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Home My WebLink AboutSUB201900058 Other 2022-04-04 (3)® COLLINS ENGINEERING July 23, 2021 To: Albemarle County and Federal Emergency Management Agency Re: FDP201900006 - Pleasant Green Floodplain Study 200 GARRETT ST, SUITE K CHARLOTTESVILLE VA 22902 434.293.3719 PH 434.293.2813 Fx Cwww.collins-engineeringxom Subject: Project Narrative for CLOMR-F for the Pleasant Green Residential Development (FDP201900006) — Re -Submittal 2 Attachments: Attachment A— Work Map Exhibits Attachment B— HEC-RAS Model Results Shapefiles (.shp), coordination system: NAD1983 State Plane Virginia South FIPS 4502 Feet: Proposed 0.2 Percent Annual Chance Flood Hazard Proposed 1 Percent Annual Chance Flood Hazard Effective 0.2 Percent Annual Chance Flood Hazard Effective 1 Percent Annual Chance Flood Hazard HEC-RAS version 4.1.0 zip files: Duplicate Effective Pre -Project (Existing) Proposed Overview: The Pleasant Green residential development, located in Crozet, Virginia just north of Jarman's Gap Road, consists of (7) development parcels and (50) existing residential lots. The total acreage of the development is 41.4 acres and proposes a total of approximately 250 units. The parcels are located along Powell's creek, between Cling Lane and Jarman's Gap Road. All the proposed residential development is located outside of the stream buffer and 100-year floodplain along Powell's Creek. The overall development of the property requires a connection (stream crossing) across Powell's Creek to Orchard Drive. A stream crossing was approved in 2018 for a road crossing that connected a portion of the property to Orchard Drive. Since this approval of the stream crossing, the subject property area has increased to include the development of the adjacent land to the east, which is now part of the 41.4 acres on the subject properties. With the additional property, a new location for the stream crossing is being proposed that reduces the overall impacts to the stream buffer, floodplain, and preserved slopes on the property. The relocation of the stream crossing required an amendment to the special use permit that was approved by the Albemarle County Board of Supervisors on September 16, 2020. The new stream crossing also requires an amendment to the approved FEMA CLOMR-F. Floodplain Narrative: This amendment to the FEMA floodplain along Powell's Creek is a revision to the recently approved Conditional Letter of Map Revision. The previous case number is 17-03-1753R, and the CLOMR-F was approved on February 1, 2018. The box culvert and fill proposed with the 2018 CLOMR-F was for a road crossing approximately 1,896 feet downstream of Cling Lane. This crossing was approved but not installed. The property that was utilizing the crossing has been added to the adjacent property downstream of this new crossing, and a new location for the stream crossing over Powell's Creek is being proposed with this development. This new stream crossing, which is a more direct crossing of Powell's Creek, reduces the floodplain and stream impacts. The new crossing is approximately 2,856 feet downstream of Cling Lane along Powell's Creek. This amendment to the CLOMR-F is proposing an approximately 500 linear -foot bridge and minor fill for the abutments. On September 16, 2020, Albemarle County approved a Special Use permit for the relocation of the stream crossing on Powell's creek for the purpose of a road connection to Orchard Drive. An updated HEC-RAS model of Powell's Creek has been completed between Cross Sections F and M for the new location of the stream crossing with the bridge span. The affected area is located on FEMA Map 51003C Panel 0229, effective date 02/04/05. The datum for the FEMA study is NAVD 1988. The approved CLOMR-F and HEC-RAS modeling from 2017 determined that the existing GIS topography along Powell's Creek in this section of the FEMA Mapping was not accurate. The approved CLOMR-F updated the modeling and topography between cross sections F and M on this portion of Powell's Creek, creating an effective model that used the FEMA-approved Hydrologic Model for peak flows and cross-section locations. The amendment to this approved modeling utilizes the similar parameters (topography, cross -sections, and hydrologic model) as the 2017 approved study. However, ultimately this study utilized the most recent LOMR model (affecting Cross Sections E and F) in addition to the survey/LiDAR data updated as of the 2017 study to complete the HEC-RAS modeling. As part of the approval of Special use permit (SP2019-00002) for the new stream crossing and bridge crossing, there must be a zero -rise in the 100-year floodplain elevation on all adjoining properties. As shown in the modeling, flood plain study, and reports, there is a zero -rise on all the adjoining properties. The floodplain is not increased on any of the adjoining properties. When comparing the Pre -Project and Proposed Models, it can be seen that the maximum difference in water surface elevation in the 100-year storm is 3.05 immediately upstream of the proposed bridge crossing. However, there is no rise in the effective cross -sections due to the installation of the bridge (i.e. the rise and tie-in's occur between and to the two bounding effective cross -sections in the LOMR model). As shown in the modeling outputs in Attachment B, the 100-year floodplain elevation with the new crossing matches the existing floodplain elevations approximately 615 feet upstream of the crossing and 60 feet downstream of the crossing. Through the modeling completed, it was found that there is a zero -rise in the Base Flood Elevation (BFE) associated with the proposed fill and bridge crossing on the adjacent properties. In addition to the Special Use Permit, the new location for the road crossing has been permitted through the USACOE. FEMA Hydraulic Analysis: The CLOMR-F study that was approved on February 1, 2018 by FEMA was initially used as the existing conditions (i.e. duplicate effective model) for this amendment with the relocation of the stream crossing. However, the effective model for LOMR Case No. 02-03-1533P effective June 23, 2021 was used instead. The entire model — Cross Sections A through N was used in the updated analysis. (The LOMR mostly impacted the culvert crossing at Jarman's Gap Road). Duplicate Effective The received LOMR model was copied and a duplicate effective model was used in HEC-RAS version 4.1.0. The model was not truncated but the work map in Attachment A Figure 1 was truncated for easier viewing of the effective and proposed floodplain boundaries. The datum was confirmed to be in feet, NAVD88. The duplicate effective steady flow analysis file was provided by FEMA and further modifications to the hydrologic parameters were not performed as part of this study. The reach boundary conditions were provided with the model, as well. The boundary conditions were "Known Water Surface Elevations", which were retained in the analysis. Existing Model The geometry of the existing model is the same as the Effective model in this case. For the Existing model, the following revisions were made: • Added Cross Sections 4330, 4292, 4248 to the model that would, along with effective cross section 4210, form the bounding cross section for the Proposed Model's Pleasant Green Phase 2 crossing. Proposed Model The revised model used the Existing Model as a base. The only difference between the Existing and Proposed model is the addition of a bridge at River Station 4270. This bridge spans the left and right overbank of Powells Creek tying in at the proposed elevations of the site development. The certified bridge design is contained in Attachment A Figure 2. The hydraulic opening of the model is slightly smaller than that of the designed bridge to conservative. The proposed bridge was modeled as a rectangular opening. However, the designed bridge will be more irregular. The bounding river stations were adjusted to be at the appropriate distance to the proposed bridge per HEC-RAS guidance. Attachment A Figure 1 shows the revised conditions model parameters overlaid on the aerial work map. Attachment A Figure 2 is the certified design of the bridge structure. Results: Attachment A Figure 1 and Figure 3 show the model results overlaid on aerial imagery and on the FEMA FIRM, respectively. Each map shows the 100-year (base flood), 0.2-percent chance annual flood and the floodway (encroached). The proposed development and location of the crossing is shown overlaid with the results. In Figure 1, the existing and proposed contours are shown for reference. Attachment B provides the HEC-RAS output for the Duplicate Effective, Pre -Project (Existing) and Proposed models including summary tables, profiles and section views. The profile, summary tables and cross sections of the floodway results (encroached and unencroached) are also included in Appendix B following the Existing and Revised Model results. The tie-in's are shown at the upstream and downstream ends of the subject area. The bounding cross - sections are 4885 and 4210. The tie-ins when comparing the Proposed and Pre -Project models is less than 0.1 feet as seen in the model results in Attachment B. When comparing the water surface elevations between the Pre -Project and Proposed, there is no rise found due to the proposed bridge crossing. Conclusions: • This floodplain study is an amendment to the previously approved 2018 FEMA floodplain study. The stream crossing, which has been relocated downstream approximately 960 feet, has essentially the same effect on the floodplain along this portion of Powell's Creek as the previously sited crossing location. • When comparing the Pre -Project and Proposed Models, it can be seen that the maximum difference in water surface elevation in the 100-year storm is 3.05 immediately upstream of the proposed bridge crossing. The 100-year floodplain elevation with the new crossing matches the existing floodplain elevations approximately 615 feet upstream of the crossing and 60 feet downstream of the crossing. There is no rise in the effective cross -sections due to the installation of the bridge (i.e. the rise and tie-in's occur between and to the two (2) bounding effective cross -sections in the LOMR model). • Through the modeling completed, it was found that there is a zero -rise in the BFE associated with the proposed abutment fill and bridge crossing on the adjacent properties. ATTACHMENT A —Work Map Exhibits Contents: 1. Figure 1— Work Map 2. Figure 2 — Bridge Plan & Profile 3. Figure 3 —Annotated FIRM N Legend Proposed FloodwayO Proposed 2 PCT Annual Chance Flood Hazard * ' Proposed 1 PCT Annual Chance Flood Hazard `t Effective 0.2PCT Annual Chance Flood Hazard Effective 1 PCT Annual Chance Flood Hazard Effective Floodway ' Base Flood Elevations Effective Cross Sections I ` Additional Cross Sections LOMR Case No. 20-03-1533P Limits Powells Creek Proposed Development _ Proposed Contours (10 ft) Proposed Contours (1 ft) - Existing Contours (5 ft) Existing Contours (1 ft) The surveyed contours shown were mosaicked and combined with the best avialable LiDAR from VGIN for areas not captured in the survey 1 All elevations are in feet NAVD88. v, PROPOSED BRIDGE CROSSING k RIVER STATION 4149 0 i 0 175 350 Feet dip !r ---:" 1 11 /0 SHREWS W1 WON R. a�� A✓1 k,� I, 1 0 n 61 S I E Kimley»)Horn Expect More. Experience BeMer. IAN KALIAKIN Lic. No. 060735 09�'051?. r.'grONAL eNG • Q) Li O 1 LOMR CASE NO. 20-03-1533P -' - _, LIMITS OF ANALYSIS _ __--------- r i'i' ,1'' d,,`,''�,�i' i i Oi �`` �` ` \ 334 1110 TA`.3284 �r \ STREAM 11 l„_1=====_, .'___: ',, •' I'i'� i i •I r`, ,'. _',__ 1`.1 `,� -Maxar: .,Ea eog�aphics„ONES%Airbus`DS �U$DA�FISG$' eroGRID, rGN; and th GIS User Community E to N Y Y Y o o o N} CM Z Z Y Q (D w Z U) a Q �,�„ � teaN/ L.I_ 2 FIGURE 1 1\ 4 / / / / / / - / - / _ / �/ / /I T RAMBLING BROOK LANE CENTER LINE DATA: - - - / / / / / / \ \ CAMPBELL, DOOfYR / � / / / VUE REALTY PARTNERS LLC / M �CHLINE / \ \ & MA i i'/ / / / / /// //' / / TMP o5600-00-00-11500 C — —'S E SHEET / //// / / RESIDUE LAND FI OM Tangent Data / \ \ \ N / / / / / \ TMP o o-o-orl-er o / T / / / 21.854 ac. — _ / / I PLEASANT GREEN PHASE I SUBDIVISION \ \ Description PT Station No Eases \ \ 5� / / / / ' / / / / \ Northing g \ \ \ 0.39 aC. / / / / / // /j / // / / DB 4856, PG 582 / / / TO BE COMBINED WITH Start: 10+00-000 3913311-780 11422959-805 / \ f / / —PROPOSED 20' WIDE GREEN AY End: 11+55-387 3911 4111704 11423078-803// — EXISTING STREAM (TYP. / TRAIL &EASEMENT. Tangent i / TMP o56Ai-oi� 0-02600 FUTURE PLEASANT GREEN PHASE II Parameter Value Parameter Value \v \V A l/ Length: 155387 Course: N 490 58' 45-5333" E /'� Curve Point Data / / / /� / i A) l \ \ A A A Description Station Northing Eastla6 / / / l l ) ( \ \ \ JORDAN, ROSE M \ / / / / / / / / — / 0 GRADING PROPOSED WITH PLEASANT ( \ PC: 11+55.387 3913411.704 11423078.803 TMP oSSCo-oo-oA-oo400 / / / / / / / O O O O O O O \ \ \ / 0 / GREEN PHASE I FINAL SITE PLAN RP: 3914560-422 11422114.206 o.52o ac. / SIv1 C) IAr�LP ILL LLC / OO — / \ \ PCC: 13+70.121 3913561.071 11423232.821 DB 4037, PG 681 / TMP 65SC� b-oq%oA1 / Oo \ _ — /' \ / / _ Circular Curve Data \ / / / 1344 OOO D6�12 Ir 67/ / / Parameter Value Parameter Value \ 1 / / / / / OO \ \ // / 0/ I /� EXISTING too' STREAM BUFFER (TYP.) Delta: 080 12' 08.0848" Type: LEFT _ — N\ TMP 55C-03-Ai PROPERTY LIMITS lu� EXISTING 3.00-YEAR FLOODPLAIN PER HEC-RAS ANALYSIS I Radius: 1500.000 — \ COINCIDES WITH PROPOSED PERFORMED BY COLLINS ENGINEERING IN APRIL 2019 (TYP. PROPOSEDWARIABLE Length: 214.734 Tangent: 107.551 \ -A\ / x \ y VARIABLE/ WIDTH GREENWAY ESMT. / / 0 WIDTHGREtNWAY& b / I I O TRAIL EASEMENT Mid -Ord: 3.841 External: 3.851 \ I PROPOSED too -YEAR FLOODPLAIN PER HEC-RAS ANALYSIS _ _ ❑ v, I / / / / b O END RAMBLING BROOK LANE ROAD\ Chord: 214.551 Course: N450 5T 41.4909" E a\ I PERFORMED BY COLLINS ENGINEERING IN APRIL 2019 (TYP.) / \ y PkoPds�D WIDE yo,ncRErEIISIDewALKrono I OO CONSTRUCTION AT INTERSECTION WITH \ a \ Z\ } I EI(�SAL EDALaay}},��NGORCFIARDDRIVE O°PROPOSEDt — I I ALSTONSTREETROUNDABOUTPROPOSED Curve Point Data \ EXISTING FIRE HYDRANT TO RHINTXISTIJGPUBLICRW.g'WIDE /Oo VDOTSTD.EC-1,CLASSIRIPRAPWITHA I / i Co c. SID 4WAL rocON 1yECTINTO /� TYPE B INSTALLATION TO BE INSTALLED BETWEE I O WITH PLEASANT GREEN PHASE I FINAL /f Description Station North' Eastin REMAIN UNDISTURBED N 1 / P Ong g O @RO\POSERBID MULTI -US SIDEWALK.I THE PROPOSED WING WALLS FOR INLET PROTECTION— SITE PLAN. STA.15+10, ELEV.7o6.23 PCC: 13+70.121 3913561-071 11423232-821 \ \\ \ \\ \ \ \\ PROPO -ED VDOT STD. 45 WING WALLS & FOUNDATIONS WITH A o SKEW. \ RP: 3913561 071 11423232 821 o PROPOSED PUBLIC VDOT RIGHT-OF-WAY \ \ \ \ \ \\ O I t I \ CONNECT TO SIDEWALK PROPOSED WITH / PT: 14+65.165 3913635J67 11423291.488 PROPOSED CONTECH PRECAST O-SERIES PLEASANT GREEN PHASE I FINAL SITE PLAN \ \ \ PROPOSED 8' MULTI -USE . CONNECT TO CG 6 CURB & GUTTER Circular Curve Data \ \ CONSPAN STIR. 0843, WITH WING WALLS Oo \ \ CONCRETE SIDEWALK \ \ � WITH PLEASANT GREEN PHASE I Fit Parameter Value Parameter Value / SEE UTILITY NOTE ON THIS SHEET \ \ \ \ \ \ \ �o I o Oo o940 PROPOSED 6' Delta- 070 15' 38-9702" LEFT � � "° \ \ \ \ \ \ eo CcPROPOSED VDOT STD. I ° PLANTING STRIPS Type: LOUNSBURY, KEVIN G Oo yy Radius: 750.000 / OR ANN A CONTRACTOR SHALL MILL & \ PROPOSED \ \ \ CG-6 CURB & GUTTER Oo Oo 1 6U20o Oo Oo Oo Oo OO o 0 OVERLAY ORCHARD DRIVE TO STOP SIGN —�700 Length: 95-044 Tangent: 47-586 TMP oSSCo-oo-oA-oozoo THE CENTERLINE WHERE PVMT. \ \ \ PROPOSED SPEED 1 I 0.56o ac. IS TO BE WIDEN. 70o PROPOSED'NO— LIMIT SIGN +o Mid -Ord: 1-505 External: 1-508 DB 989, PG 389 I — C12 PARKING' SIGN 0 11F, ✓/ Chord: 94.980 Course: N 380 08' 47.9633" E \ -- +5 PROPOSED STOP\BAR � ---•- - ^ -. .,.. C$ � F r'. 14 Tangent Data PROPOSED VDOT STD. r. +oo 10+ o Description Pr Station Northing Easting CG iiENTRANCE I 5 11+00 w ° 11+ 12+00 1 +So C 3+00 3 UBLIC k �'- 15oo'R J PROPOSED 55 Start: 14+65.165 3913635-767 11423291.488 / �° LL w ` BEGIN RAMBLING BROOK LANE CONSTRUCTIOr1� // 'q P - - n " C11 RAM ING B OO LANE C1 End: 15+79.077 3913729.626 11423356.035 PROPOSED VDOT STD. AT INTERSECTION WITH EXISTING ORCHARD Tangent Data DRIVE. STA. 10+10, ELEV. 705.33 7�4 .' A • . . , _ C9 CG-6\ B & GUTTER m� ` Parameter Value Parameter Value Length: 113-912 Course: N34030' 58-4782" E SEE UTILITY NOTE ON THIS SHEET ° 9 PROPOSED 6' C10 C6 700 PLANTING STRIP_ LUDWIG, DALE & CHRIS ANNE � / i PROPOSEO'NO TMP 055Co-oo-oA-oo3.00 702 / / PARKING' SIGN C5 ` PROPOSED YIELD SIG1' / Cl 694 PROPOSED 8' MULTI -USE' CULVERT NOTE: o.600ac. Oo CONCRETE SIDEWALK \ DB 1 z PG 60 / � � — / � / / / PROPOSED SPEED Oo 0O o0 00 /O Oo 0O Oo 0o Oo 00 0O Oo 00 �00 @ 3 0O Oo 00 0o a � v THE VDOT MINIMUM STANDARDS HAVE BEEN 5 3 ' 7 / / / / LIMITSIGN FOLLOWED FOR THE PROPOSED BOX CULVERT DESIGN SEE UTILITY NOTE ON THIS SHE ET / / PROPOSED STREET SIGN 9 r° / ° \ i I s ROPOSED VDOT STD. 45 WING WALLS & FOUNDATIONS WITH A o SKEW. i / l PROPOSED PUBLIC DRAINAGE r i 1 r THOUGH THE BOX CULVERT WILL BE PRECAST. III \ PROPOSED CG-22(TYP./ /CESMI. 10TIE INTO PROPOSED o \ �x )Q PUBLIC VDOT R/W PROPOSED VDOT STD. EW-i BELOW STIR. C13. PROPOSED PUBLIC OTRIGHT-OF-O PROPOSED 3' UTILITY STRIP / / / /� O/ PROPOSED VDOT STD. EC-1, CLASS 1 RIPRAP/ \ / \ THE HOUSING LAB LLC \ \ / / � / WITH A TYPE B INSTALLATION TO SERVE AS / � �, rJ / o \ \ TMP o5500-00-0o-o68Do \\ � / � _ / / / 0 OUTLET PROTECTION (L=6o', W=6o', D=2') // � � / � \ \ r o.67oac. \ // Q��vv ' 0 /� \ DB 5079, PG 303 ✓ / cj / / / / Oo STORM SEWER PROPOSED WITH \ \\ PLEASANT GREEN - PHASE I FINAL SITE PLAN \ / /XISTING ioo' STREAM BUFFER (TYP. PRO SE RIA \ \ f / yy / / / l I / 1 GRAPHIC SC �4Y E / o \ \ EXI¢gTING FIRE HYDRANTTO / / ROPOSED 5' CONCRETE SIDEWALK / / / / // \ _BIO-FILTER PROPOSED WITH PLEASANT \ I / / /� / o GREEN - PHASE I FINAL SITE PLAN / \\ / \ / ¢0 I / 0 EMAIN UNDISTURBED _ 20 40 // 160 PROPOSED 5' CONCRETE SIDEWALK SHALL TAPER TO EDGE OF EXISTING PAVEMENT i 1N /) — ` \ / \ (OD f 1 inc - -40 \TO PRESERVE EXISTING \ OPE AT LOCATION OF EXISTING CULVERT CROSSING. THE HOUSING LAB LLC A \ / / V A \\A TMP055OO-oo-oo-o68Co / / / / \\ \ 0.53o ac. \ \ \1 \� DB 5o7g, PG 303 TMP 55C-03-Ai PROPERTY LIMITS \ / 1 COINCIDES WITH PROPOSED \ NOTE: ALL ROADWAY EMBANKMENT MATERIAL SHALL CONSIST \ _ / VARIABLE WIDTH GREENWAY ESMPVI STA: iS+oo.00 T. OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT PVI ELEV:7o6.22 715 K:215.32 715 MORE THAN 8 INCHES IN THICKNESS BEFORE COMPACTION OVER �ROPOSED 3' I ILIYSTRIP\ / \ ROPOSED 5'CONCRETE SIDEWALK \ SANITARY SEWER PROPOSED WITH \ PLEASANT GREEN - PHASE I FINAL SITE PLAN / HALLOCK, SYLVIA M & \ / ROSAJIMENEZ-VAZQUEZ TMP oSSoo-oo-Oo-o68Bo \ \ o \ \ \ \ \ \ \ \\ I I I \\ \\ \ DB 4321, PG 364 • ti `{9 Dui 9A9 \ \ \ \ \ \ \ I \ p PROPOSED CONNECTION TO EXISTING \ \ \ \ \ \ \ \ \ \ \ / / / 5' SIDEWALK ALONG JARMANS GAP ROAD \S,M CH A TE§VILL E\ \ \ \ \ \ TMP o RO-00-00-007 0 \ \ \ \ \ l 3.1qQoac. 5112�PG348\ PVI TA: 2+47.50 0.00 PVI ELE : 700.58 O N tD O K: 8 .70 0 o LVC:3 0.00 + 0 N D o 710 ° o O a 6i LU U 710 LOW PT. STA:1z+37 90 LOW PT EL r + n 702,43 + n m m w .oi Lii N LU m w 2.c0% m PROPOSED GRADE (TYP.) LU % 705 _�L_2.OnV. 1.1 705 PROPOSED TIE -INTO ALSTON STREET 700 VDOT STD. CD-1 ROUNDABOUT, PROPOSED 700 PROPOSED WITH PLEASANT GREEN TIE-IN TO EXISTING ORCHARD STA.1o+10, ELEV.=7o5.33 DRIVE VDOT STD. CD-2 v PHASE I FINAL SITE PLAN STA. 15+07, ELEV.=7o6.35 \ FI L P.) 695 (T 695 RAMBLING BR DOK LANE C/L EXISTING ORC ARD DRIVE E S I AMBLING BRCOK LANE C/L S A i5+79 A D R. a ALSTON A 16+42 STREET C/L S \ 690 BOTTOM PROPOSED CONSP N DESIGN TO 690 SPAN=43.0' INCLUDE A 43' SPA x 8'- 9 j' RISE, EXISTING GRADE (TYP.) ANDAN OPEN ARE =283 sf 685 STREAM BED 685 M Ln M n U? ri M N Ln M 00 tD Ln Ln O lD Oh M N 00 Ln 'i It N S '? lD H lD I� Cn In rl M N N O to N Lfh I� N I� N Ln O Ln n O o 00 O Oh M O O 0) N 0) O 00 N Dh O 00 N o O 0) N N O ah M M O 0) 't .t o Oh Ln L!h O Oh tD p O^ 1� r, n n tD n to n tD I" LD n tD I" tD to r. lD r, THE ENTIRE ROADBED AREA IN ACCORDANCE WITH VDOT zoo? ROAD AND BRIDGE SPECIFICATION 303.04 NOTE: CLASS I BACKFILL MATERIAL SHALL BE CRUSHER RUN AGGREGATE SIZE NO. 25 OR 26, AGGREGATE BASE MATERIAL SIZE 21A OR 21B, FLOWABLE FILL, OR CRUSHED GLASS CONFORMING TO THE SIZE REQUIREMENTS FOR CRUSHER RUN AGGREGATE SIZE 25 AND 26, PER VDOT ROAD AND BRIDGE SPECIFICATIONS, SECTION 302.03G. NOTES: 1. ALL FILL TO BE PLACED AT 95%COMPACTION. 2. MINIMUM 3.5' OF COVER MUST BE MAINTAINED OVER W/L. 3. MINIMUM OF i' OF VERTICAL SEPARATION FROM STORM SEWER & W/L AND i.5' OF SEPARATION BETWEEN W/L & SANITARY SEWER MUST BE PROVIDED. VDOT WILL ONLY MAINTAIN WITHIN DRAINAGE EASEMENTS TO THE EXTENT NECESSARY TO PROTECT THE ROADWAY FROM FLOODING OR DAMAGE. VERTICAL GRAPHIC SCALE 5 0 2.5 5 10 ( IN FEET ) 1 inch = 5 ft. HORIZONTAL GRAPHIC SCALE 50 0 25 50 100 IN FEET ) 1 inch - 50 ft. 20 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 16+oo UTILITY NOTE: RAMBLING BROOK LANE DESIGN SPEED: 25MPH THE FIVE VACANT WATER METERS ALONG ORCHARD DRIVE SERVING TMP / PAVEMENT MARKINGS NOTE: ALL SIGNING & PAVEMENT MARKINGS / — / / POSTED SPEED: 25 MPH 0SSCo-03-oo-000A1, AS SHOWN ON THIS SHEET, SHALL BE ABANDONED IN ACCORDANCE SHALL BE INSTALLED CONSISTENT WITH THE MUTCD STANDARDS. — — / / WITH MINIMUM ACSA STANDARDS, TYPICAL. / No. 35791 3/26/21 Ln z w O U) dS z In Ln W W W z wO O o N N o0 0 a a o z z Z w w z Ln Ln Z g LU 0 0 / LU N N N z ti M � ® M C N WIN M O N LU W N oc J N O 11 W < U w e$ L z 06 z z U) O Q LU U OIL L9 o I LU z z Q O J U (n � �) O Y LLI > Q� C) '�mrr�tt V W V Z Ul Z ED z � w LU J� Q z O 0 O N LU U _j U F w Lu 0 W CL U) JOB NO. 112066 SCALE AS SHOWN SHEET NO. 1 OF i NOTES TO USERS This map is for use in administering the National Flood Insurance Program. It drainage sources of does not necessarily identify all areas subject to flooding, particularly from lo small cal consul ed for p ssib epdated or addit additional floodhazed iinnformationhould be To obtain more detailed information in areas where Base Flood Elevations (BFEs)and/or flootlways have been determined, users are encouraged to consult the Flood Profiles, Floodway Data and/or Summary of Stillwater Elevations tables contained within the Flood Insurance Study (FIS) report that accompanies this FIRM. Users should be aware that BFEs shown on the FIRM represent rounded whale -foot olevetlons. These BFEs are intended for flood insurance rating purposes only and should not be used as the sole source of elevation information. Accordingly, flood flood elevation data presented in the FIS construction and/or floodp report should be utilized in conjunction with the FIRM for purposes of lain management. Coastal Base Flood Elevations shown on this map apply only landward 0.0' North American FIRM be aware th Vertical Datum of 1988 (NAVD 88). Users of this Summary mary Of Stillwater Elevre also povidein te ationstables In the Flood at coaal flod elevationsaInsurancer Study repohrt for this jurisdiction. Elevations shown in the Summary of Stillwater Elevations tables should be used for construction and/or floodplain management purposes When they are higher than the elevations shown on this FIRM. Boundaries of the floodmays were computed at cross sections and interpolated between cross sections. The floodweys were based on hydraulic considerations with regard to requirements of the National Flood Ins uranr ce Program, Floodway widths and other pertinent floodway data are provided Study report for this jurisdiction. the Flood Insurance Certa s not in control 'astructures Special Refer t000d Section Hazard2.4 "Flo daProtectionbe a flood Measures sof the Flood Insurance in this jurisdiction. Study report for information on flood control structures The projection used in the preparation of this map was Universal Transverse Mercator(UTM) Zone 17. The horizontal datum was NAD 83, GRS80 spheroid. Differences in datum, spheroid, projection or UTM zones used in the production of FIRMS for adjacent jurisdictions may result in slight positional differences in map features across jurisdiction boundaries do not affect the accuracy of this FIRM. , These differences Flood elevations on this map are referenced to the North American Vertical Datum of 1988. These flood elevations must be compared to structure and ground elevations efefenced to the same vertical datum. For information regarding conversion between the National Geodetic Vertical Datum of 1929 and the North American Vsrtical Datum of 198e, visit the National Geodetic Survey website at http://www,ngs.noaa.gov or contact the National Geodetic Survey at the following address: Spatial Reference System Division National Geodetic Survey, NOAA Silver Spring Metro Center 1315 East-West Highway Silver Spring, Maryland 20910 (301)713-3191 To obtain current elevation, description, and/or location information for bench marks shown on this map, Please contact the Information Services Branch of the National Geodetic Survey at (301) 713.3242, or visit their website at htip://www.ng$.nQaa.go,. Base map information shown on this FIRM was provided in digital format by Albemarle County Department of Planning A, Community Development. This inf0imston was photogrammetrically compiled at a scal Photography dated March 2000. e of 1:4.800 from aerial This map reflects more detailed and up-to-date stream channel configurations than those shown on the previous FIRM for this jurisdiction. The floodplain, and floodways that were transferred from the previous FIRM may have been adjusted to conform to these new stream channel configurations. As a oodwaV Data the Flood Profiles dittables eRood nReport (which ontanauorative by ullic data) may reflect channel distances that differ from what is shown on this map. Corporate limits shown on this map are based on the best data available at the time of publication. Because changes due to annexations or de -annexations may have occurred after this map was published, map users should contact appropriate community officials to verify current corporate limit locations. Please refer to the separately printed Nap Index for an overview map of the county shoving the layout of map panels: community map repository addresses; and a Listing of Communities table containing National Flood Insurance Program dates for each community as well as a listing of the panels on which each community is located. Contact the FEMA map service Center at 1-800358-9616 for information on available products associated with this FIRM. Available products may include Previously issued Letters of Map Change, a Flood Insurance Study report, and/or digital versions of this map. The FEMA Map Service Center may also be reached by Fax at 1-800-258�9620 and their website at http://www,msc.fema.gov. If you have questions about this map or questions concerning the National Flood Insurance Program in general, please call 1-877-FEMA or visit the FEMA website at http://www.fome.gov. MAP (1-877-336r2627) 38-C 39 391 38"1 78-41'15" LEGEND --- SPEC(AL FLOOD HAZARD AREASno (SFHAs) SUBJECT TO INUNDATION BY THE 1 % ANNUAL CHANCE FLOOD 3T.5" The t IoodhH% annual chance flood - year flood), also known as the base flood, is the aued azardl Ares, the are of ea rsubject fleetualed or er exceeded in any given year, The Special of 5pecial Flood Hazard Include Zones A, flooding gfiy the 1% annual chance flood. Areas Flood Eleva60n is the waterudace elevation of the 1% annul rhancedtlood. VE The ease ZONE A No Base Flood Elevations determined. ZONE AE Base Flood Elevations determined. ZONE AH Flood depths of 1 to 3 Elevations determined. feet (usually areas of pending); Base Flood i ZONE Ao Flood depths Of 1 to 3 feet (usually sheet flow on sloping tcrra)n); average depths determined, For areas of alluvial fan flooding, velocities also determined. ZONE AR Spacial Flood Hazard te Area formerly protected from the 1% annual chance Flood by a flood control system that was subsequently decertified. Zone AR indicates that the former flood being restored to provider control system is protection from the 1 % annual chance or greater flood, ZONE A99 Area to be protected from 1 % annual chance flood by a Federal flood protection system under construction; no Base Flood Elevations determined. ZONE V Coastal flood zone with velocity hazard (wave action); no Base Flood Elevations determined, ZONE VE Coastal Rood zone with velocity hazard determined. ve (waactun); Base Food Elevations FLOODWAY AREAS IN 70NE AE The Floodway Is the channel Of a stream {p lus any ar))'acent floodplain areas that must be kept free of snoroachmem SO that the 14annual chance flood can 6e carried without substantial increases in flood heights. OTHER FLOOD AREAS ZONE x Areas of 0.2% annual chance feed; areas of 1% with average depths of less than f foot or with draannual chance flood 1 square mile; and ainage areas ass than areas Protected by levees from 1 % annual chance flood. OTHER AREAS ZONE X Areas determined to be outside the 0.2% annual chance floodplain. ZONE D Areas in which flood hazards are undetermined, but possible. COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS F7\ OTHERWISE PROTECTED AREAS (OPAs) CBRS areas and OPAs are normally locat,d within or ad)aoem to Special Flood Hazard Areas. floodplain boundary Floodway boundary Zone D boundary "' CBRS and OPA boundary Boundary dividing Special Flood Hazard Area Zones and boundary dividing Special Flood Hazard Areas of different Base Flood Elevations, flood depths or Rood veloddas. Bare Flood Elevation line and value; elevation in feet' (EL 987) Base Flood Elevation value where uniform within zone; elevation in feet* 'Referenced to the North American Vertical Datum of 1988 A A Cross section line 23 - - - - _ 23 Transact line sr-07'30", 32.22'30" Geographic Coordinates referenced to the North American Danrm of 1983 (NAD 83), Western Hemisphere 4278000N 1000-mem" Universal Transverse Mercator grid values, zone 17 600000 FT Socl ggrrid ticks: Virginia State Plane Coordinate system. seat, zone (FIPSZONE 4502), Lambert Conformal Conic projection DX5b10 X Bench mark (see explanation in Notes to Users section of Mies FIRM pane, m MILE River Mile a MAP REPOSITORY Referto listing of Map Repositories on Map Index EFFECTIVE DATE OF COUNTYWIDE FLOOD INSURANCE RATE MAP February 4, 2005 EFFECTIVE DATEM OF REVISION(S)TO THIS PANEL For community map revision history Prior to countywide mapping refer to the Community MaP History table located in the Flood Insurance study report for this jurisdiction. To determine if flood insurance is available in this community, contact your insurance agent or call the National Flood Insurance Program at 1_800-638-G6z0 nc �J MAP SCALE 1• 500, 250 0 S00 000 FEET 150 0 1S0_ 300 METERS PANEL 0229D FIRM FLOOD INSURANCE RATE MAP ALBEMARLE COUNTY, VIRGINIA AND INCORPORATED AREAS AND THE INDEPENDENT CITY OF CHARLOTTESVILLE PANEL 229 OF 575 (SEE MAP INDEX FOR FIRM PANEL LAYOUT) ONTAINS COMMUNITY NUMBER P N L SUFFIX ALBEMARLE COUNTY 51000a 0229 p Notx:a to Usm: The axis Naabxr shown below should be used when placing map orders: the Community Number shown above should be used commwhou on insurance appicetiana forth, subleat et^ MAP NUMBER 0 51003CO2290 EFFECTIVE DATE FEBRUARY 4, 2005 Federal Emergency Management Agency Kimley»)Horn Expect More. Experience Better. �� IAN KALIAKIN Lic. No. 060735 0i�,05/az/ ONAL V i D O O `v �JU Q V/ v O 4-0 U O ca (D n Li (n _I Vi lV E O W a 5� Ii LL Y Y Y 0 z Z W 2 U U) w W �Q/ I..I_ 0 0 U FIGURE 3 0 O C'7 r r O Z a ATTACHMENT B — HEC-RAS Results Contents: 1. Existing Profile Plot 2. Proposed Profile Plot 3. Existing Cross Sections 4. Proposed Cross Sections 5. Existing Tabular Results 6. Proposed Tabular Results 7. Floodway Profile Plot 8. Floodway Summary Table 9. Floodway Cross Sections Existing Profile Plot c Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 0 2000 4000 6000 8000 Main Channel Distance (ft) Legend EG 100-YEAR WS 100-YEAR Crit 100-YEAR Ground Proposed Profile Plot Powells Creek Proposed Plan: Proposed 9/10/2021 -------------------------------- Ground 6001 Main Channel Distance (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Existing Cross Sections Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 07 r .07 s10 o s Legend 805 EG 100-YEAR WS 100-YEAR 800 Crit 100-YEAR a Ground 795 > Ban•k Sta m w 790 785 780 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 07 '1 i.07 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Ground c • o Bank Sta 785 w 780 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 07 i .07 800 6 Legend 795 EG 1 00-YEAR WS 100-YEAR 790 Crit 100-YEAR `o Ground 785 • > Ineff m w 780 � Bank Sta 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Railroad Ave. - Route 788 07 .07 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Cdt 100-YEAR `o Ground g 785 • > Ineff m w 780 Ban*k Sta 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Railroad Ave. - Route 788 � J 1 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Crit 100-YEAR o Ground 785 • > Ineff m w 780 Banek Sta 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 J .1 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Cdt 100-YEAR o Ground 785 • > Ineff m w � 780 Bank Sta 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 J � 1 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Ground c � o Bank Sta 785 a>> w 780 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 J 1 .1 800 6 6 Legend 795 EG 100-YEAR WS 100-YEAR 790 Cdt 100-YEAR o Ground g 785 • > Ineff m w � 780 Bank Sta 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 CSX Rai" ip Legend ---------------------------- EG 100-YEAR WS 100-YEAR Crit 100-YEAR Ground ! Ineff Bank Sta 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 CSX Railway .075 ip 0 m w Station (ft) 1 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground Ineff • Bank Sta T Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 790 Legend ---------------------------- EG 100-YEAR 785 WS 100-YEAR Crit 100-YEAR 780 `o Ground > Ineff w 775 • Bank Sta 770 765 1700 1800 1900 2000 2100 2200 2300 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 L 1 do r 790 6 Legend ---------------------------- EG 100-YEAR 785 WS 100-YEAR Crit 100-YEAR 780 `o Ground - > Ban•k Sta y 775 770 76s 1700 1800 1900 2000 2100 2200 2300 Station (R) ip 1700 c 0 .Ei m w Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1)OLr 1 6 1800 1900 2000 2100 Station (ft) Legend ---------------------------- EG 100-YEAR WS 100-YEAR ....______. I_______ Crit 100-YEAR Ground • Bank Sta 2400 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta 2200 2300 2400 2500 ip 0 .Ei m w ip 0 .Ei m w Powells Creek Pre -Project -EX 1700 1800 1900 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 2000 2100 2200 2300 Station (ft) Plan: POWELLS REVISED MULTIPLE NATURAL RUN Cling Lane - Route 1226 2400 7/22/2021 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Crit 100-YEAR Ground ! Ineff Bank Sta 2500 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground Ineff • Bank Sta 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) ip 0 .Ei m w ip 0 .Ei m w Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Cling Lane - Route 1226 Legend ---------------------------- EG 100-YEAR ................................... Cdt 100-YEAR WS 100-YEAR Ground ! Ineff Bank Sta 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 J 1900 2000 2100 2200 2300 2400 Station (if) Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground Ineff • Bank Ste 2500 ip 0 .Ei m w 1800 ip 0 .Ei m w Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1900 2000 2100 2200 2300 2400 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 s 1800 1900 2000 2100 2200 Station (R) Legend ---------------------------- EG 100-YEAR WS 100-YEAR ....______. I_______ Crit 100-YEAR Ground • Bank Sta 2500 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground • Bank Sta 2300 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 .1 'I 760 O 6 Legend 755 EG 100-YEAR WS 100-YEAR 750 Crit 100-YEAR a Ground 745 > Ban•k Ste m w 740 735 730 1600 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 J L 1 r 750 0 6 Legend 745 EG 100-YEAR WS 100-YEAR 740 Cdt 100-YEAR `o Ground 735 • > Bank Sta m w 730 725 720 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 r 745 U 6 Legend 740 EG 100-YEAR 735 WS 100-YEAR ....______. I_______ Crit 100-YEAR c 730 oGround 725 • > Bank Sta m w 720 715 ------------------------------ 710 705 1600 1700 1800 1900 2000 2100 2200 2300 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 _I 1 .1 730 0 6 Legend 725 EG 100-YEAR WS 100-YEAR 720 Crit 100-YEAR `o Ground 715 > Ban•k Sta m w 710 705 700 1700 1800 1900 2000 2100 2200 Station (fl) c 0 .Ei m W 1500 c 0 .Ei m w Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 .1 '1 . i 1600 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 .1 )1. i( .1 6 1600 1700 1800 1900 2000 2100 Station (ft) Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta 2200 2300 c 0 .Ei m W c 0 .Ei m w Powells Creek Pre -Project -EX 1 1500 1600 1700 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta 1800 1900 2000 2100 2200 2300 Station (ft) Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Legend ---------------------------- EG 100-YEAR WS 100-YEAR ....______.}_______ Cdt 100-YEAR Ground • Bank Sta 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 07 �. 700 0 6 Legend 695 EG 100-YEAR WS 100-YEAR 690 Crit 100-YEAR a Ground 685 > Ban•k Sta m w 680 675 670 1600 1700 1800 1900 2000 2100 2200 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 11O"I 710 Legend ---------------------------- EG 100-YEAR 700 WS 100-YEAR Ground 690 • `o Bank Sta .Ei w 680 670 660 1400 1600 1800 2000 2200 2400 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 r .1 '1 i.07 710 U 6 Legend ---------------------------- EG 100-YEAR 700 WS 100-YEAR Crit 100-YEAR 690 a _ Ground ! > Ineff w 680 • Bank Sta 670 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Jarmins Gap Road - Route 691 r .1 '1 i.07 710 U 6 Legend ---------------------------- EG 100-YEAR 700 WS 100-YEAR Crit 100-YEAR 690 `o Ground Ei Ineff w 680 • Bank Sta 670 660 1400 1600 1800 2000 2200 2400 Station (R) F 1400 c 0 m w Powells Creek Pre -Project -EX 1600 Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Jarmins Gap Road - Route 691 1800 2000 2200 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 REVISED CROSS SECTION 1600 1800 2000 2200 Station (ft) Legend ---------------------------- EG 100-YEAR WS 100-YEAR ....______. I_______ Crit 100-YEAR Ground • Bank Ste 2400 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground • Bank Sta 2400 c 1400 c w Powells Creek Pre -Project -EX 1600 Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 NEW SURVEY CROSS SECTION _L .06 )i.1� 1800 2000 2200 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 REVISED CROSS SECTION .07 )it .06)i( .1 1600 1800 2000 2200 Station (R) Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta 2400 Legend ---------------------------- EG 100-YEAR WS 100-YEAR Ground • Bank Sta 2400 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 NEW SURVEY CROSS SECTION i4 .07 _i(.06 �.1 690 Legend 685 ---------------------------- EG 100-YEAR WS 100-YEAR 680 ...______y._______ Crit 100-YEAR 0 675 Ground 670 Bank Sta ------------------ 665 660 655 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 REVISED CROSS SECTION L .07 _�_ .06)i4 .1 685� Legend 680 EG 100-YEAR WS 100-YEAR 675 Crit 100-YEAR `o Ground 670 • > Bank Sta m w 665 660 655 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 REVISED CROSS SECTION .07 _�'.06) i4 .1 685 Legend 680 EG 100-YEAR WS 100-YEAR 675 Ground c • o Bank Sta 670 w 665 ------------------ 660 655 1400 1600 1800 2000 2200 2400 Station (fl) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 1 675 0� 6 Legend 670 EG 100-YEAR WS 100-YEAR 665 Cdt 100-YEAR o Ground 660 > Ban•k Sta m w 655 650 645 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (1t) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1-1 1 L r .07 665 6 6 Legend ---------------------------- EG 100-YEAR 660 WS 100-YEAR ....______. I_______ Crit 100-YEAR 655 `o Ground — > Ban•k Sta w 650 645 640 1600 1800 2000 2200 2400 2600 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 .07 655 6 Legend ---------------------------- EG 100-YEAR 650 WS 100-YEAR Crit 100-YEAR 645 a Ground — > Ban•k Sta w 640 635 630 1900 2000 2100 2200 2300 2400 2500 2600 2700 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 --11i4 .07 655 6 Legend ---------------------------- EG 100-YEAR 650 WS 100-YEAR Ground 645 • o Bank Sta w 640 635 630 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 1 � r .07 655 6 6 Legend 650 EG 100-YEAR WS 100-YEAR 645 Cdt 100-YEAR `o Ground 640 A > Ineff m w � 635 ................................................................................................................................................................ Bank Sta 630 625 1800 2000 2200 2400 2600 2800 3000 Station (ft) 1800 F 0 .Ei m w Powells Creek Pre -Project -EX 2000 2200 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Cathaross Lane Legend ---------------------------- EG 100-YEAR WS 100-YEAR Crit 100-YEAR Ground ! Ineff Bank Sta 2400 2600 2800 3000 Station (ft) Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 Cathaross Lane 1800 2000 2200 2400 2600 2800 Station (ft) Legend ---------------------------- EG 100-YEAR WS 100-YEAR Cdt 100-YEAR Ground Ineff • Bank Sta 3000 Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 .07 i( .07 660 6 6 Legend 655 EG 100-YEAR WS 100-YEAR 650 ....______.,_______ Crit 100-YEAR `0 645 Ground 640 Ineff w Ba k Sta 635 630 625 1600 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 07 �. r .07 655 6 6 Legend 650 EG 100-YEAR WS 100-YEAR 645 Crit 100-YEAR `o Ground 640 > Ban•k Sta m w 635 630 625 1600 1800 2000 2200 2400 2600 2800 Station (ft) Powells Creek Pre -Project -EX Plan: POWELLS REVISED MULTIPLE NATURAL RUN 7/22/2021 .1 _I_.06�i( .07 645 Legend 640 EG 100-YEAR WS 100-YEAR 635 Crit 100-YEAR a Ground 630 > Ban•k Sta m w 625 620 615 1700 1800 1900 2000 2100 2200 2300 2400 Station (ft) Proposed Cross Sections Powells Creek Proposed Plan: Proposed 9/10/2021 07 1( .07 a10 o Legend 6 ------------------ EG 5 D-Y 805 ws 506-YEna ---------D-------- EG 100.YEPR 800 EG 50.Y C EG 10- E O W5100.YEP12 795 1 0'0 W _..........._......-.. C�i150.VEAR 790 WS 50-y P 6i110.VEAR 785 WS 10-y n Ground Bank Sta 780 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 07 �.07 800 0 Legend 6 ...-------- "---------- EG 500-YEAR 795 WS 500-YEAR EG 100-YEAR 790 WS 100-YEAR -----------•---------- o EG 50-YEAR 785 WS 50-YEAR m W EG 10-YEAR 780 ___.+. _...._..... Crit 10-YEAR WS 10-YEAR 775 Ground • Bank St. 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 795 ---------------- 770 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 Railroad Ave. - Route 788 795 ---------------- EGW CM 100 01500 770 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Powells Creek Proposed Plan: Proposed 9/10/2021 Railroad Ave. - Route 788 1 J .1 800 0 L", 6 ----------------- EG 500.YEN3 795 ws Soo-rErx EG 100.YEN3 W5100.YEN 790 ---------------- EG 50.Y W550.YEN2 O EG 10. FOR 'W 785 w5larErx pn laYEax 780 CM 50-YEPft CM 100.YEOR CM 500.YEOR 775 i as 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 J L 1 800 0 6 -------- ` ------ EG 500.yEOR 795 ws Soo-rEax EG 100.YEN3 EN M 106-Y---------------- 790 EG 50.Y C W550.YEN3 O EG i0. EN 785 wG larErx 00 ------ cm 5oo-YEOR W-__--0. _--. 780 cnt 1oo�YEcx .... c 50-Y ..................... cM i0.YEN3 775 i 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 _I 800 o Legend 6 EG 500-YEAR 795 WS 500-YEAR 790 EG 100-YEAR WS 100-YEAR c 0 785 --------•----------- EG 54YEAR m W-- 50-YEAR W------------------------- 780 EG 10-YEAR WS 10-YEAR 775 ' Ground • Bank St, 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 J L 1 800 0 L", 6 -------- - ------ EG 500.yEOR 795 ws Soo-rEax EG 100.YEN3 EN M 106-Y---------------- 790 EG 50.Y C W550.YEN3 O EG i0.YEN3 785 wG larEra 00 ------ cm 5oo-YEOR W-----0-_--. 780 cnt 1oo�YEcx CM 50-YEOI. cM i0.YEN3 775 i sa 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 CSX RaiMW 1 800 0 2 -------`-------- 5 EG 500.YEOR 795 we SoaYEax E--100.YE0R y EG 50.YEOR 790 we So-rEax W5100.YEOR C k_ 785 _RM: - cM 1o'aYEax W 760 WG 10..YEOR _...- ..... __ CM 50.YEOR 775 ` (aoina if .rfrf 770 1500 1600 1700 1800 1900 2000 2100 2200 2800 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 CSX Railway '� .075 i( .1 _ 800 0 -p„M 5 EG 500.YEOR 795 we Soo-rEax EG 100.YEOR EG 50.YEN2 790 qP CM 500.YEN2 ?✓ EG I0.YEOR M 1 YEN 785 cm io'o-rEax GI150.YEOlt W 780 we So-rEca .. ............._ _........ ..-....... -_.... W51aYE0R G1110.YEOR 775 i 770 1700 1800 1900 2000 2100 2200 2800 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 79O L". d EG 50aYE0R EG 10aYE0R 765 EG 5aY M Sp yY GM 50Y 780 M 156-YEax Q CM 100-YEOR {p EG 1a------------YE0R 775 cm SaYEax W W55aYE0R W51aYE0R 770 CM I:YEOR G+o�H Iron sa�S a 765 1700 1800 1900 2000 2100 2200 2800 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 J L 1 7so 0 9, , 6 -------- "-------- � EG 5oaYEAR ........r........ EG 1oaYEAR 785 EG 5aYEAR ws wo-vEaa .. cm souvEaa � 780 wsio YEaa � cm m---na d-------------------------------------- ----------------------- ec iaYEna W775cm ........................ so-YEna ws SoxEaa ws is Eaa 770 bm iaYEna crow es� 765 1700 1800 1900 2000 2100 2200 2800 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 L 790 0 Leg" 6 EG 50aYEAR 785 Ec ioavEna EG 5aYEAR ws wo-vEaa ^ 780 cm c wsio vEaa � 775 cm ouvEne EG iavEna W cm savEaa 770 ws �� ws iavEaa 765 cm iarEna crow 760 1700 1800 1900 2000 2100 2200 2300 2400 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 I L .1 r .1 785 0 Legend 6 ...-------- "---------- EG 500-YEAR 780 WS 500-YEAR EG 100-YEAR 775 WS100-YEAR ----------- •---------- o EG 50-YEAR 770 � WS 50-YEAR m W EG 10-YEAR 765 ___.+. _...._..... ------------------------------ Crit 10-YEAR WS 10-YEAR 7so Ground • Bank Sta 755 1700 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip ip w 1700 1800 Powells Creek Proposed Plan: Proposed 9/10/2021 1 '.uo 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 Cling Lane - Route 1226 1800 1900 2000 2100 2200 2300 Station (ft) 2400 2500 2400 2500 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 Cling Lane - Route 1226 �.1.Oo"'r .1 _ 785 -pane EG 500.YEOR 780 wG SoaYEax EG100.YEN2 y EG 56YEN2 775 cm soo-rEax � EG I6YEN2 Cm 10TY 770- ..........�.............. l0 N Cm 50.YEOR WG 100.YEOR W 765 ws So-rErx W510.YEN Cm i0.YE01i 760 • Iron Bn�S a 755 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 Tao EG 100.YEOR EG56YEN2 775 EG 500.YEN2 W$ 500-YEN2 Cm 500.Y � 770 EG I0.YEN2 Q M 1 YEN {0 M 50.YEOR cmloaY----------------------------------------------------------------------------------- W765 WG I0.YEOR CM 50.YEOR 76o .......... ....... ........ CM1 •YENS IneR BnS a 755 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) L Powells Creek Proposed 6 c 1800 c w Plan: Proposed 9/10/2021 1 1900 2000 2100 2200 2300 Station (f ) Powells Creek Proposed Plan: Proposed 9/10/2021 1800 1900 6 6 2000 Station (ft) 2100 1 2400 2200 2500 2300 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) c c W Powells Creek Proposed Plan: Proposed 9/10/2021 1 N 1 iy 1600 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1600 1900 2000 2100 2200 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 745 o g" 6 -------- "-------- 740 EG 5oaY .....---T-------- EG10aYEAR 735 ec ws wo-vEaa c 730 cm sourEaa � wsio vEaa 725 cm ouvEne EG iavEna w 720 .............................. cm savEaa ws wvEaa 715 ws iavEaa cm iarEna 710 cow es� 705 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 J .1 730 0 i,e„y 6 -------- "-------- EG 5oaYEAR 725 EG ioavEna ................ EG 5aYEAR ws wo-vEaa 720 ^ cm wsio vEaa � 715 cm davEnre EG iavEna w ws iavEaa 705 cm iavEna crow es� 700 1700 1800 1900 2000 2100 2200 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 715 ---------------- 700 695 690 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 .06 6901 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Powells Creek Proposed Plan: Proposed 9/10/2021 690 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 710 EG EGW 690 685 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com ip ip W Powells Creek Proposed Plan: Proposed 9/10/2021 1 ' ' .06 'fif .1 1800 1850 1900 1950 2000 2050 2100 2150 2200 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 -I- .05) it .1 _I 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 .07 700 0 o EG 50aYEAR 695 Ec ioavEna EG 5aYEAR ws wo-vEaa ., 690 cm wsio vEaa c 685 cm ouvEne EG 1aYEAR W cm so-vEna 680 .............................................................».............. ws iavEaa 675 cm iarEna crow es� 670 1600 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 _I-Guo : 07 710 Legend ----------------------- EG 500-YEAR 700 w-- 500-YEAR EG 100-YEAR 690 WS 100-YEAR c O — 1 EG 54YEAR W-- 50-YEAR 680 iy ....................... EG 10-YEAR wS 10-YEAR 670 Ground • Bank Sta 660 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 .1 � .07 � 710 �a a s EG 500.YEN3 W$ 5pp-YENS 700 EG 100.YENi W5100.YEN y EG 50.YENi 690 w5 wyY c Q EG i0...._._._...... YEN2 L...........X .............. CM 500.YEN2 > w 680 W510.YENi ___+. cM 100-Y 670 ... CM 1:YEN2 In¢R ea �S a 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 Ja"ins Gap Road - Roule 691 .1 i.07� 710 6 g._._..„_..._- EG 500.YENi W$ 5pp-YEN2 700 EG 100.YENi M 100.YENi y EG 50.Y 690 w5 wyY Q EG i0.YEN3 {0 WG I0.YENi N 680 µ. CM 50:YEN2 W Cnt 100Y --_--_--_--_--_ CM50-Y 670 CM I.YENi IneR Ba �S a 66U 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 Jaimins Gap Road - Route 691 r.07 _I(.06) .1 695 Leg" - ----- "-------- EG 50aYEAR 69U ws 50I EaR p EG 10aYEAR 685 ws 1oo-YEaR EG 5aYEAR C � 680 WS 50-YETR — Cn150IYEAR a'o 675 __--- CHI r __. 0aYEAR _ W ...a .............. cm so-YEnR 670 Ec 1aYEnR ws lavEaR 665 CHI laYEu crow ea�s1>, 660 1400 1600 1800 2000 2200 2400 Stalion (f ) Powells Creek Proposed Plan: Proposed 9/10/2021 REVISED CROSS SECTION .07 'i(.06) i( .1 695 Legend -- 500-Y R EG 50YEAR 690 EG 100-YEAR 685 EG W0. R WS 500- E 680 ........___50x......._____ Cn1aYEAR � O — WS 100.YEAR m' 675 WS 50- E EG I0.YEAR 670 ---------- -------- ---- Cn11001- AR WS 10- E 665 Ground Bank• SW 660 1400 1600 1800 2000 2200 2400 Stalion (f ) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 NEW SURVEY CROSS SECTION .07 06.1 695 Legend 690 EG 500-YEAR WS 500-YEAR 685 - ---------T----------- EG 100-YEAR 680 1 EGEG 5 0 — WS 100-YEAR 675 WS 50-YEAR w EG 10-YEAR 670 - WS 10-YEAR 665 Ground • Bank St, 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 REVISED CROSS SECTION .07 _�_ .06it .1� 690 Legend ---------"---------- EG 500-YEAR 685 . ---------I---------- EG 100-YEAR WS 500-YEAR 680 . � E........... G 50-YEA R o WS 106-YEAR 675 � WS 50-YEAR W Crit 500-YEAR 670 .................................................... ............................. ...... EG 10-YEAR WS 10-YEAR 665 Ground • Bank Sta 660 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) C ip w Powells Creek Proposed Plan: Proposed 9/10/2021 NEW SURVEY CROSS SECTION 1 1400 1600 1800 2000 2200 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 REVISED CROSS SECTION r .07 )it .06) .1 1600 1700 1800 1900 Station (ft) 2000 2100 2200 EG EG EGWY EG 1OYE an loavEna CM savEnre W510-yE Ground Bank BW 2400 EG EG 10- E I i Ground Ban�Sla 2300 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 REVISED CROSS SECTION .07 _L_06.1� 685 Legend ----------"---------- EG 500-YEAR 680 f WS 504YEAR EG 100-YEAR 675 EG 50-YEAR o WS 106-YEAR 670 WS 50-YEAR m W EG 10-YEAR 665 - --- --- - -- --- _ Cnt 50-YEAR WS 10-YEAR 660 Ground Bak Sta 655 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 I 1 1 675 o Leg" 6 --- -------- EG50aYEAR 670 ........r........ EG 10aYEAR EG 5aYEAR ws wo-YEaR .-. 665 cm c -ec c iavEna 660 ws ioo-YEaR _.....--... R --r CrM 1...I W CM 5aYEAR 655 ws &� ws iavEaR 650 cm iaYEue crow esn 645 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 1�.i( .m -,e Leg" 6 EG 50a EAR W--- EAR 660 EG 106YEAR .._..-a_._... EG 5aYEAR wslo YEAR 655 c N5 50-YEAR — cm soo-YEAR EG 1aYEAR w 650 cm 1aaYEAR - --- - Gn so-YEna - -------- -- 645 ........_,............ cm 1av crow es 640 1600 1300 2000 2200 2400 2600 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 .07 655 0 -,e„y 6 -------- "------ EG50aYEAR EG 10aYEAR 650 - -G- - E5aYEAR ws wo-YEAR .-, cm sourEna 645 -ec c iavEna 0 — ws loaYEAR m c_..m YEAR...-loo---r-.._ R W 640 ...•.......... CM 5aYEAR N5 50-YEAR ws 1aYEAR 635 bm 1aYEnie crow es 630 1900 2000 2100 2200 2300 2400 2500 2600 2700 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 .0 655 0 Legend 6 EG 500-YEAR 650 WS 500-YEAR EG 100-YEAR 645 WS 100-YEAR c O — 1 EG 54YEAR W 640 W-- 50-YEAR ......................... EG 10-YEAR WS 10-YEAR 635 Ground • Bank St, 630 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 1 .07 655 6 ------o EG 500.YEOR 650 EG 100.YEN3 EG 50.YEOR 645 eoM r W550.YFOR Q M 1 Y640- EN {p EG 16YEN2 cm mo-YEca W 635 ws lo-•YEca CM 50. FOR GM i0.YEN3 630 i sa 625 1800 2000 2200 2400 2600 2800 3000 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 Gathaross Lane 650 ----------------- EGW 625 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 Gathaross Lane 655 645 EGW 635 630 625 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Powells Creek Proposed Plan: Proposed 9/10/2021 07 r .07 sso o ,,. EG 500.YEOR 655 Ec ioo-vEax EG 50.YEOR 650 ws Soo-rEax CM 500-Y ?✓ M100.YEOR a 645 cm o•arEax G1150.YEN2 j m _ 640 W550.YEOR W EG 1aYEN2 635 wG larErx ian laYErx 630 • 625 1600 1800 2000 2200 2400 2600 2800 3600 Station (ft) Powells Creek Proposed Plan: Proposed 9/10/2021 0i( .07 6551..07 6 — --�e-e ----- EG SOaY 650 ws soaVEna EG 10aYEPR 645 EG WV W510ayE C O N55aVEPf2 640 as 500-y x N W 1 EG -- EG 0.YEM 635 aa+00-y� .... 50- ... CMSaVEAR 630 ws 10-y u Gym eznk SYa 625 1600 1800 2000 2200 2400 2600 2800 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: Proposed 9/10/2021 .1 _L .06) .07 645 Leg" - ----- "-------- EG 500. EAR 640 W5500.YETR ------_t___-. EG 100.YEAR -----'--a___--. EG 50.YEAR 635 ., c cm wslo YEaR � 630 ws 50-YEaR � cm 1aaYEnR w Ec lo-vEnR Gn so-vEna .............. ws lo-vEna 620cm lavEna crow es� 615 1700 1800 1900 2000 2100 2200 2300 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Existing Tabular Results HEC-RAS Plan: PRE -PROJECT -EX River: POWELLS CREEK Reach: POWELLS CR Reach Riser Sta Profile 0 Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cfs) (ft) (ft) (ft) (ft) (ftm) (fus) (sq ft) (ft) POWELLS OR 7960 10-YEAR 740.00 780.50 785.90 785.90 786.38 0.019615 7.30 187.05 169.45 0.62 POWELLS OR 7960 50-YEAR 1170.00 780.50 786.27 786.27 786.82 0.022849 8.33 251.09 175.40 0.68 POWELLS OR 7960 100-YEAR 1350.00 780.50 786.36 786.36 786.99 0.026172 9.02 265.38 176.70 0.73 POWELLS OR 7960 500-YEAR 1980.00 780.50 795.78 795.79 0.000074 1.00 2506.92 278.91 0.05 POWELLS OR 7755 10-YEAR 750.00 773.70 779.71 779.71 780.31 0.017709 7.73 174.34 146.BB 0.61 POWELLS OR 7755 1 50-YEAR 1180.00 773.701 784.53 1 784.54 0.0002601 1.48 1266.451 292.18 0.08 POWELLS OR 7755 100-YEAR 1360.00 773.70 786.12 786.13 0.000142 1.20 1770.47 344.07 0.06 POWELLS OR 7755 500-YEAR 1990.00 773.70 795.78 795.78 0.000009 0.45 6495.41 597.51 0.02 POWELLS OR 7705 10-YEAR 750.00 772.10 779.37 776.00 779.60 0.002866 4.16 213.82 146.47 0.28 POWELLS OR 7705 50-YEAR 1180.00 772.10 784.52 777.67 784.53 0.000137 1.32 1493.61 291.97 0.07 POWELLS OR 7705 100-YEAR 1360.00 772.10 786.11 777.99 786.12 0.000088 1.15 1998.23 343.89 0.05 POWELLS OR 7705 500-YEAR 1990.00 772.10 795.78 778.97 795.78 0.000007 0.48 6724.65 597.50 0.02 POWELLS OR 17675 Culvert POWELLS OR 7645 10-YEAR 750.00 771.10 778.81 775.021 779.04 0.002632 4.15 231.04 134.29 0.27 POWELLS OR 7645 50-YEAR 1180.00 771.10 783.98 776.59 784.00 0.000232 1.76 1435.08 277.41 0.09 POWELLS OR 7645 100-YEAR 1360.00 771.10 786.09 777.05 786.10 0.000126 1.44 2085.07 343.06 0.07 POWELLS OR 7645 500-YEAR 1990.00 771.10 795.77 778.13 795.77 0.000013 0.65 6814.04 597.35 0.02 POWELLS OR 7632 10-YEAR 750.001 770.90 778.82 778.97 0.002029 3.70 360.28 134.46 0.25 POWELLS OR 7632 50-YEAR 1180.00 770.90 783.97 784.00 0.000231 1.80 1429.33 277.29 0.09 POWELLS OR 7632 100-YEAR 1360.00 770.901 786.09 786.101 0.000126 1.481 2079.68 342.98 0.07 POWELLS OR 7632 500-YEAR 2000.00 770.90 795.77 795.77 0.000013 0.67 6809.25 597.35 0.02 POWELLS OR 7619 10-YEAR 750.00 770.60 778.65 775.01 778.91 0.002881 4.39 213.33 129.46 0.29 POWELLS OR 7619 50-YEAR 1180.00 770.60 783.81 776.58 783.95 0.000865 3.45 429.95 272.77 0.17 POWELLS OR 7619 100-YEAR 1360.00 770.60 785.93 777.00 786.06 0.000634 3.29 519.06 337.48 0.15 POWELLS OR 7619 500-YEAR 2000.00 770.60 795.77 778.15 795.77 0.000013 0.67 6813.98 597.34 0.02 POWELLS OR 7575 Bridge POWELLS OR 7530 10-YEAR 750.00 769.90 774.91 774.56 775.98 0.021700 8.52 102.26 178.92 0.73 POWELLS OR 7530 50-YEAR 1180.00 769.90 775.64 775.64 777.29 0.028188 10.81 132.92 209.04 0.86 POWELLS OR 7530 100-YEAR 1360.00 769.90 776.00 776.00 777.78 0.028210 11.33 147.94 216.90 0.87 POWELLS OR 7530 500-YEAR 2000.00 769.90 777.09 777.09 779.32 0.028607 12.95 194.02 241.04 0.90 POWELLS OR 7480 10-YEAR 750.00 768.40 774.05 774.05 774.77 0.019833 8.36 185.48 137.19 0.68 POWELLS OR 7480 50-YEAR 1180.00 768.40 774.63 774.63 775.43 0.022566 9.62 274.80 172.39 0.73 HEC-RAS Plan: PRE -PROJECT -EX River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cls) (ft) (ft) (ft) (ft) (ftm) ON (sq ft) (ft) POWELLS OR 7480 100-YEAR 1360.00 768.40 774.87 774.87 775.65 0.021928 9.78 318.94 187.36 0.73 POWELLS OR 7480 500-YEAR 2000.00 768.40 775.41 775.41 776.24 0.023864 10.84 424.46 203.99 0.77 POWELLS OR 7300 10-YEAR 750.00 763.00 769.10 768.96 769.72 0.016510 7.79 199.74 143.76 0.61 POWELLS OR 7300 50-YEAR 1200.00 763.00 769.62 769.62 770.41 0.021404 9.46 283.18 176.42 0.70 POWELLS OR 7300 100-YEAR 1370.00 763.00 769.82 769.82 770.62 0.021928 9.79 318.29 188.48 0.72 POWELLS OR 7300 1 500-YEAR 2010.00 763.001 770.37 770.371 771.22 0.0234771 10.77 430.991 210.87 0.75 POWELLS OR 7045 10-YEAR 760.00 758.00 762.90 762.90 764.24 0.028136 9.43 94.31 56.08 0.84 POWELLS OR 7045 50-YEAR 1210.00 758.00 764.79 765.51 0.011301 7.78 272.10 131.79 0.57 POWELLS OR 7045 100-YEAR 1390.00 758.00 765.64 766.11 0.007000 6.71 397.07 161.27 0.46 POWELLS CR 7045 500-YEAR 2020.00 758.00 768.35 768.51 0.002086 4.60 953.14 250.41 0.27 POWELLS CR 6995 10-YEAR 760.00 757.00 762.37 760.24 762.84 0.007434 5.60 148.74 64.93 0.44 POWELLS OR 6995 50-YEAR 1210.00 757.00 764.56 761.52 765.03 0.004901 5.78 240.84 127.43 0.38 POWELLS OR 6995 1 100-YEAR 1390.00 757.001 765.35 762.021 765.83 0.0044001 5.87 274.011 151.50 0.36 POWELLS OR 6995 500-YEAR 2020.00 757.00 768.28 763.19 768.41 0.001218 3.80 1065.28 248.32 0.20 POWELLS OR 6960 Culvert POWELLS OR 6925 10-YEAR 760.00 756.10 760.63 759.29 761.19 0.010438 3.21 137.77 301.29 0.53 POWELLS OR 6925 50-YEAR 1210.00 756.10 761.06 760.34 762.18 0.018608 8.84 156.03 305.63 0.72 POWELLS OR 6925 100-YEAR 1390.00 756.10 761.17 760.69 762.56 0.022647 9.89 160.48 306.69 0.79 POWELLS OR 6925 500-YEAR 2020.00 756.10 761.80 761.80 761.95 0.004201 4.62 880.82 313.00 0.35 POWELLS OR 6875 10-YEAR 760.00 754.60 760.06 760.06 760.44 0.016889 6.91 283.94 295.64 0.58 POWELLS OR 6875 50-YEAR 1210.00 754.60 760.32 760.32 760.82 0.024056 8.56 358.94 298.16 0.70 POWELLS OR 6875 100-YEAR 1390.00 754.60 760.45 760.45 760.94 0.024311 8.76 397.42 299.45 0.71 POWELLS OR 6875 500-YEAR 2020.00 754.60 760.91 760.72 761.36 0.022351 8.94 536.66 304.07 0.69 POWELLS OR 6490 10-YEAR 770.00 743.00 749.22 749.22 750.20 0.021862 9.10 147.50 88.32 0.70 POWELLS OR 6490 50-YEAR 1230.00 743.00 750.12 750.12 751.11 0.021451 10.02 240.67 117.56 0.71 POWELLS OR 6490 100-YEAR 1400.00 743.00 750.34 750.34 751.36 0.0222191 10.43 266.361 122.06 0.73 POWELLS OR 6490 500-YEAR 2040.00 743.001 750.99 750.991 752.17 0.0250421 11.83 350.95 135.84 0.79 POWELLS CR 6120 10-YEAR 780.00 733.00 739.19 739.19 740.09 0.021181 8.92 160.34 101.68 0.69 POWELLS CR 6120 50-YEAR 1240.00 733.00 740.02 740.02 740.93 0.020983 9.80 259.55 135.52 0.70 POWELLS CR 6120 100-YEAR 1410.00 733.00 740.24 740.24 741.16 0.021150 10.08 290.08 140.60 0.71 POWELLS OR 6120 500-YEAR 2050.00 733.00 740.81 740.81 741.89 0.024884 11.58 372.92 153.56 0.78 POWELLS OR 5735 10-YEAR 790.00 723.00 729.09 729.09 729.87 0.020109 8.58 183.60 129.13 0.67 HEC-RAS Plan: PRE -PROJECT -EX River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile 0 Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cts) (ft) (ft) (ft) (ft) (ftm) ON (sq ft) (ft) POWELLS OR 5735 50-YEAR 1260.00 723.00 729.78 729.78 730.61 0.021579 9.67 286.03 167.77 0.71 POWELLS OR 5735 100-YEAR 1430.00 723.00 730.03 730.03 730.82 0.020617 9.72 329.40 180.48 0.70 POWELLS OR 5735 500-YEAR 2070.00 723.00 730.50 730.50 731.41 0.024192 11.07 415.82 187.98 0.77 POWELLS OR 5190 10-YEAR 800.00 708.50 714.52 714.52 715.62 0.023450 9.65 138.98 73.31 0.75 POWELLS OR 5190 50-YEAR 1280.00 708.50 715.49 715.49 716.65 0.022894 10.69 220.08 91.35 0.76 POWELLS OR 5190 1100-YEAR 1450.00 708.501 715.73 715.721 716.94 0.0234181 11.10 242.821 94.53 0.78 POWELLS OR 5190 500-YEAR 2090.00 708.50 716.68 716.47 717.90 0.022017 11.81 338.47 106.88 0.77 POWELLS OR 4885 10-YEAR 810.00 701.20 707.45 707.45 708.50 0.022475 9.44 146.18 79.53 0.72 POWELLS CR 4885 50-YEAR 1290.00 701.20 708.37 708.37 709.50 0.022969 10.62 231.11 104.94 0.75 POWELLS CR 4885 100-YEAR 1460.00 701.20 708.61 708.61 709.79 0.023444 11.01 257.63 111.70 0.76 POWELLS CR 4885 500-YEAR 2100.00 701.20 709.34 709.34 710.66 0.025524 12.34 346.79 131.90 0.81 POWELLS OR 4330 10-YEAR 810.00 689.11 693.59 693.66 0.003754 3.60 511.23 273.53 0.31 POWELLS OR 4330 50-YEAR 1290.00 689.111 694.23 694.31 0.004235 4.19 699.15 314.88 0.33 POWELLS OR 4330 100-YEAR 1460.00 689.11 694.41 694.50 0.004399 4.38 757.92 326.74 0.34 POWELLS OR 4330 500-YEAR 2100.00 689.11 695.02 695.14 0.004776 4.92 970.61 366.12 0.36 POWELLS OR 4292 10-YEAR 810.00 688.41 693.42 693.50 0.004215 3.89 479.83 263.50 0.32 POWELLS OR 4292 50-YEAR 1290.00 688.41 694.03 694.14 0.004870 4.55 653.54 302.85 0.35 POWELLS OR 4292 100-YEAR 1460.00 688.41 694.21 694.32 0.005095 4.76 707.31 314.04 0.36 POWELLS OR 4292 500-YEAR 2100.00 688.41 694.80 694.94 0.005592 5.35 905.12 352.14 0.39 POWELLS OR 14248 10-YEAR 1 810.00 687.471 693.15 693.28 0.0058431 4.59 409.741 244.35 0.37 POWELLS OR 4248 50-YEAR 1290.00 687.471 693.71 693.88 0.006926 5.38 558.69 281.25 0.41 POWELLS OR 4248 100-YEAR 1460.00 687.47 693.87 694.05 0.007319 5.64 603.65 291.47 0.42 POWELLS OR 4248 500-YEAR 2100.00 687.47 694.43 694.64 0.008014 6.29 777.90 328.10 0.45 POWELLS OR 4210 10-YEAR 820.00 686.70 692.28 692.28 692.85 0.021570 8.03 228.05 189.10 0.67 POWELLS OR 4210 50-YEAR 1320.00 686.70 692.91 692.75 693.42 0.020168 8.47 359.99 229.88 0.66 POWELLS OR 4210 100-YEAR 1480.00 686.70 693.09 692.87 693.59 0.019604 8.55 401.72 241.35 0.65 POWELLS OR 4210 500-YEAR 2130.00 686.70 693.72 694.17 0.017816 8.77 565.71 281.93 0.63 POWELLS CR 3550 10-YEAR 840.00 670.501 677.28 677.28 678.33 0.0219941 9.31 147.79 81.91 0.69 POWELLS CR 3550 50-YEAR 1340.00 670.50 678.21 678.21 679.31 0.022499 10.42 236.18 110.09 0.72 POWELLS CR 3550 100-YEAR 1510.00 670.50 678.44 678.44 679.57 0.022823 10.74 263.29 117.38 0.73 POWELLS OR 3550 500-YEAR 2160.00 670.50 679.17 679.17 680.40 0.024440 11.89 355.95 139.46 0.76 POWELLS OR 3334 10-YEAR 850.00 665.20 671.29 672.00 0.013201 6.80 132.76 46.88 0.61 POWELLS OR 3334 50-YEAR 1350.00 665.20 674.72 674.95 0.002341 4.36 507.92 176.90 0.28 HEC-RAS Plan: PRE -PROJECT -EX River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cls) (ft) (ft) (ft) (ft) (ftm) ON (sq ft) (ft) POWELLS OR 3334 100-YEAR 1520.00 665.20 675.13 675.35 0.002223 4.40 582.40 185.77 0.28 POWELLS OR 3334 500-YEAR 2170.00 665.20 676.09 676.35 0.002434 4.98 769.55 205.82 0.30 POWELLS OR 3284 10-YEAR 850.00 663.00 670.90 667.42 671.45 0.008421 5.98 143.39 22.79 0.39 POWELLS OR 3284 50-YEAR 1350.00 663.00 674.46 668.88 674.78 0.003958 5.01 427.77 163.04 0.27 POWELLS OR 3284 100-YEAR 1520.00 663.00 674.89 669.34 675.19 0.003807 5.05 499.16 171.36 0.27 POWELLS OR 3284 500-YEAR 2170.00 663.001 675.83 671.051 676.16 0.0043041 5.66 668.441 189.65 0.29 POWELLS OR 3260 Culvert POWELLS CR 3186 10-YEAR 850.00 662.37 667.62 668.33 0.018142 6.80 128.35 45.24 0.66 POWELLS CR 3186 50-YEAR 1350.00 662.37 668.58 669.59 0.018671 8.17 178.00 59.30 0.70 POWELLS CR 3186 100-YEAR 1520.00 662.37 668.77 668.10 669.91 0.020159 8.74 189.60 62.41 0.73 POWELLS OR 3186 500-YEAR 2170.00 662.37 669.23 668.96 671.06 0.028661 11.13 220.76 77.92 0.89 POWELLS OR 3166 10-YEAR 1 850.00 662.211 667.43 667.88 0.0143951 5.40 157.261 61.65 0.60 POWELLS OR 3166 50-YEAR 1350.00 662.21 668.53 669.01 0.012999 5.55 245.02 90.54 0.58 POWELLS OR 3166 100-YEAR 1520.00 662.21 668.77 669.28 0.012598 5.76 266.56 92.02 0.58 POWELLS OR 3166 500-YEAR 2170.00 662.21 669.41 670.11 0.013396 6.74 338.77 152.19 0.62 POWELLS OR 3136 1OYEAR 850.00 661.76 667.09 667.49 0.011096 5.13 171.12 66.81 0.54 POWELLS OR 3136 50-YEAR 1350.00 661.76 668.15 668.68 0.009614 5.89 248.82 99.69 0.53 POWELLS OR 3136 100-YEAR 1520.00 661.76 668.35 668.94 0.010162 6.27 270.72 117.79 0.54 POWELLS OR 3136 500-YEAR 2170.00 661.76 668.77 667.78 669.68 0.014203 7.90 326.63 149.94 0.65 POWELLS OR 3026 10-YEAR 850.00 659.73 665.19 665.91 0.018258 6.82 124.70 40.25 0.68 POWELLS OR 3026 50-YEAR 1350.00 659.73 666.09 665.381 667.12 0.020722 8.20 180.58 121.37 0.75 POWELLS OR 3026 100-YEAR 1520.00 659.73 666.41 665.66 667.41 0.018806 8.20 226.90 157.90 0.72 POWELLS OR 3026 500-YEAR 2170.00 659.73 667.25 667.25 668.13 0.014942 8.24 414.07 276.51 0.66 POWELLS OR 2965 10-YEAR 850.00 659.39 664.38 664.90 0.012510 5.83 145.82 47.751 0.58 POWELLS OR 2965 50-YEAR 1350.00 659.39 664.94 664.16 665.86 0.018098 7.77 186.69 102.98 0.71 POWELLS OR 2965 1100-YEAR 1520.00 659.391 664.99 664.42 666.12 0.0217861 8.61 192.05 105.98 0.78 POWELLS OR 2965 500-YEAR 2170.00 659.39 666.12 666.12 666.98 0.013458 8.07 414.81 295.90 0.64 POWELLS CR 2860 10-YEAR 860.00 658.55 663.18 1 663.63 0.012296 5.84 200.84 157.06 0.57 POWELLS CR 2860 50-YEAR 1370.00 658.55 663.96 663.35 664.39 0.010454 6.21 391.71 331.18 0.54 POWELLS OR 2860 100-YEAR 1530.00 658.55 664.11 664.52 0.010108 6.25 440.05 334.42 0.54 POWELLS OR 2860 500-YEAR 2190.00 658.55 664.63 665.00 0.009120 6.41 616.34 344.85 0.52 POWELLS OR 2365 10-YEAR 870.00 649.70 655.69 655.69 656.27 0.019130 8.011 243.85 184.88 0.64 HEC-RAS Plan: PRE -PROJECT -EX River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile 0 Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cts) (ft) (ft) (ft) (ft) (ftm) ON (sq ft) (ft) POWELLS OR 2365 50-YEAR 1390.00 649.70 656.13 656.13 656.84 0.024738 9.64 327.90 200.57 0.73 POWELLS OR 2365 100-YEAR 1550.00 649.70 656.25 656.25 656.99 0.025736 9.99 353.16 205.06 0.75 POWELLS OR 2365 500-YEAR 2200.00 649.70 656.67 656.67 657.53 0.029630 11.26 443.06 220.28 0.82 POWELLS OR 1810 10-YEAR 880.00 641.00 646.00 645.88 646.22 0.012960 5.87 327.19 335.75 0.52 POWELLS OR 1810 50-YEAR 1410.00 641.00 646.51 646.09 646.70 0.010333 5.67 509.69 381.79 0.47 POWELLS OR 1810 1100-YEAR 1570.00 641.001 646.63 646.191 646.81 0.0101931 5.73 554.831 392.34 0.47 POWELLS OR 1810 500-YEAR 2230.00 641.00 647.05 646.45 647.25 0.009861 5.97 727.13 429.51 0.47 POWELLS OR 1290 10-YEAR 890.00 633.30 638.02 638.02 638.32 0.018001 6.80 303.82 379.94 0.62 POWELLS CR 1290 50-YEAR 1430.00 633.30 638.22 638.22 638.64 0.025453 8.38 385.75 407.87 0.74 POWELLS CR 1290 100-YEAR 1580.00 633.30 638.29 638.29 638.71 0.026419 8.63 410.80 416.03 0.75 POWELLS CR 1290 500-YEAR 2250.00 633.30 638.53 638.53 639.01 0.029121 9.42 518.42 449.42 0.80 POWELLS OR 1111 10-YEAR 900.00 630.60 635.09 635.17 0.007030 4.22 544.21 701.64 0.39 POWELLS OR 1111 1 50-YEAR 1440.00 630.601 635.45 635.52 0.005556 4.00 801.22 708.57 0.35 POWELLS OR 1111 100-YEAR 1590.00 630.60 635.53 635.60 0.005513 4.03 855.99 710.04 0.35 POWELLS OR 1111 500-YEAR 2260.00 630.60 635.81 635.89 0.005798 4.32 1053.25 715.29 0.36 POWELLS OR 1061 10-YEAR 900.00 629.90 634.76 634.00 634.91 0.003861 3.95 508.45 586.09 0.33 POWELLS OR 1061 50-YEAR 1440.00 629.90 635.00 634.68 635.22 0.006024 5.11 662.97 700.08 0.42 POWELLS OR 1061 100-YEAR 1590.00 629.90 635.00 634.76 635.26 0.007383 5.65 661.53 700.04 0.47 POWELLS OR 1061 500-YEAR 2260.00 629.90 635.33 635.12 635.56 0.006965 5.75 892.53 706.33 0.46 POWELLS OR 11040 Culvert POWELLS OR 1019 10-YEAR 900.00 629.20 633.79 633.791 634.16 0.009130 5.61 331.08 560.38 0.50 POWELLS OR 1019 50-YEAR 1440.00 629.20 634.16 634.16 634.46 0.008958 5.89 572.99 701.10 0.50 POWELLS OR 1019 100-YEAR 1590.00 629.20 634.21 634.21 634.53 0.009584 6.14 606.65 702.17 0.52 POWELLS OR 1019 500-YEAR 2260.00 629.20 634.40 634.40 634.77 0.011908 7.04 740.51 706.45 0.58 POWELLS OR 969 10-YEAR 900.00 628.40 632.74 632.84 0.009595 4.68 463.82 605.05 0.45 POWELLS OR 969 50-YEAR 1440.00 628.40 632.97 632.74 633.10 0.010993 5.24 607.81 617.53 0.48 POWELLS OR 969 100-YEAR 1590.00 628.401 633.01 632.75 633.15 0.0119721 5.51 630.911 619.51 0.50 POWELLS CR 969 500-YEAR 2260.00 628.40 633.26 632.90 633.43 0.012185 5.80 789.49 632.94 0.51 POWELLS CR 185 10-YEAR 920.00 616.00 620.30 620.00 621.59 0.029340 9.10 101.54 33.60 0.87 POWELLS OR 185 50-YEAR 1470.00 616.00 622.00 621.30 623.28 0.017614 9.26 176.00 54.00 0.73 POWELLS OR 185 100-YEAR 1620.00 616.00 622.50 621.61 623.71 0.014932 9.08 204.50 60.00 0.68 POWELLS OR 185 500-YEAR 2290.00 616.00 624.00 622.81 625.18 0.011414 9.31 308.00 78.00 0.62 Proposed Tabular Results HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS OR Reach River Sta Profile Q Total Min Ch El W.S. Elev Grit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cfs) (f) (f) (f) (fl) (fvft) (fvs) (sq fi) (fi) POWELLS OR 7960 10-YEAR 740.00 780.50 785.90 785.90 786.38 0.019615 7.30 187.05 169.45 0.62 POWELLS OR 7960 50-YEAR 1170.00 780.50 786.27 786.27 786.82 0.022849 8.33 251.09 175.40 0.68 POWELLS OR 7960 100-YEAR 1350.00 780.50 786.36 786.36 786.99 0.026172 9.02 265.38 176.70 0.73 POWELLS OR 79W 500-YEAR 1980.00 780.50 795.78 795.79 0.000074 1.00 2506.92 278.91 0.05 POWELLS OR 7755 10-YEAR 750.00 773.70 779.71 779.71 780.31 0.017709 7.73 174.34 146.88 0.61 POWELLS OR 7755 50-YEAR 1180.00 773.701 784.53 1 784.54 0.0002601 1.48 1266.451 292.18 0.08 POWELLS OR 7755 100-YEAR 1360.00 773.70 786.12 786.13 0.000142 1.20 1770.47 344.07 0.06 POWELLS OR 7755 500-YEAR 1990.00 773.70 795.78 795.78 0.000009 0.45 6495.41 597.51 0.02 POWELLS OR 7705 10-YEAR 750.00 772.10 779.37 776.00 779.60 0.002866 4.16 213.82 146.47 0.28 POWELLS OR 7705 50-YEAR 1180.00 772.10 784.52 777.67 784.53 0.000137 1.32 1493.61 291.97 0.07 POWELLS OR 7705 100-YEAR 1360.00 772.10 786.11 777.99 786.12 0.000088 1.15 1998.23 343.89 0.05 POWELLS OR 7705 500-YEAR 1990.00 772.10 795.78 778.97 795.78 0.000007 0.48 6724.65 597.50 0.02 POWELLS OR 17675 1 Culvert POWELLS OR 7645 10-YEAR 750.00 771.10 778.81 775.021 779.04 0.002632 4.15 231.04 134.29 0.27 POWELLS OR 7645 50-YEAR 1180.00 771.10 783.98 776.59 784.00 0.000232 1.76 1435.08 277.41 0.09 POWELLS OR 7645 100-YEAR 1360.00 771.10 786.09 777.05 786.10 0.000126 1.44 2085.07 343.06 0.07 POWELLS OR 7645 500-YEAR 1990.00 771.10 795.77 778.13 795.77 0.000013 0.65 6814.04 597.35 0.02 POWELLS OR 7632 10-YEAR 750.001 770.90 778.82 778.97 0.002029 3.70 360.28 134.46 0.25 POWELLS OR 7632 50-YEAR 1180.00 770.90 783.97 784.00 0.000231 1.80 1429.33 277.29 0.09 POWELLS OR 7632 100-YEAR 1360.00 770.90 786.09 786.10 0.0001261 1.48 2079.681 342.98 0.07 POWELLS OR 7632 500-YEAR 2000.00 770.901 795.77 795.77 0.000013 0.67 6809.25 597.35 0.02 POWELLS OR 7619 10-YEAR 750.00 770.60 778.65 775.01 778.91 0.002881 4.39 213.33 129.46 0.29 POWELLS OR 7619 50-YEAR 1180.00 770.60 783.81 776.58 783.95 0.000865 3.45 429.95 272.77 0.17 POWELLS OR 7619 100-YEAR 1360.00 770.60 785.93 777.00 786.06 0.000634 3.29 519.06 337.48 0.15 POWELLS OR 7619 500-YEAR 2000.00 770.60 795.77 778.15 795.77 0.000013 0.67 6813.98 597.34 0.02 POWELLS OR 7575 Bridge POWELLS OR 7530 10-YEAR 750.00 769.901 774.91 774.56 775.98 0.021700 8.52 102.26 178.92 0.73 POWELLS OR 7530 50-YEAR 1180.00 769.90 775.64 775.641 777.29 0.028188 10.81 132.92 209.04 0.86 POWELLS OR 7530 100-YEAR 1360.00 769.90 776.00 776.00 777.78 0.028210 11.33 147.94 216.90 0.87 POWELLS OR 7530 500-YEAR 2000.00 769.90 777.09 777.09 779.32 0.028607 12.95 194.02 241.04 0.90 POWELLS OR 7480 10-YEAR 750.00 768.40 774.05 774.05 774.77 0.019833 8.36 185.48 137.19 0.68 POWELLS OR 7480 50-YEAR 1180.00 768.40 774.63 774.63 775.43 0.022566 9.62 274.80 172.391 0.73 HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS OR (Continued) Reach Riser Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Fronde # Chi (cfs) (fl) (fl) (d) (fl) (Nft) ON (sq f) (it) POWELLS OR 7480 100-YEAR 1360.00 768.40 774.87 774.87 775.65 0.021928 9.78 318.94 187.36 0.73 POWELLS OR 7480 500-YEAR 2000.00 768.40 775.41 775.41 776.24 0.023864 10.84 424.46 203.99 0.77 POWELLS OR 7300 10-YEAR 750.00 763.00 769.10 768.96 769.72 0.016510 7.79 199.74 143.76 0.61 POWELLS OR 7300 50-YEAR 1200.00 763.00 769.62 769.62 770.41 0.021404 9.46 283.18 176.42 0.70 POWELLS OR 7300 100-YEAR 1370.00 763.00 769.82 769.82 770.62 0.021928 9.79 318.29 188.48 0.72 POWELLS OR 7300 500-YEAR 2010.00 763.001 770.37 770.37 771.22 0.0234771 10.77 430.991 210.87 0.75 POWELLS OR 7045 10-YEAR 760.00 758.00 762.90 762.901 764.24 0.028136 9.43 94.31 56.08 0.84 POWELLS OR 7045 50-YEAR 1210.00 758.00 764.79 765.51 0.011301 7.78 272.10 131.79 0.57 POWELLS OR 7045 100-YEAR 1390.00 758.00 765.64 766.11 0.007000 6.71 397.07 161.27 0.46 POWELLS OR 7045 500-YEAR 2020.00 758.00 768.35 768.51 0.002086 4.60 953.14 250.41 0.27 POWELLS OR 6995 10-YEAR 760.00 757.00 762.37 760.24 762.84 0.007434 5.60 148.74 64.93 0.44 POWELLS OR 6995 50-YEAR 1 1210.00 757.00 764.56 761.52 765.03 0.004901 5.78 240.84 127.43 0.38 POWELLS OR 6995 100-YEAR 1390.00 757.001 765.35 762.02 765.83 0.0044001 5.87 274.011 151.50 0.36 POWELLS OR 6995 500-YEAR 2020.00 757.001 768.28 763.19 768.41 0.0012181 3.80 1065.28 248.32 0.20 POWELLS OR 6960 Culvert POWELLS OR 6925 10-YEAR 760.00 756.10 760.63 759.29 761.19 0.010438 6.21 137.77 301.29 0.53 POWELLS OR 6925 50-YEAR 1210.00 756.10 761.06 760.34 762.18 0.018608 8.84 156.03 305.63 0.72 POWELLS OR 6925 100-YEAR 1390.00 756.10 761.17 760.69 762.56 0.022647 9.89 160.48 306.69 0.79 POWELLS OR 6925 500-YEAR 2020.00 756.10 761.80 761.80 761.95 0.004201 4.62 880.82 313.00 0.35 POWELLS OR 6875 10-YEAR 760.00 754.601 760.06 760.06 760.44 0.016889 6.91 283.94 295.64 0.58 POWELLS OR 6875 50-YEAR 1210.00 754.601 760.32 760.321 760.82 0.024056 8.56 358.94 298.16 0.70 POWELLS OR 6875 100-YEAR 1390.00 754.60 760.45 760.45 760.94 0.024311 8.76 397.42 299.45 0.71 POWELLS OR 6875 500-YEAR 2020.00 754.60 760.91 760.72 761.36 0.022351 8.94 536.66 304.07 0.69 POWELLS OR 6490 10-YEAR 770.00 743.00 749.22 749.22 750.20 0.021862 9.10 147.50 88.32 0.70 POWELLS OR 6490 50-YEAR 1230.00 743.00 750.12 750.12 751.11 0.021451 10.02 240.67 117.56 0.71 POWELLS OR 6490 100-YEAR 1400.00 743.00 750.34 750.34 751.36 0.0222191 10.43 266.361 122.06 0.73 POWELLS OR 6490 500-YEAR 2040.00 743.00 750.99 750.99 752.17 0.0250421 11.83 350.95 135.84 0.79 POWELLS CR 6120 10-YEAR 780.00 733.001 739.19 739.19 740.09 0.021181 8.92 160.34 101.68 0.69 POWELLS OR 6120 50-YEAR 1240.00 733.00 740.02 740.02 740.93 0.020983 9.80 259.55 135.52 0.70 POWELLS OR 6120 100-YEAR 1410.00 733.00 740.24 740.24 741.16 0.021150 10.08 290.08 140.60 0.71 POWELLS OR 6120 500-YEAR 2050.00 733.00 740.81 740.81 741.89 0.024884 11.58 372.92 153.56 0.78 POWELLS CR 5735 10-YEAR 790.00 723.00 729.09 729.09 729.87 0.020109 8.58 183.60 129.13 0.67 HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS OR (Continued) Reach Riser Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froutle # Chi (cfs) (ft) (ft) (ft) (ft) (Nft) ON (sq ft) (ft) POWELLS OR 5735 50-YEAR 1260.00 723.00 729.78 729.78 730.61 0.021579 9.67 286.03 167.77 0.71 POWELLS OR 5735 100-YEAR 1430.00 723.00 730.03 730.03 730.82 0.020617 9.72 329.40 180.48 0.70 POWELLS OR 5735 500-YEAR 2070.00 723.00 730.50 730.50 731.41 0.024192 11.07 415.82 187.98 0.77 POWELLS OR 5190 10-YEAR 800.00 708.50 714.52 714.52 715.62 0.023450 9.65 138.98 73.31 0.75 POWELLS OR 5190 50-YEAR 1280.00 708.50 715.49 715.49 716.65 0.022894 10.69 220.08 91.35 0.76 POWELLS OR 5190 100-YEAR 1450.00 708.501 715.73 715.72 716.94 0.0233841 11.09 242.971 94.55 0.78 POWELLS OR 5190 500-YEAR 2090.00 708.50 716.64 716.47 717.89 0.022783 11.97 333.75 106.30 0.78 POWELLS OR 4885 10-YEAR 810.00 701.20 707.44 707.44 708.50 0.022569 9.45 145.86 79.42 0.72 POWELLS CR 4885 50-YEAR 1290.00 701.20 708.36 708.36 709.50 0.023029 10.63 230.82 104.87 0.75 POWELLS CR 4885 100-YEAR 1460.00 701.20 708.61 708.61 709.79 0.023488 11.01 257.40 111.65 0.76 POWELLS CR 4885 500-YEAR 2100.00 701.20 709.38 709.38 710.66 0.024672 12.17 352.15 133.02 0.80 POWELLS OR 4345 10-YEAR 810.00 692.34 695.63 695.34 696.03 0.017135 6.07 238.98 204.17 0.66 POWELLS OR 4345 50-YEAR 1290.00 692.341 697.09 695.93 697.24 0.004622 4.231 563.83 240.07 0.37 POWELLS OR 4345 100-YEAR 1460.00 692.34 697.57 696.06 697.70 0.003780 4.11 684.95 320.04 0.34 POWELLS OR 4345 500-YEAR 2100.00 692.34 699.25 696.451 699.33 0.001671 3.37 1194.99 368.30 0.24 POWELLS OR 4253 10-YEAR 810.00 690.00 695.58 692.86 695.62 0.000935 2.14 682.67 352.17 0.17 POWELLS OR 4253 50-YEAR 1290.00 690.00 697.01 693.27 697.05 0.000745 2.26 1015.93 404.74 0.16 POWELLS OR 4253 100-YEAR 1460.00 690.00 697.49 693.40 697.53 0.000690 2.29 1128.87 413.38 0.16 POWELLS OR 4253 500-YEAR 2100.00 690.00 699.19 693.95 699.23 0.000553 2.38 1527.24 435.16 0.14 POWELLS OR 4149 Bfidge POWELLS OR 4064 10-YEAR 810.00 686.97 690.64 690.641 691.62 0.031225 8.86 124.81 149.02 0.88 POWELLS OR 4064 50-YEAR 1290.00 686.97 691.55 691.55 692.59 0.025586 9.51 207.43 207.05 0.83 POWELLS OR 4064 100-YEAR 1460.00 686.97 691.76 691.76 692.85 0.025987 9.90 228.92 211.32 0.85 POWELLS OR 4064 500-YEAR 2100.00 686.97 692.41 692.41 693.72 0.027536 11.21 297.45 220.24 0.89 POWELLS OR 3950 10-YEAR 810.00 684.16 687.31 687.21 687.92 0.026097 7.01 176.88 144.32 0.79 POWELLS OR 3950 50-YEAR 1290.00 684.16 687.92 687.75 688.58 0.0236581 7.69 268.1191 160.43 0.78 POWELLS OR 3950 100-YEAR 1460.00 684.16 688.11 687.91 688.78 0.0229771 7.89 299.34 169.48 0.77 POWELLS CR 3950 500-YEAR 2100.00 684.161 688.74 688.44 689.44 0.020732 8.43 420.04 224.22 0.76 POWELLS OR 3550 10-YEAR 840.00 670.50 677.28 677.28 678.33 0.021994 9.31 147.79 81.91 0.69 POWELLS OR 3550 50-YEAR 1340.00 670.50 678.21 678.21 679.31 0.022499 10.42 236.18 110.09 0.72 POWELLS OR 3550 100-YEAR 1510.00 670.50 678.44 678.44 679.57 0.022823 10.74 263.29 117.38 0.73 POWELLS CR 3550 500-YEAR 2160.00 670.50 679.17 679.17 680.40 0.024440 11.89 355.95 139.46 0.76 HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS OR (Continued) Reach Riser Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Fronde # Chi (cfs) (fl) (fl) (d) (fi) (Nft) ON (sq f) (it) POWELLS OR 3334 10-YEAR 850.00 665.20 671.29 672.00 0.013201 6.80 132.76 46.88 0.61 POWELLS OR 3334 50-YEAR 1350.00 665.20 674.72 674.95 0.002341 4.36 507.92 176.90 0.28 POWELLS OR 3334 100-YEAR 1520.00 665.20 675.13 675.35 0.002223 4.40 582.40 185.77 0.28 POWELLS OR 3334 500-YEAR 2170.00 665.20 676.09 676.35 0.002434 4.98 769.55 205.82 0.30 POWELLS OR 3284 10-YEAR 850.00 663.00 670.90 667.42 671.45 0.008421 5.98 143.39 22.79 0.39 POWELLS OR 3284 50-YEAR 1350.00 663.001 674.46 668.88 674.78 0.0039581 5.01 427.771 163.04 0.27 POWELLS OR 3284 100-YEAR 1520.00 663.00 674.89 669.34 675.19 0.003807 5.05 499.16 171.36 0.27 POWELLS OR 3284 500-YEAR 2170.00 663.00 675.831 671.05 676.16 0.004304 5.66 668.44 189.65 0.29 POWELLS OR 3260 Culvert POWELLS OR 3186 10-YEAR 850.00 662.37 667.62 668.33 0.018142 6.80 128.35 45.24 0.66 POWELLS OR 3186 50-YEAR 1350.00 662.37 668.58 669.59 0.018671 8.17 178.00 59.30 0.70 POWELLS OR 3186 100-YEAR 1 1520.00 662.37 668.77 668.10 669.91 0.020159 8.74 189.60 62.41 0.73 POWELLS OR 3186 500-YEAR 2170.00 662.37 669.23 668.96 671.061 0.028661 11.13 220.76 77.921 0.89 POWELLS OR 3166 10-YEAR 850.00 662.21 667.43 667.88 0.014395 5.40 157.26 61.65 0.60 POWELLS OR 3166 50-YEAR 1350.00 662.21 668.53 669.01 0.012999 5.55 245.02 90.54 0.58 POWELLS OR 3166 100-YEAR 1520.00 662.21 668.77 669.28 0.012598 5.76 266.56 92.02 0.58 POWELLS OR 3166 500-YEAR 2170.00 662.21 669.41 670.11 0.013396 6.74 338.77 152.19 0.62 POWELLS OR 3136 10-YEAR 850.00 661.76 667.09 667.49 0.011096 5.13 171.12 66.81 0.54 POWELLS OR 3136 50-YEAR 1350.00 661.76 668.15 1 668.68 0.009614 5.89 248.82 99.69 0.53 POWELLS OR 3136 100-YEAR 1520.00 661.76 668.35 668.94 0.010162 6.27 270.72 117.79 0.54 POWELLS OR 3136 500-YEAR 2170.00 661.761 668.77 667.78 669.68 0.014203 7.90 328.63 149.94 0.65 POWELLS OR 3026 10-YEAR 850.00 659.73 665.19 665.91 0.018258 6.82 124.70 40.25 0.68 POWELLS OR 3026 50-YEAR 1350.00 659.73 666.09 665.38 667.12 0.020722 8.20 180.58 121.37 0.75 POWELLS OR 3026 100-YEAR 1520.00 659.73 666.41 665.66 667.41 0.018806 8.20 226.90 157.90 0.72 POWELLS OR 3026 500-YEAR 2170.00 659.73 667.25 667.25 668.13 0.014942 8.24 414.07 276.51 0.66 POWELLS OR 2965 10-YEAR 850.00 659.39 664.38 1 664.90 0.012510 5.83 145.82 47.75 0.58 POWELLS OR 2965 50-YEAR 1350.00 659.39 664.94 664.16 665.86 0.018098 7.77 186.69 102.98 0.71 POWELLS OR 2965 100-YEAR 1520.00 659.391 664.99 664.42 666.12 0.021786 8.61 192.05 105.98 0.78 POWELLS OR 2965 500-YEAR 2170.00 659.39 666.12 666.12 666.98 0.013458 8.07 414.81 295.90 0.64 POWELLS OR 2860 10-YEAR 860.00 658.55 663.18 663.63 0.012296 5.84 200.84 157.06 0.57 POWELLS OR 2860 50-YEAR 1370.00 658.55 663.96 663.35 664.39 0.010454 6.211 91.71 331.18 0.54 POWELLS OR 28W 100-YEAR 1530.00 658.55 664.11 664.52 0.0101081 6.25 440.051 334.42 0.54 POWELLS OR 2860 500-YEAR 2190.00 658.55 664.63 665.001 0.00 1201 6.411 616.341 344.85 0.52 HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS OR (Continued) Reach Riser Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Froude # Chi (cfs) (ft) (ft) (ft) (ft) (Rift) (ft/s) (sq ft) (ft) POWELLS OR 2365 10-YEAR 870.00 649.70 655.69 655.69 656.27 0.019130 8.01 243.85 184.88 0.64 POWELLS OR 2365 50-YEAR 1390.00 649.70 656.13 656.13 656.84 0.024738 9.64 327.90 200.57 0.73 POWELLS OR 2365 100-YEAR 1550.00 649.70 656.25 656.25 656.99 0.025736 9.99 353.16 205.06 0.75 POWELLS OR 2365 500-YEAR 2200.00 649.70 656.67 656.67 657.53 0.029630 11.26 443.06 220.28 0.82 POWELLS OR 1810 10-YEAR 1 880.00 641.001 646.00 645.88 646.22 0.0129601 5.87 327.191 335.75 0.52 POWELLS OR 1810 50-YEAR 1410.00 641.00 646.51 646.09 646.70 0.0103331 5.67 509.69 381.79 0.47 POWELLS OR 1810 100-YEAR 1570.00 641.00 646.631 646.19 646.81 0.010193 5.73 554.83 392.34 0.47 POWELLS OR 1810 500-YEAR 2230.00 641.00 647.05 646.45 647.25 0.009861 5.97 727.13 429.51 0.47 POWELLS CR 1290 10-YEAR 890.00 633.30 638.02 638.02 638.32 0.018001 6.80 303.82 379.94 0.62 POWELLS OR 1290 50-YEAR 1430.00 633.30 638.22 638.22 638.64 0.025453 8.38 385.75 407.87 0.74 POWELLS OR 1290 100-YEAR 1580.00 633.30 638.29 638.29 638.71 0.026419 8.63 410.80 416.03 0.75 POWELLS OR 1290 500-YEAR 2250.00 633.30 638.53 638.53 639.01 0.029121 9.42 518.42 449.42 0.80 POWELLS OR 1111 10-YEAR 900.00 630.60 635.09 635.17 0.007030 4.22 544.21 701.64 0.39 POWELLS OR 1111 50-YEAR 1440.00 630.60 635.45 635.52 0.005556 4.00 801.22 708.57 0.35 POWELLS OR 1111 100-YEAR 1590.00 630.60 635.53 635.60 0.005513 4.03 855.99 710.04 0.35 POWELLS OR 1111 500-YEAR 2260.00 630.60 635.81 635.89 0.005798 4.32 1053.25 715.29 0.36 POWELLS OR 1061 10-YEAR 900.00 629.90 634.76 634.00 634.91 0.003861 3.95 508.45 586.09 0.33 POWELLS OR 1061 50-YEAR 1440.00 629.90 635.00 634.68 635.22 0.006024 5.11 662.97 700.08 0.42 POWELLS OR 1061 100-YEAR 1 1590.00 629.90 635.00 634.76 635.26 0.0073831 5.65 661.531 700.04 0.47 POWELLS OR 1061 500-YEAR 2260.00 629.901 635.33 635.121 635.56 0.006MI 5.75 892.53 706.33 0.46 POWELLS OR 1040 Culvert POWELLS OR 1019 10-YEAR 900.00 629.20 633.79 633.79 634.16 0.009130 5.61 331.08 560.38 0.50 POWELLS OR 1019 50-YEAR 1440.00 629.20 634.16 634.16 634.46 0.008958 5.89 572.99 701.10 0.50 POWELLS OR 1019 100-YEAR 1590.00 629.20 634.21 634.21 634.53 0.009584 6.14 606.65 702.17 0.52 POWELLS OR 1019 500-YEAR 2260.00 629.20 634.40 634.40 634.77 0.011908 7.04 740.51 706.45 0.58 POWELLS OR 969 10-YEAR 900.00 628.401 632.74 632.84 0.009595 4.68 463.82 605.05 0.45 POWELLS OR 969 50-YEAR 1440.00 628.40 632.97 632.74 633.10 0.0109931 5.24 607.81 617.53 0.48 POWELLS OR 969 100-YEAR 1590.00 628.40 633.01 632.75 633.15 0.011972 5.51 630.91 619.51 0.50 POWELLS CR 969 500-YEAR 2260.00 628.40 633.26 632.90 633.43 0.012185 5.80 789.49 632.94 0.51 POWELLS OR 185 10-YEAR 920.00 616.00 620.30 620.00 621.59 0.029340 9.10 101.54 33.60 0.87 POWELLS OR 185 50-YEAR 1470.00 616.00 622.00 621.30 623.28 0.017614 9.26 176.00 54.00 0.73 POWELLS OR 185 100-YEAR 1620.00 616.00 622.50 621.61 623.71 0.014932 9.081 204.50 60.00 0.68 HEC-RAS Plan: PROPOSED River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach Riser Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Val Chnl Flow Area Top Width Fronde # Chl (cfs) (fl) (fl) (fl) (fl) (fvtt) (fvs) (sq fi) (fi) POWELLS CR 1185 500-YEAR 1 2290.001 616.001 624.001 622.811 625.181 0.0114141 9.311 308.001 78.001 0.62 Floodway Profile Plot Powells Creek Proposed Plan: 1) PROP FLDVVY 9/13/2021 800- Legend Ground Main Channel Distance (ft) You created this PIDIF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Floodway Cross Sections Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 07 .07 a10 0 0 Legend ---- - -- ---�----- 805 EG Floodway EG 100-Year 800 WS Floodway `oV Cdt Floodway 795 > WS 100-Year m 790 Cril 100-Year ............................................................................._._._._._._._._. Ground • 785 Bank Ste Encroachment 780 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 07 i.07 800 6 6 Legend 795 -------------------------- EG Floodway WS Floodway 790 EG 100-Year +C o WS 100-Year > 785 Ground m w 780 • Bank Ste Encroachment 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 07 800 0 Legend 6 EG Floodway 795 WS Floodway 790 EG 100-Year WS 100-Year 785 Crit 100-Year ......................................... m Crit Floodway W � 780 Ground Ineg 775 Bank Ste Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Railroad Ave. - Route 788 07 i.07 800 0 Legend 6 EG Floodway 795 WS Floodway 790 ------------------------ EG 100-Year WS 100-Year 785 Crit Floodway m Crit 100-Year w 780 Ground • Ineg 775 Bank St, Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Railroad Ave. - Route 788 1 J .1 800 0 Legend 6 EG Floodway 795 ....................... '\ EG 100-Year 790 WS 100-Year WS Floodway c....................a.................... 785 Crit Floodway m Crit 100-Year w 780 Ground • Ineff 775 Bank Sta Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 J .1 800 0 Legend 6 EG Floodway 795 EG 100-Year 790 WS 100-Year WS Floodway 785 Crit 100-Year ......................................... m Crit Floodway W � 780 Ground • ............... ..... r Ineg 775 Bank St, Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 800 0 6 Legend 795 --------------------------- EG 100-Year .......................... EG Floodway 790 WS 100-Year +K o WS Floodway .W 785 > Ground m w 780 Ban*k Sta Encroachment 775 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 J .1 800 0 Legend 6 EG 100-Year 795 --------•-------- EG Floodway 790 WS Floodway WS 100-Year 785 Cdt 100-Year ......................................... m Cdt Floodway W • 780 Ground Ineff 775 Bank Sta Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 CSX Railway 1 1 800 0� Legend 2 5 ----- -------- ------- EG 100-Year 795 ----------- •-------- EG Floodway 790 WS Floodway WS 100-Year 785 --------------------------------------------- ____4___ __________________ .................... I.......... ........ .. Crit Floodway m Crit 100-Year w 780 Ground • Inefi 775 Bank Sta Encroachment 770 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 CSX Railway .075 _1 800 0 Legend 2 EG 100-Year 795 ----------- •-------- EG Floodway, 790 Crit 100-Year WS Floodway 0 785 WS 100-Year °i Crit Floodway W _._._._._.__......_._._._._._._._._._._._._._._._...-._._._._._._._._._...._._._._._._._._._._.._-_----_._ 780 Ground • Inefi 775 Bank St, Encroachment 770 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 790 Legend ------------------------ EG 100-Year 785 - ------•-------- EG Floodway WS Floodway 780 ........ ............ a........... Crit Floodway c o._._._._._._._._._._._._._._._._. ._._.r------- ..._._._._._._._._._._._._._. WS 100-Year y 775 Crit - ear • Ground • Ineff 770 � Bank Sta Encroachment 765 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 1 790 0 Legend -------------------------- EG 100-Year 785 ------------ a............ EG Floodway .................I...................... Crit 100-Year 780 c WS 100-Year 0 WS Floodway w775 .............................................................................................. ...................... ................. Crit Floodway Ground 770 • Bank Sta Encroachment 765 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip ip w 1700 1800 Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1900 2000 2100 2200 Station (ft) Poviells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 0 6 2300 1800 1900 2000 2100 2200 2300 2400 Station (ft) EG 100-Year EG Floodway Cril 100-Year WS 100-Year WS Floodway ............................................. Cdt Floodway Ground Bank Ste Encroachment 2400 Legend --------------------------- EG 100-Year .......................... EG Floodway WS Floodway WS 100-Year Ground • Bank Ste Encroachment 2500 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 785 Legend ------------------------ EG 100-Year 780 ....................... EG Floodway 775 WS Floodway WS 100-Year 770 Crit Floodway m Crit 100-Year w--------------- ------ ------ ........_._._._._._. 765 Ground • ..........._..... IneB 760 Bank Sta Encroachment 755 1700 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Cling Lane - Route 1226 785 Legend ------------------------ EG 100-Year 780 ....................... EG Floodway 775 Crit 100-Year WS Floodway 0 770 WS 100-Year m Crit Floodway W Ground • 765 IneB 760 Bank St, Encroachment 755 1700 1800 1900 2000 2100 2200 2300 2400 2500 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip ip W 1800 Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Cling Lane - Route 1226 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 2400 0 1900 2000 2100 2200 2300 2400 Station (ft) EG 100-Year --------------------- EG Floodway Cdt 100-Year ...................................... Cdt Floodway WS 100-Year WS Floodway • Ground • IneR • Bank Sta Encroachment 2500 Leg•na ----------------------- EG Floodway EG 100-Year Cdt 100-Year .................1................... Cdt Floodway Ground • Inefi • Bank St, Encroachment 2500 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip ip W 1800 1900 1800 Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 0 6 1900 2000 2100 Station (ft) 2400 2200 ----------------------- EG Floodway WS Floodway Crit Floodway --------------------------- EG 100-Year WS 100-Year Cril 100-Year Ground Bank Ste Encroachment 2500 EG 100-Year ......................... EG Floodway WS Floodway .......................................... Crit 100-Year Ground Bank Sta Encroachment 2300 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 760 0 6 Legend 755 EG 100-Year EG Floodway 750 WS Floodway o Cdt Floodway 745 > WS 100-Year m 740 _ __._._._._._._._._._-_._._._._._._._._._ Cril 100-Year Ground • 735 Bank Ste Encroachment 730 1600 1700 1800 1900 2000 2100 2200 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 r 750 6 6 Legend 745 EG 100-Year EG Floodway 740 WS Floodway v`o Cdt Floodway 735 > WS 100-Year m W.................+...................... 730 ......................................................................................................... r -ear Ground • 725 Bank Ste Encroachment 720 1700 1800 1900 2000 2100 2200 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 J I� 745 6 6 Legend 740 EG 100-Year 735 EG Floodway WS Floodway V........................................ 730 `o Cdt Floodway 725 > WS 100-Year m .................+...................... w 720 Cril 100-Year 715 Ground • 710 Bank Ste Encroachment 705 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 _I .1 730 0 6 Legend 725 EG 100-Year EG Floodway 720 WS Floodway `ov Cdt Floodway 715 > WS 100-Year m 710 ------------ _ _- _ _- _ _- _ _- _ _.__- _ _- _ _- _ _- _ _ Crit 100-Year Ground • 705 Bank Ste Encroachment 700 1700 1800 1900 2000 2100 2200 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 ------------------------ 700 Ground Ineff 695 Bank Ste Encroachment 690 Poviells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 ----------------------- ------------------------ Ground Ineff Bank Sta Encroachment 690 Station (ft) You created this PIDIF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 710 Legend ------------------------ EG 100-Year 705 • ik ----------------------- .EG Floodway Crit 100-Year WS Floodway 0 700 WS 100-Year m Crit Floodway W Ground 695 Ineg • Bank Sla Encroachment 690 1800 1900 2000 2100 2200 2300 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 r .06 715 Legend ....................... EG Floodway 710 WS Floodway ------------------------ EG 100-Year 705 WS 100-Year 700 Crit Floodway m Crit 100 -Yea r w Ground • 695 ----- ------ ------ Inefi 690 • Bank Sla Encroachment 685 1800 1850 1900 1950 2000 2050 2100 2150 2200 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip ip W 1800 1850 1800 1900 Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 'I" .06)i( .1 1900 1950 2000 2050 2100 2150 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 -I- .06 -I- .1 2000 2100 Station (ft) 2200 Legend -----------•----------- EG Floodway ------------------------ EG 100-Year WS Floodway ................................ .. Crit Floodway WS 100-Year Crit 100-Year Ground • Ineg • Bank Sta Encroachment EG Floodway EG 100-Year WS Floodway .......................................... Crit 100-Year Ground Bank Sta Encroachment 2300 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) ip 1600 ip w Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 0 �--.07- 6 1700 1800 1900 2000 2100 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1600 1 1800 Station (ft) 2000 .07 2200 EG 100-Year EG Floodway Cril 100-Year WS 100-Year WS Floodway ............................................. Crit Floodway Ground Bank Ste Encroachment 2200 Legend ------------`------------ EG Floodway WS Floodway EG 100-Year WS 100-Year Ground • Bank Ste Encroachment 2400 You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 .1 i.07 710 O Legend 6 ----------- I---------- EG Floodway 700 WS Floodway ------------------------ EG 100-Year 690 WS 100-Year Cdt 100-Year ......................................... 680 Cdt Floodway ty • Ground • Inefi 670 � Bank Ste Encroachment 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Jarmins Gap Road - Route 691 r .1 _ i .07 710 o Legend 6 EG Floodway 700 WS Floodway ------------------------ EG 100-Year 690 WS 100-Year c...............a.................... Cdt Floodway w 680 nt I 00-Year • ------ -- Ground Ineg 670 Bank St, Encroachment 660 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Jarmins Gap Road - Route 691 .07 'I4.06) it .1 01 695 Legend -------- -------- 690 EG Floodway WS Floodway 685 - ----------------------- EG 100-Year +C 680 WS 100-Year m m' 675 ---------------- ---- ------------------------ Cdt Floodway Crit 100-Year 670 ' Ground • 665 Bank Ste Encroachment 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 REVISED CROSS SECTION r.07 _I_.06�.1 695 Legend 690 ------------ `------------ EG Floodway --------------------------- EG 100-Year 685 WS Floodway +C C 680 WS 100-Year a'o 675 CrR 100-Year w ' Ground 670 __,...... • Bank Ste 665 Encroachment 660 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 NEW SURVEY CROSS SECTION .07 _�_ .06.1� 695 Legend 690 ------------`------------ EG Floodway EG 100.Year 685 WS Floodway +C C 680 WS 100.Year 675 Ground w • Bank Sta 670 Encroachment 665 660 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 REVISED CROSS SECTION .07 _�_ .06 .1 690 Legend 685 ------------`------------ EG Floodway --------------------------- EG 100-Year 680 WS Floodway +C `o WS 100.Year > 675 Ground m w 670 • Bank Sta Encroachment 665 660 1400 1600 1800 2000 2200 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 NEW SURVEY CROSS SECTION .07 _(.06) i( .1 690 Legend 685 ------------`------------ EG Floodway --------------------------- EG 100-Year 680 WS Floodway `C 675 WS 100-Year a'o 670 Grit 100-Year w ......_........................................................... ' Ground 665 +....... Bank Sta 660 Encroachment 655 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 REVISED CROSS SECTION .07 __ .06 )i( .1 685 Legend 680 ------------`------------ EG Floodway EG 100-Year 675 WS Floodway `o WS 100-Year 670 ..................+......_........... > Grit 100-Year m W_______________________________ 665 1 ________________________________ ------._.-- • Ground � Bank Sta 660 Encroachment 655 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 REVISED CROSS SECTION .07 'kopi( .1 685 Legend 680 ------------`------------ EG Floodway WS Floodway 675 EG 100-Year `o WS 100-Year > 670 Ground m W 665 ------------- -------- ---+---------- • Bank Sta Encroachment 660 655 1400 1600 1800 2000 2200 2400 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 1 675 0� 6 Legend 670 ------------ ----------- EG Floodway EG 100-Year 665 WS Floodway `oV Cdt Floodway 660 > WS 100-Year m 655 Crit 100-Year Ground • 650 Bank Sta Encroachment 645 1500 1600 1700 1800 1900 2000 2100 2200 2300 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 l6r .07 665 6 Legend - - - - - -- ----�----- EG Floodway 660 WS Floodway EG 100-Year 655 ................1...................... `oV Cdt Floodway > WS 100-Year w 650 Cril 100-Year -_ _-- -- Ground 645 • Bank Ste Encroachment 640 1600 1800 2000 2200 2400 2600 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 .070 655 6 Legend ------------ ----------- EG Floodway 650 EG 100-Year WS Floodway c648 ................•...................... `oV Cdt Floodway WS 100-Year > w 640 Crit 100-Year Ground 635 • Bank Ste Encroachment 630 1900 2000 2100 2200 2300 2400 2500 2600 2700 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 � � .07 655 6 6 Legend -------------------------- EG Floodway 650 WS Floodway -------------------------- EG 100-Year 645 o WS 100-Year > Ground °i w 640 • Bank Sta .......................................... Encroachnwd 635 630 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 1 � i( .07 01 655 0 6 Legend EG Floodway 650 WS Floodway 645 ------------------------ EG 100-Year WS 100-Year 640 Cdt 100-Year m ......................................... Cdt Floodway W 635 .." ..."" """""""""" Ground • IneR 630 • Bank Sta Encroachment 625 1800 2000 2200 2400 2600 2800 3000 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Cathaross Lane 1 .07 655 0 Legend 6 EG Floodway 650 WS Floodway 645 ------------------------ EG 100-Year WS 100-Year c 0 640 Crit Floodway � m Cdt 100-Year w 635 Ground Ineff 630 • Bank Sta Encroachment 625 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 Cathaross Lane 07 4 .07 660 0 Legend 6 655 EG Floodway WS Floodway 650 ------------------------ EG 100-Year 645 WS 100-Year c ........ Cdt Floodway d 640 Cdt 100-Year w Ground 635 ............................. Ineff • 630 Bank St, Encroachment 625 Isoo 1800 2000 2200 2400 2600 2800 3000 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 0 7 .070 sso 6 Legend ....................... 655 EG Floodway ------------------------ EG 100-Year 650 WS Floodway 645 Crit Floodway c 0 - WS 100-Year 640 Cdt 100-Year w Ground 635 ----------- • Ineg • 630 Bank Sta Encroachment 625 1600 1800 2000 2200 2400 2600 2800 3000 Station (ft) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 .07�. .07 6551. 6 Legend 650 ------------`------------ EG Floodway WS Floodway 645 EG 100-Year +K o WS 100-Year 640 11111 > Cdt 100-Year m w 635 � Ground • ---- Bank Sta 630 Encroachment 625 1600 1800 2000 2200 2400 2600 2800 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Powells Creek Proposed Plan: 1) PROP FLDWY 9/13/2021 .1 _I_ .06 .07 645 Legend ------�-------- 640 EG Floodway EG 100-Year 635 WS Floodway c c WS 100-Year 630 .................+...................... > Crit 100-Year d........... .. 625 Cdt Floodway Ground 620 Bank Ste Encroachment 615 1700 1800 1900 2000 2100 2200 2300 2400 Station (ft) You created this PDF from an application that is not licensed to print to novaPDF printer (http:/Avww.novapdf.com) Floodway Summary Table HEC-RAS Plan: PROP FLDWY River: POWELLS CREEK Reach: POWELLS CR Reach River Ste Profile 0 Total Min Ch El W.S. Elev Cril W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chi (CIS) (ft) (ft) (ft) (ft) (ft/ft) MIS) A ft) (ft) POWELLS CR 7960 100-Year 1350.00 780.50 786.36 786.36 786.99 0.026172 9.02 265.38 176.70 0.73 POWELLS CR 7960 Floodway 1350.00 780.50 786.39 786.39 787.08 0.026874 9.19 249.59 150.00 0.74 POWELLS CR 7755 100-Year 1360.00 773.70 786.12 786.13 0.000142 1.20 1770.47 344.07 0.06 POWELLS CR 7755 Floodway 1360.00 773.70 786.16 786.18 0.000236 1.56 1135.23 150.00 0.08 POWELLS CR 7705 100-Yea 1360.00 772.10 786.11 777.99 786.12 0.000088 1.15 1998.23 343.89 0.05 POWELLS CR 7705 Floodway 1360.00 772.10 786.15 777.99 786.17 0.000123 1.36 1361.33 150.00 0.06 POWELLS CR 7675 Culvert POWELLS CR 7645 100-Yea 1360.00 771.10 786.09 777.05 786.10 0.000126 1.44 2085.07 343.06 0.07 POWELLS CR 7645 Floodway 1360.00 771.10 786.06 777.05 786.12 0.000382 2.50 981.13 135.13 0.12 POWELLS CR 7632 100-Yea 1360.00 770.90 786.09 1 786.10 0.0001261 1.48 2079.681 342.98 0.07 POWELLS CR 7632 Floodway 1360.00 770.90 786.07 786.10 0.000168 1.71 1426.79 150.00 0.08 POWELLS CR 7619 100-Year 1360.00 770.60 785.93 777.00 786.06 0.000634 3.29 519.06 337.48 0.15 POWELLS CR 7619 Floodway 1360.00 770.60 785.93 777.00 786.06 0.000634 3.29 519.06 150.00 0.15 POWELLS CR 7575 Bridge POWELLS CR 7530 100-Year 1360.00 769.901 776.00 776.00 777.78 0.028210 11.33 147.94 216.90 0.87 POWELLS CR 7530 Floodway 1360.00 769.90 776.00 776.00 777.78 0.028193 11.33 147.971 44.00 0.87 POWELLS CR 7480 100-Yea 1360.00 768.40 774.87 774.87 775.65 0.021928 9.78 318.94 187.36 0.73 POWELLS CR 7480 Floodway 1360.00 768.40 774.83 774.83 775.59 0.021634 9.66 299.16 150.00 0.72 POWELLS CR 7300 100-Yea 1370.00 763.00 769.82 769.82 770.62 0.021928 9.79 318.29 188.48 0.72 POWELLS CR 7300 Floodway 1370.00 763.00 769.79 769.79 770.57 0.021224 9.61 300.03 150.00 0.70 POWELLS CR 7045 100-Year 1390.001 758.00 765.641 766.11 0.007000 6.71 397.07 161.27 0.46 POWELLS CR 7045 Floodway 1390.00 758.00 765.67 766.11 0.006631 6.55 374.58 120.00 0.45 POWELLS CR 6995 100-Yea 1390.00 757.00 765.35 762.02 765.83 0.004400 5.87 274.01 151.50 0.36 POWELLS CR 6995 Floodway 1390.00 757.00 765.35 762.02 765.83 0.004400 5.87 274.01 44.00 0.36 POWELLS CR 6960 Culvert HEC-RAS Plan: PROP FLDWY River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile 0 Total Min Ch El W.S. Elev Cril W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chi (clS) (ft) (ft) (ft) (ft) (ft/ft) MIS) A ft) (ft) POWELLS CR 6925 100-Year 1390.00 756.10 761.17 760.69 762.56 0.022647 9.89 160.48 306.69 0.79 POWELLS CR 6925 Floodway 1390.00 756.10 762.01 760.68 762.98 0.012879 8.30 201.90 44.00 0.61 POWELLS CR 6875 100-Year 1390.00 754.60 760.45 760.45 760.94 0.024311 8.76 397.42 299.45 0.71 POWELLS CR 6875 Floodway 1390.00 754.60 761.07 761.07 762.04 0.029797 10.53 242.48 100.00 0.80 POWELLS CR 6490 100-Yea 1400.00 743.00 750.34 750.34 751.36 0.022219 10.43 266.36 122.06 0.73 POWELLS CR 6490 Floodway 1400.00 743.00 750.44 750.44 751.35 0.019850 9.97 278.77 122.06 0.69 POWELLS CR 6120 100-Year 1410.00 733.00 740.24 740.24 741.16 0.021150 10.08 290.08 140.60 0.71 POWELLS CR 6120 Floodway 1410.00 733.00 740.32 740.32 741.15 0.019378 9.73 300.43 140.61 0.68 POWELLS CR 5735 100-Yea 1430.00 723.00 730.03 730.03 730.82 0.020617 9.72 329.40 180.48 0.70 POWELLS CR 5735 Floodway 1430.00 723.00 730.10 730.10 730.81 0.018710 9.34 342.30 180.48 0.67 POWELLS CR 5190 100-Year 1450.00 708.50 715.73 715.72 716.94 0.023384 11.09 242.97 94.55 0.78 POWELLS CR 5190 Floodway 1450.00 708.50 715.83 715.83 716.93 0.021352 10.71 251.85 94.55 0.74 POWELLS CR 4885 100-Yea 1460.00 701.20 708.61 708.61 709.79 0.023488 11.01 257.40 111.65 0.76 POWELLS CR 4885 Flo0dway 1460.00 701.20 708.77 708.77 709.77 0.019987 10.32 274.81 111.70 0.71 POWELLS CR 4345 100-Year 1460.00 692.34 697.57 696.06 697.70 0.003780 4.11 684.95 320.04 0.34 POWELLS CR 4345 Floodway 1460.00 692.34 698.02 696.04 698.34 0.005593 5.33 388.45 90.00 0.42 POWELLS CR 4253 100-Yea 1460.00 690.00 697.49 693.40 697.53 0.000690 2.29 1128.87 413.38 0.16 POWELLS CR 4253 Floodway 1460.00 690.00 697.68 694.62 697.94 0.003081 4.92 444.59 78.00 0.33 POWELLS CR 4149 Bridge POWELLS CR 4064 100-Year 1460.00 686.97 691.76 691.76 692.85 0.025987 9.90 228.92 211.32 0.85 POWELLS CR 4064 Floodway 1460.00 686.97 692.54 692.54 694.37 0.027503 11.41 160.77 48.00 0.89 POWELLS CR 3950 100-Yea 1460.00 684.16 688.11 687.91 688.78 0.022977 7.89 299.34 169.48 0.77 POWELLS CR 3950 Floodway 1460.00 684.16 688.63 688.63 690.09 0.029887 9.94 169.28 70.00 0.90 POWELLS CR 3550 100-Yea 1510.00 670.50 678.44 678.44 679.57 0.022823 10.74 263.29 117.38 0.73 POWELLS CR 3550 Floodway 1510.00 670.50 678.40 678.40 679.51 0.022759 10.68 252.54 99.75 0.72 POWELLS CR 3334 100-Year 1520.00 665.201 675.13 675.35 0.002223 4.40 582.40 185.77 0.28 HEC-RAS Plan: PROP FLDWY River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile 0 Total Min Ch El W.S. Elev Cril W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chi (cls) (ft) (ft) (ft) (ft) (ft/ft) MIS) (gQ ft) (ft) POWELLS CR 3334 Floodway 1520.00 665.20 675.79 676.01 0.001885 4.28 508.83 95.00 0.26 POWELLS CR 3284 100-Year 1520.00 663.00 674.89 669.34 675.19 0.003807 5.05 499.16 171.36 0.27 POWELLS CR 3284 Floodway 1520.00 663.00 675.60 669.32 675.88 0.003171 4.80 442.71 85.00 0.25 POWELLS CR 3260 Culvert POWELLS CR 3186 100-Year 1520.00 662.37 668.77 668.10 669.91 0.020159 8.74 189.60 62.41 0.73 POWELLS CR 3186 Floodway 1520.00 662.37 668.82 669.95 0.019517 8.67 188.33 54.48 0.72 POWELLS CR 3166 100-Year 1520.00 662.21 668.77 669.28 0.012598 5.76 266.56 92.02 0.58 POWELLS CR 3166 Floodway 1520.00 662.21 668.85 669.34 0.011590 5.62 273.16 90.00 0.56 POWELLS CR 3136 100-Year 1520.00 661.76 668.35 668.94 0.010162 6.27 270.72 117.79 0.54 POWELLS CR 3136 Floodway 1520.00 661.761 W8.50 1 669.03 0.0087791 5.96 272.731 75.00 0.51 POWELLS CR 3026 100-Year 1520.00 659.73 666.41 665.66 667.41 0.018806 8.20 226.90 157.90 0.72 POWELLS CR 3026 Floodway 1520.00 659.73 666.52 667.60 0.019146 8.36 182.60 50.00 0.73 POWELLS CR 2965 100-Year 1520.00 659.39 664.99 664.42 666.12 0.021786 8.61 192.05 105.98 0.78 POWELLS CR 2965 Floodway 1520.00 659.39 665.83 666.60 0.011258 7.08 218.17 50.00 0.58 POWELLS CR 2860 100-Year 1530.00 658.55 664.11 664.52 0.010108 6.25 440.05 334.42 0.54 POWELLS CR 2860 Floodway 1530.00 658.55 664.67 665.43 0.011746 7.33 237.45 60.00 0.59 POWELLS CR 2365 100-Year 1550.00 649.70 656.25 656.25 656.99 0.025736 9.99 353.16 205.06 0.75 POWELLS CR 2365 Floodway 1550.00 649.70 656.30 656.30 657.13 0.026807 10.25 308.19 145.20 0.77 POWELLS CR 1810 100-Year 1570.00 641.00 646.63 646.19 646.81 0.010193 5.73 554.83 392.34 0.47 POWELLS CR 1810 Floodway 1570.00 641.00 647.51 646.74 647.83 0.010177 6.43 396.01 150.00 0.48 POWELLS CR 1290 100-Year 1580.00 633.30 638.29 638.29 638.71 0.0264191 8.63 410.80 416.03 0.75 POWELLS CR 1290 Floodway 1580.00 633.30 638.69 638.69 639.42 0.029061 9.65 272.13 150.00 0.80 POWELLS CR 1111 100-Year 1590.00 630.60 635.53 635.60 0.005513 4.03 855.99 710.04 0.35 POWELLS CR 1111 Floodway 1590.00 630.60 636.30 636.50 0.007528 5.29 477.65 200.00 0.42 POWELLS CR 1061 100-Year 1590.00 629.90 635.00 634.76 635.26 0.007383 5.65 661.53 700.04 0.47 POWELLS CR 1061 Floodway 1590.00 629.90 636.13 634.61 636.27 0.002705 3.96 W4.40 191.00 0.29 HEC-RAS Plan: PROP FLDWY River: POWELLS CREEK Reach: POWELLS CR (Continued) Reach River Sta Profile 0 Total Min Ch El W.S. Elev Cril W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chi (cfa) (ft) (ft) (ft) (ft) (Rift) (ft1s) (SQ ft) (ft) POWELLS CR 1040 Culvert POWELLS CR 1019 100-Year 1590.00 629.20 634.21 634.21 634.53 0.009584 6.14 606.65 702.17 0.52 POWELLS CR 1019 Floodway 1590.00 629.20 634.35 634.25 634.98 0.014170 7.62 329.06 188.36 0.63 POWELLS CR 969 100-Yea 1590.00 628.40 633.01 632.75 633.15 0.011972 5.51 630.91 619.51 0.50 POWELLS CR 969 Floodway 1590.00 628.40 633.71 634.08 0.016467 7.25 368.79 200.00 0.61 POWELLS CR 185 100-Year 1620.00 616.00 622.50 621.63 623.71 0.014932 9.08 204.50 60.00 0.68 POWELLS CR 185 Floodway 1620.00 616.00 622.70 621.63 623.79 0.012945 8.66 216.50 60.00 0.64