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HomeMy WebLinkAboutWPO201800030 Calculations 2018-07-24CHARLOTTESVILLE ALBEMARLE SPCA WPO 201800030 J U LY 20, 2018 STORMWATER MANAGEMENT CALCULATIONS PACKAGE PREPARED BY: John Wilson 608 Preston Ave, Suite 200 Charlottesville VA 22903 434-327-1684 John.wilson@timmons.com www.timmons.com TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 Table of Contents 1. Project Summary .................................................................................................................................... 1 2. Maintenance Items..................................................................................................................................3 3. Stormwater Model...................................................................................................................................4 4. Stormwater Report.................................................................................................................................. 6 Table of Figures Figure 1 - Grading and Drainage Plan............................................................................................................... 2 Figure 2 — Detention Pipe Maintenance............................................................................................................. 3 Figure 3 — Stormceptor Maintenance Depth...................................................................................................... 3 Figure4 - Model schematic............................................................................................................................... 5 Charlottesville Albemarle SPCA May 4, 2018 1. Project Summary The site is currently an animal shelter and parking lot. The proposed development includes additions, parking lots, and associated infrastructure/site work. Limits of Clearing and grading is 2.5 Acres. The site has three major outfall locations, these are a conveyance system in Berkmar Drive, a 30" RCP culvert, and the existing stormwater management system on site. The three outfalls ultimately discharge into a manmade ditch that drains to Keglers Pond. The downstream condition beyond the site outfall is a series of manmade stormwater conveyance systems. The proposed limit of analysis is the existing stormwater management pond (Referenced as the Regional Keglers Pond), which was studied under the Berkmar drive north extension existing "Keglers: Detention Basin Analysis" by Albemarle County Engineering Department (March 1994). The conveyance system from the discharge culvert through the manmade channel into the pond was recently analyzed by Harvest Moon Phase 1 (WPO 201600011) to demonstrate adequacy of the conveyance systems to Keglers Pond. The proposed outfall condition reduces the 1 and 10 year peak discharge. The information contained within this report is provided to supplement the design, calculations, narratives, and maintenance information provided with the associated site plan. Page 1 of 6 TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 Figure I - Grading and Drainage Plan Page 2 of 6 TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 2. Maintenance Items The stormwater management systems (Stormceptor & Underground detention) shall be inspected quarterly for the first year after installation to establish a long term maintenance schedule. It is recommended that the stormceptor unit be cleaned via VAC Truck once the sediment in the unit has reached 15% of the Stormceptor units total storage (Refer to Figure below). Suggested detention pipe maintenance schedule is also shown below. Inspection Activities Sugpcsted Schedule • Alter several storm events or an extreme storm event, inspect for: signs of clMing of the inlet or outlet structures and sediment accumulation. As Needed • Inspect for: trash and debris; clogging of the outlet structures and any pilot channels; excessive erosion; sediment accumulation in the basin and inietloutlet structures; tree growth on dam or embankment; the presence of burrowing animals; standing water where there should be Semi-annually none; vigor and densily of the grass lurfon the basin side slopes and floor; differential settlement; cracking; leakage; and slope stabRi# . • Inspect that the outlet structures, pipes, and downstream and pilot channels are free ofdcbris and are operational. • Note signs ofpollution, such as oil sheens, discolored water, or unpleasant odors, Annu,illE • Check for sediment accumulation in the facility. ■ Check for proper operation of control gates, valves or other mechanical devices. Maintenance Activities Suggested Schedule • perform structural repairs to inlet and outlets Monthly or as needed • Clean and remove debris from inlet and outlet structures. • Repair damage to inlet and outlet structures, control gates, valves, other mechanical devices; rcpair undercut or eroded areas. As Needed • Monitor sediment accumulations, and remove sediment when pond volume has become reduced significantly. As Needed Figure 2 — Detention Pipe Maintenance Sediment Depths Indicatiing Required Maintenance` OSR Models Sediment Depth inches OSR 055 8 OSR 140 8 OSR 250 1 OSR 390 17 OSR 550 17 Series OSR 780 17 Series OR 1125 17 based on 1 % of the Stormce for unit°s total storage Figure 3 - Stormceptor Maintenance Depth Page 3 of 6 TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 3. Stormwater Model The stormwater analysis for the site was performed with Autodesk Storm and Sanitary Analysis software for hydrology, conveyance, and routing. The model is created to match the proposed design of the site stormwater systems. 1. The rainfall model uses a 24-hour Type II storm distribution, with a depth based on NOAA data 2. Inlet shaping is proposed within the project design documents and considered in the model. 3. Inlets are modeled with a localized depression 4. On -grade inlets are modeled with a gutter/channel bypass system to provide a route for any discharge that is not captured within the inlet. The bypass system uses a generic shape to provide a conveyance route. 5. The model elements are labeled to match the design documents. a. A prefix of "G" indicates a gutter/bypass system for an on -grade inlet b. A prefix of "S" indicates a subbasin for an inlet or node c. A prefix of "Out" indicates an outfall point of a drainage system, which has a direct connection to the "Outfall Channel" to the point of analysis. d. A prefix of OFF denotes offsite area. e. A prefix of J indicates a junction where flows are combined. COMB denotes the total combined flows for all areas. Page 4 of 6 TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 PostN— Det_01 PostN— Det_02 I � l I � Post 30IN RCP Post Bio Ou[ OFF_30IN ® _ _ N— Det_01 _ Ner_[Pet 02 ®PostBERIGNR 1 Ou11ce01 f / Bio_Owral OFF_BIO_POST / fLLLLLdBE171V,WR_PO5T �J_POST_30IN J ERWAAR J PRE 301N S_4A Laic-01 S_In4 Link-0B Pre 301N RCP , �-00 Berkman I liir� S_In1 PRE_CAAIB POST -COMB j Link-09 ` Post Bertanar Fi et U*-12 Berk—r2 link-04 Link-05 1.Berkmar4 Lnk-1n Berkmar` OFF_130IN_PRE J PREBIO 111 p� J_BERWAAR_PRE ' � S_In2 S_In3 S_In3A Pre_BERNAIAR �OFBERIfW.R_PRE OFF 610 PRE Figure 4 - Model schematic Page 5 of 6 TIMMONS GROUP Charlottesville Albemarle SPCA May 4, 2018 4. Stormwater Report This page intentionally left blank — report computations begin on the next page. Page 6 of 6 TIMMONS GROUP Project Description File Name ......................................................... CASPCA Storm.SPF Project Options Flow Units ........................................................ CFS Elevation Type ................................................. Elevation Hydrology Method ............................................ SCS TR-20 Time of Concentration (TOC) Method .............. User -Defined Link Routing Method ........................................ Kinematic Wave Enable Overflow Ponding at Nodes ................. YES Skip Steady State Analysis Time Periods ........ YES Analysis Options Start Analysis On ............................................. Apr 06, 2018 00:00:00 End Analysis On ............................................... Apr 07, 2018 00:00:00 Start Reporting On ........................................... Apr 06, 2018 00:00:00 Antecedent Dry Days ....................................... 0 days Runoff (Dry Weather) Time Step ...................... 0 01:00:00 days hh:mm:ss Runoff (Wet Weather) Time Step ..................... 0 00:05:00 days hh:mm:ss Reporting Time Step ........................................ 0 00:00:05 days hh:mm:ss Routing Time Step ........................................... 5 seconds Number of Elements Qty RainGages ...................................................... 1 Subbasins.......................................................... 21 Nodes................................................................ 14 Junctions .................................................. 10 Outfalls.................................................... 2 Flow Diversions ....................................... 0 Inlets........................................................ 0 Storage Nodes ......................................... 2 Links.................................................................. 12 Channels................................................. 0 Pipes........................................................ 10 Pumps...................................................... 0 Orifices..................................................... 2 Weirs....................................................... 0 Outlets..................................................... 0 Pollutants......................................................... 0 LandUses ........................................................ 0 Rainfall Details SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 Rain Gage-01 Time Series TS-01 Cumulative inches Virginia Albemarle 1 3.01 SCS Type II 24-hr Subbasin Summary SN Subbasin Area Weighted Total Total Total Peak Time of ID Curve Rainfall Runoff Runoff Runoff Concentration Number Volume (ac) (in) (in) (ft3) (cfs) (days hh:mm:ss) 1 OFF_30IN 9.96 56 3.01 0.21 7629 1.7 0 00:05:00 2 OFF_30IN_PRE 9.96 56 3.01 0.21 7629 1.7 0 00:05:00 3 OFF_BERKMAR_POST 0.30 72 3.01 0.82 897 0.4 0 00:05:00 4 OFF_BERKMAR_PRE 0.30 72 3.01 0.82 897 0.4 0 00:05:00 5 OFF_BIO_POST 1.23 77 3.01 1.06 4719 2.0 0 00:05:00 6 OFF_BIO_PRE 1.23 77 3.01 1.06 4719 2.0 0 00:05:00 7 Post_301N_RCP 2.85 56 3.01 0.22 2224 0.5 0 00:05:00 8 Post_BERKMAR 1.36 68 3.01 0.65 3194 1.2 0 00:05:00 9 Post_Berkmar_Sheet 0.28 61 3.01 0.37 375 0.1 0 00:05:00 10 Post _Bio_Out 2.01 78 3.01 1.14 8332 3.6 0 00:05:00 11 Post_New_Det_01 1.02 80 3.01 1.25 4625 2.0 0 00:05:00 12 Post_New _Det_02 0.42 94 3.01 2.32 3537 1.5 0 00:05:00 13 Pre_301N_RCP 3.45 56 3.01 0.22 2755 0.7 0 00:05:00 14 Pre_BERKMAR 3.30 72 3.01 0.80 9631 3.9 0 00:05:00 15 Pre-Bio 2.60 76 3.01 1.05 9872 4.2 0 00:05:00 16 S_4A 0.30 68 3.01 0.65 708 0.3 0 00:05:00 17 S_In1 0.45 73 3.01 0.85 1393 0.6 0 00:05:00 18 S_ln2 0.06 98 3.01 2.76 601 0.2 0 00:05:00 19 S_ln3 0.30 98 3.01 2.78 3025 1.2 0 00:05:00 20 S_ln3A 0.34 72 3.01 0.79 979 0.4 0 00:05:00 21 S In4 0.10 98 3.01 2.77 1007 0.4 0 00:05:00 Node Summary SN Element Element Invert Ground/Rim Initial Surcharge Ponded Peak Max HGL Max Min Time of Total Total Time ID Type Elevation (Max) Water Elevation Area Inflow Elevation Surcharge Freeboard Peak Flooded Flooded Elevation Elevation Attained Depth Attained Flooding Volume Attained Occurrence (ft) (ft) (ft) (ft) (ft') (cfs) (ft) (ft) (ft) (days hh:mm) (ac-in) (min) 5 J_POSTBIO Junction 0.00 6.00 0.00 6.00 0.00 5.99 0.00 0.00 6.00 0 00:00 0.00 0.00 6 J_BERKMAR Junction 510.25 513.88 0.00 6.00 0.00 1.88 510.62 0.00 3.26 0 00:00 0.00 0.00 7 J_BERKMAR_PRE Junction 0.00 6.00 0.00 6.00 0.00 4.29 0.00 0.00 6.00 0 00:00 0.00 0.00 8 J_POST_30IN Junction 0.00 6.00 0.00 6.00 0.00 2.26 0.00 0.00 6.00 0 00:00 0.00 0.00 9 J_PRE_30IN Junction 0.00 6.00 0.00 6.00 0.00 2.40 0.00 0.00 6.00 0 00:00 0.00 0.00 10 J_PREBIO Junction 0.00 6.00 0.00 6.00 0.00 6.22 0.00 0.00 6.00 0 00:00 0.00 0.00 11 POST -COMB Outfall 0.00 12.03 486.37 12 PRE COMB Outfall 0.00 11.80 0.00 Link Summary SN Element Element From To (Outlet) Length Inlet Outlet Average Diameter or Manning's Peak Design Flow Peak Flow/ Peak Flow Peak Flow Peak Flow Total Time Reported ID Type (Inlet) Node Invert Invert Slope Height Roughness Flow Capacity Design Flow Velocity Depth Depth/ Surcharged Condition Node Elevation Elevation Ratio Total Depth Ratio (ft) (ft) (ft) N (in) (cfs) (cfs) (ft/sec) (ft) (min) 1 Link-01 Pipe Bio_Outfall POST -COMB 1141.17 0.00 0.00 0.0000 0.000 0.0150 5.99 0.00 0.00 0.00 0.00 0.00 0.00 2 Link-03 Pipe J_PRE_30IN PRE _COMB 2031.38 0.00 0.00 0.0000 0.000 0.0150 2.40 0.00 0.00 0.00 0.00 0.00 0.00 3 Link-04 Pipe J_PREBIO PRE _COMB 987.61 0.00 0.00 0.0000 0.000 0.0150 6.22 0.00 0.00 0.00 0.00 0.00 0.00 4 Link-05 Pipe J_BERKMAR_PRE PRE _COMB 2077.86 0.00 0.00 0.0000 0.000 0.0150 4.29 0.00 0.00 0.00 0.00 0.00 0.00 5 Link-06 Pipe J_POST_30IN POST_COMB 2969.05 0.00 0.00 0.0000 0.000 0.0150 2.26 0.00 0.00 0.00 0.00 0.00 0.00 6 Link-08 Pipe J_BERKMAR Berkmar1 61.84 510.25 508.81 2.3300 15.000 0.0130 1.88 9.86 0.19 6.18 0.37 0.30 0.00 Calculated 7 Link-09 Pipe Berkmar1 Berkmar2 51.16 508.41 507.30 2.1700 18.000 0.0130 2.44 15.47 0.16 6.39 0.40 0.27 0.00 Calculated 8 Link-10 Pipe Berkmar2 Berkmar3 178.56 506.62 504.00 1.4700 18.000 0.0130 2.66 12.68 0.21 5.68 0.47 0.31 0.00 Calculated 9 Link-11 Pipe Berkmar3 Berkmar4 63.22 504.02 502.76 1.9900 18.000 0.0130 4.17 14.83 0.28 7.21 0.54 0.36 0.00 Calculated 10 Link-12 Pipe Berkmar4 POST _COMB 144.68 502.76 486.00 11.5800 18.000 0.0130 4.82 35.75 0.13 14.12 0.37 0.25 0.00 Calculated 11 Orifice-01 Orifice New _Det_01 Bio_Outfall 0.00 0.00 3.500 0.49 12 Orifice-02 Orifice New Det 02 J BERKMAR 0.00 510.25 3.000 0.34 Subbasin Hydrology Subbasin : OFF 30IN Input Data Area(ac)...................................................... 9.96 Weighted Curve Number ............................. 55.53 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.31 61.00 9.57 55.00 0.08 98.00 Composite Area & Weighted CN 9.96 55.53 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.21 Peak Runoff (cfs)......................................... 1.74 Weighted Curve Number ............................. 55.53 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF 30IN 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 N 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydragraph Time [hrs] Subbasin : OFF 30IN PRE Input Data Area(ac)...................................................... 9.96 Weighted Curve Number ............................. 55.53 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.31 61.00 9.57 55.00 0.08 98.00 Composite Area & Weighted CN 9.96 55.53 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.21 Peak Runoff (cfs)......................................... 1.74 Weighted Curve Number ............................. 55.53 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF 30IN PRE 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 N 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydragraph Time [hrs] Subbasin : OFF BERKMAR POST Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 72.20 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 61.00 0.18 55.00 0.12 98.00 Composite Area & Weighted CN 0.30 72.20 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.82 Peak Runoff (cfs)......................................... 0.37 Weighted Curve Number ............................. 72.20 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin:OFF BERKMAR POST 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0 0.2 Or 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : OFF BERKMAR PRE Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 72.20 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 61.00 0.18 55.00 0.12 98.00 Composite Area & Weighted CN 0.30 72.20 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.82 Peak Runoff (cfs)......................................... 0.37 Weighted Curve Number ............................. 72.20 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BERKMAR PRE 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0 0.2 Or 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : OFF BIO POST Input Data Area(ac)...................................................... 1.23 Weighted Curve Number ............................. 76.64 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.71 61.00 0.00 55.00 0.52 98.00 Composite Area & Weighted CN 1.23 76.64 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 1.06 Peak Runoff (cfs)......................................... 2.01 Weighted Curve Number ............................. 76.64 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BIO POST 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 _ 1.3 N 1.2 0 1.1 1 Or 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : OFF BIO PRE Input Data Area(ac)...................................................... 1.23 Weighted Curve Number ............................. 76.64 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.71 61.00 0.00 55.00 0.52 98.00 Composite Area & Weighted CN 1.23 76.64 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 1.06 Peak Runoff (cfs)......................................... 2.01 Weighted Curve Number ............................. 76.64 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BIO PRE 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 _ 1.3 N 1.2 0 1.1 1 Or 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post 30IN RCP Input Data Area(ac)...................................................... 2.85 Weighted Curve Number ............................. 55.69 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.33 61.00 2.52 55.00 Composite Area & Weighted CN 2.85 55.69 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.22 Peak Runoff (cfs)......................................... 0.52 Weighted Curve Number ............................. 55.69 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post 30IN RCP 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.54 0.52 0.5 0.48 0.46 0.44 0.42 0.4 0.38 0.36 0.34 _ 0.32 N 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post BERKMAR Input Data Area(ac)...................................................... 1.36 Weighted Curve Number ............................. 68.35 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.27 98.00 1.09 61.00 0.00 55.00 Composite Area & Weighted CN 1.36 68.35 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.65 Peak Runoff (cfs)......................................... 1.22 Weighted Curve Number ............................. 68.35 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post BERKMAR 1 1 1 0 0 cl� 0 0 0 0 0 0 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 25 2 15 1 05 1 95 ].9 85 ].8 75 ].7 65 ].6 55 ].5 45 ].4 35 ].3 25 ].2 15 ].1 05 I ILLLI L�--i I i 1-1H 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : Post Berkmar Sheet Input Data Area(ac)...................................................... 0.28 Weighted Curve Number ............................. 61.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 98.00 0.28 61.00 0.00 55.00 Composite Area & Weighted CN 0.28 61.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.37 Peak Runoff (cfs)......................................... 0.13 Weighted Curve Number ............................. 61.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post Berkmar Sheet 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.135 0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 _ 0.08 N0.075 0.07 60.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : Post Bio Out Input Data Area(ac)...................................................... 2.01 Weighted Curve Number ............................. 78.10 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.96 98.00 0.61 61.00 0.25 61.00 0.19 55.00 Composite Area & Weighted CN 2.01 78.10 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 1.14 Peak Runoff (cfs)......................................... 3.59 Weighted Curve Number ............................. 78.10 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post Bio Out 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 N 1.8 cl� 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : Post New Det 01 Input Data Area(ac)...................................................... 1.02 Weighted Curve Number ............................. 79.86 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.52 98.00 0.50 61.00 Composite Area & Weighted CN 1.02 79.86 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 1.25 Peak Runoff (cfs)......................................... 2.01 Weighted Curve Number ............................. 79.86 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post New Det 01 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 _ 1.3 N 1.2 0 1.1 1 Or 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post New Det 02 Input Data Area(ac)...................................................... 0.42 Weighted Curve Number ............................. 93.60 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.37 98.00 0.05 61.00 Composite Area & Weighted CN 0.42 93.60 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 2.32 Peak Runoff (cfs)......................................... 1.49 Weighted Curve Number ............................. 93.60 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post New Det 02 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 1.55 1.5 1.45 1.4 1.35 1.3 1.25 1.2 1.15 1.1 1.05 1 0.95 0.9 0.85 0.8 6 0.75 � 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre 30IN RCP Input Data Area(ac)...................................................... 3.45 Weighted Curve Number ............................. 55.90 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.03 98.00 0.30 61.00 3.12 55.00 Composite Area & Weighted CN 3.45 55.90 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.22 Peak Runoff (cfs)......................................... 0.66 Weighted Curve Number ............................. 55.90 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre 30IN RCP 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.75 0.7 0.65 0.6 0.55 0.5 0.45 N v 0.4 O 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre BERKMAR Input Data Area(ac)...................................................... 3.30 Weighted Curve Number ............................. 71.80 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 1.02 98.00 1.93 61.00 0.35 55.00 Composite Area & Weighted CN 3.30 71.80 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.80 Peak Runoff (cfs)......................................... 3.92 Weighted Curve Number ............................. 71.80 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre BERKMAR 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 N 2.4 22 0 2 C 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre-Bio Input Data Area(ac)...................................................... 2.60 Weighted Curve Number ............................. 76.44 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 1.15 98.00 1.05 61.00 0.40 55.00 Composite Area & Weighted CN 2.60 76.44 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 1.05 Peak Runoff (cfs)......................................... 4.21 Weighted Curve Number ............................. 76.44 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre-Bio 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 4.6 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 N 2.6 -- 2.4 0 22 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S 4A Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 68.43 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.07 98.00 0.17 61.00 0.06 55.00 Composite Area & Weighted CN 0.30 68.43 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.65 Peak Runoff (cfs)......................................... 0.27 Weighted Curve Number ............................. 68.43 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S 4A 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.28 0.27 0.26 0.25 0.24 0.23 0.22 0.21 0.2 0.19 0.18 _ 0.17 N 0.16 0.15 0 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S In1 Input Data Area(ac)...................................................... 0.45 Weighted Curve Number ............................. 72.80 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.15 98.00 0.26 61.00 0.04 55.00 Composite Area & Weighted CN 0.45 72.80 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.85 Peak Runoff (cfs)......................................... 0.57 Weighted Curve Number ............................. 72.80 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S IM 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.62 0.6 0.58 0.56 0.54 0.52 0.5 0.48 0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S In2 Input Data Area(ac)...................................................... 0.06 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.06 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.06 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 2.76 Peak Runoff (cfs)......................................... 0.23 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In2 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.24 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 N 0.13 0 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S Ina Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.30 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.30 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 2.78 Peak Runoff (cfs)......................................... 1.18 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S Ina 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 1.25 1.2 1.15 1.1 1.05 1 0.95 0.9 0.85 0.8 0.75 N 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : S In3A Input Data Area(ac)...................................................... 0.34 Weighted Curve Number ............................. 71.56 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.11 98.00 0.15 61.00 0.08 55.00 Composite Area & Weighted CN 0.34 71.56 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 0.79 Peak Runoff (cfs)......................................... 0.40 Weighted Curve Number ............................. 71.56 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In3A 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 N 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S In4 Input Data Area(ac)...................................................... 0.10 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.10 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.10 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 3.01 Total Runoff (in) ........................................... 2.77 Peak Runoff (cfs)......................................... 0.40 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In4 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 _ 0.26 N 0.24 0.22 O 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Pipe Results SN Element Peak Design Flow Peak Flow/ Peak Flow Travel Peak Flow Peak Flow ID Flow Capacity Design Flow Velocity Time Depth Depth/ Ratio Total Depth Ratio (cfs) (cfs) (fUsec) (min) (ft) 1 Link-01 6.0 0.0 0.0 0.0 0.0 0.0 2 Link-03 2.4 0.0 0.0 0.0 0.0 0.0 3 Link-04 6.2 0.0 0.0 0.0 0.0 0.0 4 Link-05 4.3 0.0 0.0 0.0 0.0 0.0 5 Link-06 2.3 0.0 0.0 0.0 0.0 0.0 6 Link-08 1.9 9.9 0.2 6.2 0.2 0.4 0.3 7 Link-09 2.4 15.5 0.2 6.4 0.1 0.4 0.3 8 Link-10 2.7 12.7 0.2 5.7 0.5 0.5 0.3 9 Link-11 4.2 14.8 0.3 7.2 0.1 0.5 0.4 10 Link-12 4.8 35.8 0.1 14.1 0.2 0.4 0.3 Storage Nodes Storage Node : New_Det_01 Input Data Invert Elevation (ft).................................................. 0.00 Max (Rim) Elevation (ft).......................................... 7.00 Max (Rim) Offset (ft)............................................... 7.00 Initial Water Elevation (ft)....................................... 0.00 Initial Water Depth (ft)............................................. 0.00 Ponded Area (ft').................................................... 0.00 Evaporation Loss .................................................... 0.00 Storage Area Volume Curves Storage Curve : Storage-01 Stage Storage Storage Area Volume (ft) (ft') (ft') 0 0.0000 0.000 0.1 207.6656 10.38 0.2 291.5476 35.34 0.3 354.4362 67.64 0.4 406.2019 105.67 0.5 450.6939 148.51 0.6 489.8979 195.54 0.7 525.0000 246.28 0.8 556.7764 300.37 0.9 585.7687 357.50 1 612.3724 417.41 1.1 636.8870 479.87 1.2 659.5453 544.69 1.3 680.5329 611.69 1.4 700.0000 680.72 1.5 718.0703 751.62 1.6 734.8469 824.27 1.7 750.4166 898.53 1.8 764.8529 974.29 1.9 778.2191 1051.44 2 790.5694 1129.88 2.1 801.9507 1209.51 2.2 812.4038 1290.23 2.3 821.9641 1371.95 2.4 830.6624 1454.58 2.5 838.5255 1538.04 2.6 845.5767 1622.25 2.7 851.8363 1707.12 2.8 857.3214 1792.58 2.9 862.0470 1878.55 3 866.0254 1964.95 3.1 869.2669 2051.71 3.2 871.7798 2138.76 3.3 873.5703 2226.03 3.4 874.6428 2313.44 3.5 875.0000 2400.92 3.6 874.6428 2488.40 3.7 873.5703 2575.81 3.8 871.7798 2663.08 3.9 869.2669 2750.13 4 866.0254 2836.89 4.1 862.0470 2923.29 4.2 857.3214 3009.26 4.3 851.8363 3094.72 4.4 845.5767 3179.59 4.5 838.5255 3263.80 4.6 830.6624 3347.26 4.7 821.9641 3429.89 4.8 812.4038 3511.61 4.9 801.9507 3592.33 5 790.5694 3671.96 5.1 778.2191 3750.40 5.2 764.8529 3827.55 5.3 750.4166 3903.31 5.4 734.8469 3977.57 5.5 718.0703 4050.22 5.6 700.0000 4121.12 5.7 680.5329 4190.15 5.8 659.5453 4257.15 5.9 636.8870 4321.97 6 612.3724 4384.43 6.1 585.7687 4444.34 6.2 556.7764 4501.47 6.3 525.0000 4555.56 6.4 489.8979 4606.30 6.5 450.6939 4653.33 6.6 406.2019 4696.17 6.7 354.4362 4734.20 6.8 291.5476 4766.50 6.9 207.6656 4791.46 7 0.0000 4801.84 7 6.8 s.s 6.4 s.x 6 6.8 6.6 6.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 m 3.4 L4n 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Storage Area Volume Curves Storage Volume (" 0 500 1,000 1,500 ?,000 2,500 3,000 3,500 4,000 4,500 0 50 100 150 200 250 300 350 400 450 500 5550 600 650 700 750 800 8�.O Storage Area (M - Storage Area - Storage Volume 7 6.8 6.6 6.4 6.2 6 5.8 6.6 5.4 5.2 5 4.8 4.6 4.4 4.2 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Q m Storage Node : New_Det_01 (continued) Output Summary Results Peak Inflow (cfs)..................................................... 2.00 Peak Lateral Inflow (cfs)......................................... 2.00 Peak Outflow (cfs)................................................... 0.49 Peak Exfiltration Flow Rate (cfm) ........................... 0.00 Max HGL Elevation Attained (ft) ............................. 2.33 Max HGL Depth Attained (ft)................................... 2.33 Average HGL Elevation Attained (ft) ....................... 0.20 Average HGL Depth Attained (ft) ............................ 0.2 Time of Max HGL Occurrence (days hh:mm) ......... 0 12:06 Total Exfiltration Volume (1000-ft3) ......................... 0.000 Total Flooded Volume (ac-in)................................. 0 Total Time Flooded (min) ........................................ 0 Total Retention Time (sec) ...................................... 0.00 Storage Node : New_Det_02 Input Data Invert Elevation (ft).................................................. 0.00 Max (Rim) Elevation (ft).......................................... 5.00 Max (Rim) Offset (ft)............................................... 5.00 Initial Water Elevation (ft)....................................... 0.00 Initial Water Depth (ft)............................................. 0.00 Ponded Area (ft').................................................... 0.00 Evaporation Loss .................................................... 0.00 Storage Area Volume Curves Storage Curve : Storage-02 Stage Storage Storage Area Volume (ft) (ft') (ft') 0 0.0000 0.000 0.1 218.4000 10.92 0.2 305.6963 37.12 0.3 370.4795 70.93 0.4 423.2174 110.61 0.5 468.0000 155.17 0.6 506.9400 203.92 0.7 541.2998 256.33 0.8 571.9054 311.99 0.9 599.3324 370.55 1 624.0000 431.72 1.1 646.2242 495.23 1.2 666.2497 560.85 1.3 684.2694 628.38 1.4 700.4383 697.62 1.5 714.8818 768.39 1.6 727.7028 840.52 1.7 738.9857 913.85 1.8 748.8000 988.24 1.9 757.2029 1063.54 2 764.2408 1139.61 2.1 769.9513 1216.32 2.2 774.3636 1293.54 2.3 777.5000 1371.13 2.4 779.3758 1448.97 2.5 780.0000 1526.94 2.6 779.3758 1604.91 2.7 777.5000 1682.75 2.8 774.3636 1760.34 2.9 769.9513 1837.56 3 764.2408 1914.27 3.1 757.2029 1990.34 3.2 748.8000 2065.64 3.3 738.9857 2140.03 3.4 727.7028 2213.36 3.5 714.8818 2285.49 3.6 700.4383 2356.26 3.7 684.2694 2425.50 3.8 666.2497 2493.03 3.9 646.2242 2558.65 4 624.0000 2622.16 4.1 599.3324 2683.33 4.2 571.9054 2741.89 4.3 541.2998 2797.55 4.4 506.9400 2849.96 4.5 468.0000 2898.71 4.6 423.2174 2943.27 4.7 370.4795 2982.95 4.8 305.6963 3016.76 4.9 218.4000 3042.96 5 0.0000 3053.88 5 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 2.9 2.8 2.7 v 2.6 2.6 2.4 2.3 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 4.6 0.6 0.4 0.3 0.2 0.1 0 Storage Area Volume Curves Storage Volume (ft) 0 200 400 Goo 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 2,600 2,800 3,000 0 50 100 150 200 250 300 350 400 450 500 5�4 600 650 700 750 Storage Area (M - Storage Area - Storage Volume 5 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 Storage Node : New_Det_02 (continued) Output Summary Results Peak Inflow (cfs)..................................................... 1.49 Peak Lateral Inflow (cfs)......................................... 1.49 Peak Outflow (cfs)................................................... 0.34 Peak Exfiltration Flow Rate (cfm) ........................... 0.00 Max HGL Elevation Attained (ft) ............................. 2.05 Max HGL Depth Attained (ft)................................... 2.05 Average HGL Elevation Attained (ft) ....................... 0.19 Average HGL Depth Attained (ft) ............................ 0.19 Time of Max HGL Occurrence (days hh:mm) ......... 0 12:06 Total Exfiltration Volume (1000-ft3) ......................... 0.000 Total Flooded Volume (ac-in)................................. 0 Total Time Flooded (min) ........................................ 0 Total Retention Time (sec) ...................................... 0.00 Project Description File Name ......................................................... CASPCA Storm.SPF Project Options Flow Units ........................................................ CFS Elevation Type ................................................. Elevation Hydrology Method ............................................ SCS TR-20 Time of Concentration (TOC) Method .............. User -Defined Link Routing Method ........................................ Kinematic Wave Enable Overflow Ponding at Nodes ................. YES Skip Steady State Analysis Time Periods ........ YES Analysis Options Start Analysis On ............................................. Apr 06, 2018 00:00:00 End Analysis On ............................................... Apr 07, 2018 00:00:00 Start Reporting On ........................................... Apr 06, 2018 00:00:00 Antecedent Dry Days ....................................... 0 days Runoff (Dry Weather) Time Step ...................... 0 01:00:00 days hh:mm:ss Runoff (Wet Weather) Time Step ..................... 0 00:05:00 days hh:mm:ss Reporting Time Step ........................................ 0 00:00:05 days hh:mm:ss Routing Time Step ........................................... 5 seconds Number of Elements Qty RainGages ...................................................... 1 Subbasins.......................................................... 21 Nodes................................................................ 14 Junctions .................................................. 10 Outfalls.................................................... 2 Flow Diversions ....................................... 0 Inlets........................................................ 0 Storage Nodes ......................................... 2 Links.................................................................. 12 Channels................................................. 0 Pipes........................................................ 10 Pumps...................................................... 0 Orifices..................................................... 2 Weirs....................................................... 0 Outlets..................................................... 0 Pollutants......................................................... 0 LandUses ........................................................ 0 Rainfall Details SN Rain Gage Data Data Source Rainfall Rain State County Return Rainfall Rainfall ID Source ID Type Units Period Depth Distribution (years) (inches) 1 Rain Gage-01 Time Series TS-10 Cumulative inches Virginia Albemarle 10 5.50 SCS Type II 24-hr Subbasin Summary SN Subbasin Area Weighted Total Total Total Peak Time of ID Curve Rainfall Runoff Runoff Runoff Concentration Number Volume (ac) (in) (in) (ft3) (cfs) (days hh:mm:ss) 1 OFF_30IN 9.96 56 5.50 1.28 46134 18.1 0 00:05:00 2 OFF_30IN_PRE 9.96 56 5.50 1.28 46134 18.1 0 00:05:00 3 OFF_BERKMAR_POST 0.30 72 5.50 2.61 2839 1.3 0 00:05:00 4 OFF_BERKMAR_PRE 0.30 72 5.50 2.61 2839 1.3 0 00:05:00 5 OFF_BIO_POST 1.23 77 5.50 3.01 13453 5.9 0 00:05:00 6 OFF_BIO_PRE 1.23 77 5.50 3.01 13453 5.9 0 00:05:00 7 Post_301N_RCP 2.85 56 5.50 1.29 13325 5.2 0 00:05:00 8 Post_BERKMAR 1.36 68 5.50 2.27 11221 4.9 0 00:05:00 9 Post_Berkmar_Sheet 0.28 61 5.50 1.68 1707 0.7 0 00:05:00 10 Post _Bio_Out 2.01 78 5.50 3.15 22983 10.1 0 00:05:00 11 Post_New_Det_01 1.02 80 5.50 3.32 12293 5.4 0 00:05:00 12 Post_New _Det_02 0.42 94 5.50 4.76 7253 2.9 0 00:05:00 13 Pre_301N_RCP 3.45 56 5.50 1.30 16306 6.4 0 00:05:00 14 Pre_BERKMAR 3.30 72 5.50 2.57 30810 13.5 0 00:05:00 15 Pre-Bio 2.60 76 5.50 2.99 28257 12.4 0 00:05:00 16 S_4A 0.30 68 5.50 2.28 2482 1.1 0 00:05:00 17 S_In1 0.45 73 5.50 2.66 4347 1.9 0 00:05:00 18 S_ln2 0.06 98 5.50 5.26 1145 0.4 0 00:05:00 19 S_ln3 0.30 98 5.50 5.26 5730 2.2 0 00:05:00 20 S_ln3A 0.34 72 5.50 2.55 3147 1.4 0 00:05:00 21 S In4 0.10 98 5.50 5.26 1910 0.7 0 00:05:00 Node Summary SN Element Element Invert Ground/Rim Initial Surcharge Ponded Peak Max HGL Max Min Time of Total Total Time ID Type Elevation (Max) Water Elevation Area Inflow Elevation Surcharge Freeboard Peak Flooded Flooded Elevation Elevation Attained Depth Attained Flooding Volume Attained Occurrence (ft) (ft) (ft) (ft) (ft') (cfs) (ft) (ft) (ft) (days hh:mm) (ac-in) (min) 5 J_POSTBIO Junction 0.00 6.00 0.00 6.00 0.00 16.56 0.00 0.00 6.00 0 00:00 0.00 0.00 6 J_BERKMAR Junction 510.25 513.88 0.00 6.00 0.00 6.52 510.99 0.00 2.89 0 00:00 0.00 0.00 7 J_BERKMAR_PRE Junction 0.00 6.00 0.00 6.00 0.00 14.72 0.00 0.00 6.00 0 00:00 0.00 0.00 8 J_POST_30IN Junction 0.00 6.00 0.00 6.00 0.00 23.27 0.00 0.00 6.00 0 00:00 0.00 0.00 9 J_PRE_30IN Junction 0.00 6.00 0.00 6.00 0.00 24.47 0.00 0.00 6.00 0 00:00 0.00 0.00 10 J_PREBIO Junction 0.00 6.00 0.00 6.00 0.00 18.25 0.00 0.00 6.00 0 00:00 0.00 0.00 11 POST -COMB Outfall 0.00 54.46 486.65 12 PRE COMB Outfall 0.00 57.20 0.00 Link Summary SN Element Element From To (Outlet) Length Inlet Outlet Average Diameter or Manning's Peak Design Flow Peak Flow/ Peak Flow Peak Flow Peak Flow Total Time Reported ID Type (Inlet) Node Invert Invert Slope Height Roughness Flow Capacity Design Flow Velocity Depth Depth/ Surcharged Condition Node Elevation Elevation Ratio Total Depth Ratio (ft) (ft) (ft) N (in) (cfs) (cfs) (ft/sec) (ft) (min) 1 Link-01 Pipe Bio_Outfall POST -COMB 1141.17 0.00 0.00 0.0000 0.000 0.0150 16.56 0.00 0.00 0.00 0.00 0.00 0.00 2 Link-03 Pipe J_PRE_30IN PRE _COMB 2031.38 0.00 0.00 0.0000 0.000 0.0150 24.47 0.00 0.00 0.00 0.00 0.00 0.00 3 Link-04 Pipe J_PREBIO PRE _COMB 987.61 0.00 0.00 0.0000 0.000 0.0150 18.25 0.00 0.00 0.00 0.00 0.00 0.00 4 Link-05 Pipe J_BERKMAR_PRE PRE _COMB 2077.86 0.00 0.00 0.0000 0.000 0.0150 14.72 0.00 0.00 0.00 0.00 0.00 0.00 5 Link-06 Pipe J_POST_30IN POST_COMB 2969.05 0.00 0.00 0.0000 0.000 0.0150 23.27 0.00 0.00 0.00 0.00 0.00 0.00 6 Link-08 Pipe J_BERKMAR Berkmar1 61.84 510.25 508.81 2.3300 15.000 0.0130 6.52 9.86 0.66 8.58 0.74 0.59 0.00 Calculated 7 Link-09 Pipe Berkmar1 Berkmar2 51.16 508.41 507.30 2.1700 18.000 0.0130 8.41 15.47 0.54 8.94 0.79 0.53 0.00 Calculated 8 Link-10 Pipe Berkmar2 Berkmar3 178.56 506.62 504.00 1.4700 18.000 0.0130 8.81 12.68 0.70 7.77 0.92 0.61 0.00 Calculated 9 Link-11 Pipe Berkmar3 Berkmar4 63.22 504.02 502.76 1.9900 18.000 0.0130 12.30 14.83 0.83 9.38 1.04 0.70 0.00 Calculated 10 Link-12 Pipe Berkmar4 POST _COMB 144.68 502.76 486.00 11.5800 18.000 0.0130 14.11 35.75 0.39 19.03 0.65 0.44 0.00 Calculated 11 Orifice-01 Orifice New _Det_01 Bio_Outfall 0.00 0.00 3.500 0.83 12 Orifice-02 Orifice New Det 02 J BERKMAR 0.00 510.25 3.000 0.48 Subbasin Hydrology Subbasin : OFF 30IN Input Data Area(ac)...................................................... 9.96 Weighted Curve Number ............................. 55.53 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.31 61.00 9.57 55.00 0.08 98.00 Composite Area & Weighted CN 9.96 55.53 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 1.28 Peak Runoff (cfs)......................................... 18.05 Weighted Curve Number ............................. 55.53 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF 30IN 8 7.5 7 6.5 6 5.5 5 4.5 v 4 3.5 3 2.5 2 1.5 1 0.5 20 19 18 17 16 15 14 13 12 N 11 v 10 0 9 Or 8 7 6 5 4 3 2 1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydragraph Time [hrs] Subbasin : OFF 30IN PRE Input Data Area(ac)...................................................... 9.96 Weighted Curve Number ............................. 55.53 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.31 61.00 9.57 55.00 0.08 98.00 Composite Area & Weighted CN 9.96 55.53 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 1.28 Peak Runoff (cfs)......................................... 18.05 Weighted Curve Number ............................. 55.53 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF 30IN PRE 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 20 19 18 17 16 15 14 13 12 N 11 v 10 0 9 Or 8 7 6 5 4 3 2 1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydragraph Time [hrs] Subbasin : OFF BERKMAR POST Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 72.20 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 61.00 0.18 55.00 0.12 98.00 Composite Area & Weighted CN 0.30 72.20 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.61 Peak Runoff (cfs)......................................... 1.25 Weighted Curve Number ............................. 72.20 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin:OFF BERKMAR POST 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 1 1 1 0 0 cl� 0 0 0 0 0 0 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 25 2 15 1 05 1 95 ].9 85 ].8 75 ].7 65 ].6 55 ].5 45 ].4 35 ].3 25 ].2 15 ].1 05 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : OFF BERKMAR PRE Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 72.20 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 61.00 0.18 55.00 0.12 98.00 Composite Area & Weighted CN 0.30 72.20 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.61 Peak Runoff (cfs)......................................... 1.25 Weighted Curve Number ............................. 72.20 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BERKMAR PRE 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 1 1 1 0 0 cl� 0 0 0 0 0 0 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 25 2 15 1 05 1 95 ].9 85 ].8 75 ].7 65 ].6 55 ].5 45 ].4 35 ].3 25 ].2 15 ].1 05 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : OFF BIO POST Input Data Area(ac)...................................................... 1.23 Weighted Curve Number ............................. 76.64 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.71 61.00 0.00 55.00 0.52 98.00 Composite Area & Weighted CN 1.23 76.64 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 3.01 Peak Runoff (cfs)......................................... 5.88 Weighted Curve Number ............................. 76.64 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BIO POST 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 6.2 6 5.8 5.6 5.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 3.2 0 3 � 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : OFF BIO PRE Input Data Area(ac)...................................................... 1.23 Weighted Curve Number ............................. 76.64 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.71 61.00 0.00 55.00 0.52 98.00 Composite Area & Weighted CN 1.23 76.64 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 3.01 Peak Runoff (cfs)......................................... 5.88 Weighted Curve Number ............................. 76.64 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : OFF BIO PRE 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 6.2 6 5.8 5.6 5.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 3.2 0 3 � 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post 30IN RCP Input Data Area(ac)...................................................... 2.85 Weighted Curve Number ............................. 55.69 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.33 61.00 2.52 55.00 Composite Area & Weighted CN 2.85 55.69 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 1.29 Peak Runoff (cfs)......................................... 5.23 Weighted Curve Number ............................. 55.69 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post 30IN RCP 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 5.6 5.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 N 3.2 3 0 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post BERKMAR Input Data Area(ac)...................................................... 1.36 Weighted Curve Number ............................. 68.35 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.27 98.00 1.09 61.00 0.00 55.00 Composite Area & Weighted CN 1.36 68.35 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.27 Peak Runoff (cfs)......................................... 4.88 Weighted Curve Number ............................. 68.35 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post BERKMAR 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 3.2 3 N 2.8 0 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post Berkmar Sheet Input Data Area(ac)...................................................... 0.28 Weighted Curve Number ............................. 61.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.00 98.00 0.28 61.00 0.00 55.00 Composite Area & Weighted CN 0.28 61.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 1.68 Peak Runoff (cfs)......................................... 0.72 Weighted Curve Number ............................. 61.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post Berkmar Sheet 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0.8 0.75 0.7 0.65 0.6 0.55 0.5 N 0.45 0 0.4 � 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post Bio Out Input Data Area(ac)...................................................... 2.01 Weighted Curve Number ............................. 78.10 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.96 98.00 0.61 61.00 0.25 61.00 0.19 55.00 Composite Area & Weighted CN 2.01 78.10 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 3.15 Peak Runoff (cfs)......................................... 10.05 Weighted Curve Number ............................. 78.10 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post Bio Out 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 11 10.5 10 9.5 9 8.5 8 7.5 7 _ 6.5 N � 6 0 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post New Det 01 Input Data Area(ac)...................................................... 1.02 Weighted Curve Number ............................. 79.86 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.52 98.00 0.50 61.00 Composite Area & Weighted CN 1.02 79.86 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 3.32 Peak Runoff (cfs)......................................... 5.35 Weighted Curve Number ............................. 79.86 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post New Det 01 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 5.6 5.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 3.4 N 3.2 3 0 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Post New Det 02 Input Data Area(ac)...................................................... 0.42 Weighted Curve Number ............................. 93.60 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.37 98.00 0.05 61.00 Composite Area & Weighted CN 0.42 93.60 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 4.76 Peak Runoff (cfs)......................................... 2.93 Weighted Curve Number ............................. 93.60 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Post New Det 02 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 3.1 3 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2 1.9 1.8 1.7 1.6 0 1.5 � 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre 30IN RCP Input Data Area(ac)...................................................... 3.45 Weighted Curve Number ............................. 55.90 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.03 98.00 0.30 61.00 3.12 55.00 Composite Area & Weighted CN 3.45 55.90 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 1.30 Peak Runoff (cfs)......................................... 6.42 Weighted Curve Number ............................. 55.90 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre 30IN RCP 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 7 6.5 6 5.5 5 4.5 N 4 L� 0 3.5 3 2.5 2 1.5 1 0.5 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre BERKMAR Input Data Area(ac)...................................................... 3.30 Weighted Curve Number ............................. 71.80 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 1.02 98.00 1.93 61.00 0.35 55.00 Composite Area & Weighted CN 3.30 71.80 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.57 Peak Runoff (cfs)......................................... 13.48 Weighted Curve Number ............................. 71.80 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre BERKMAR 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 14 13.5 13 12.5 12 11.5 11 10.5 10 9.5 9 8.5 N 8 7.5 v 7 O 6.5 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : Pre-Bio Input Data Area(ac)...................................................... 2.60 Weighted Curve Number ............................. 76.44 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 1.15 98.00 1.05 61.00 0.40 55.00 Composite Area & Weighted CN 2.60 76.44 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.99 Peak Runoff (cfs)......................................... 12.37 Weighted Curve Number ............................. 76.44 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : Pre-Bio 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 13 12.5 12 11.5 11 10.5 10 9.5 9 8.5 8 7.5 N 7 0 6.5 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S 4A Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 68.43 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.07 98.00 0.17 61.00 0.06 55.00 Composite Area & Weighted CN 0.30 68.43 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.28 Peak Runoff (cfs)......................................... 1.08 Weighted Curve Number ............................. 68.43 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S 4A 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 1.15 1.1 1.05 1 0.95 0.9 0.85 0.8 0.75 0.7 N 0.65 -- 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : S In1 Input Data Area(ac)...................................................... 0.45 Weighted Curve Number ............................. 72.80 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.15 98.00 0.26 61.00 0.04 55.00 Composite Area & Weighted CN 0.45 72.80 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.66 Peak Runoff (cfs)......................................... 1.89 Weighted Curve Number ............................. 72.80 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S IM 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 N 1.1 v 1 0 0.9 Or 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S In2 Input Data Area(ac)...................................................... 0.06 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.06 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.06 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 5.26 Peak Runoff (cfs)......................................... 0.42 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In2 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 _ 0.26 N 0.24 0.22 O 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S Ina Input Data Area(ac)...................................................... 0.30 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.30 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.30 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 5.26 Peak Runoff (cfs)......................................... 2.17 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S Ina 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 2.3 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 N 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Subbasin : S In3A Input Data Area(ac)...................................................... 0.34 Weighted Curve Number ............................. 71.56 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.11 98.00 0.15 61.00 0.08 55.00 Composite Area & Weighted CN 0.34 71.56 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 2.55 Peak Runoff (cfs)......................................... 1.37 Weighted Curve Number ............................. 71.56 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In3A 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 1.45 1.4 1.35 1.3 1.25 1.2 1.15 1.1 1.05 1 0.95 0.9 _ 0.85 N 0.8 0.75 0 0.7 O 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph 0 1 2 3 4 6 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Subbasin : S In4 Input Data Area(ac)...................................................... 0.10 Weighted Curve Number ............................. 98.00 Rain Gage ID ............................................... Rain Gage-01 Composite Curve Number Area Soil Curve Soil/Surface Description (acres) Group Number 0.10 98.00 0.00 61.00 0.00 55.00 Composite Area & Weighted CN 0.10 98.00 Subbasin Runoff Results Total Rainfall (in) ......................................... 5.50 Total Runoff (in) ........................................... 5.26 Peak Runoff (cfs)......................................... 0.74 Weighted Curve Number ............................. 98.00 Time of Concentration (days hh:mm:ss) ...... 0 00:05:00 Subbasin : S In4 8.5 8 7.5 7 6.5 6 5.5 5 v 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0.8 0.75 0.7 0.65 0.6 0.55 0.5 N 0.45 0 0.4 � 0.35 0.3 0.25 0.2 0.15 0.1 0.05 Rainfall Intensity Graph 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [hrs] Runoff Hydrograph Time [hrs] Pipe Results SN Element Peak Design Flow Peak Flow/ Peak Flow Travel Peak Flow Peak Flow ID Flow Capacity Design Flow Velocity Time Depth Depth/ Ratio Total Depth Ratio (cfs) (Cfs) (ft/sec) (min) (ft) 6 SITE-BERKMAR1 6.5 9.9 0.7 8.6 0.1 0.7 0.6 7 BERKMAR 1-2 8.4 15.5 0.5 8.9 0.1 0.8 0.5 8 BERKMAR 2-3 8.8 12.7 0.7 7.8 0.4 0.9 0.6 9 BERKMAR 3-4 12.3 14.8 0.8 9.4 0.1 1.0 0.7 10 BERKMAR 4 -DITCH 14.1 35.8 0.4 19.0 0.1 0.7 0.4 Storage Nodes Storage Node : New_Det_01 Input Data Invert Elevation (ft).................................................. 0.00 Max (Rim) Elevation (ft).......................................... 7.00 Max (Rim) Offset (ft)............................................... 7.00 Initial Water Elevation (ft)....................................... 0.00 Initial Water Depth (ft)............................................. 0.00 Ponded Area (ft').................................................... 0.00 Evaporation Loss .................................................... 0.00 Storage Area Volume Curves Storage Curve : Storage-01 Stage Storage Storage Area Volume (ft) (ft') (ft') 0 0.0000 0.000 0.1 207.6656 10.38 0.2 291.5476 35.34 0.3 354.4362 67.64 0.4 406.2019 105.67 0.5 450.6939 148.51 0.6 489.8979 195.54 0.7 525.0000 246.28 0.8 556.7764 300.37 0.9 585.7687 357.50 1 612.3724 417.41 1.1 636.8870 479.87 1.2 659.5453 544.69 1.3 680.5329 611.69 1.4 700.0000 680.72 1.5 718.0703 751.62 1.6 734.8469 824.27 1.7 750.4166 898.53 1.8 764.8529 974.29 1.9 778.2191 1051.44 2 790.5694 1129.88 2.1 801.9507 1209.51 2.2 812.4038 1290.23 2.3 821.9641 1371.95 2.4 830.6624 1454.58 2.5 838.5255 1538.04 2.6 845.5767 1622.25 2.7 851.8363 1707.12 2.8 857.3214 1792.58 2.9 862.0470 1878.55 3 866.0254 1964.95 3.1 869.2669 2051.71 3.2 871.7798 2138.76 3.3 873.5703 2226.03 3.4 874.6428 2313.44 3.5 875.0000 2400.92 3.6 874.6428 2488.40 3.7 873.5703 2575.81 3.8 871.7798 2663.08 3.9 869.2669 2750.13 4 866.0254 2836.89 4.1 862.0470 2923.29 4.2 857.3214 3009.26 4.3 851.8363 3094.72 4.4 845.5767 3179.59 4.5 838.5255 3263.80 4.6 830.6624 3347.26 4.7 821.9641 3429.89 4.8 812.4038 3511.61 4.9 801.9507 3592.33 5 790.5694 3671.96 5.1 778.2191 3750.40 5.2 764.8529 3827.55 5.3 750.4166 3903.31 5.4 734.8469 3977.57 5.5 718.0703 4050.22 5.6 700.0000 4121.12 5.7 680.5329 4190.15 5.8 659.5453 4257.15 5.9 636.8870 4321.97 6 612.3724 4384.43 6.1 585.7687 4444.34 6.2 556.7764 4501.47 6.3 525.0000 4555.56 6.4 489.8979 4606.30 6.5 450.6939 4653.33 6.6 406.2019 4696.17 6.7 354.4362 4734.20 6.8 291.5476 4766.50 6.9 207.6656 4791.46 7 0.0000 4801.84 7 6.8 s.s 6.4 s.x 6 6.8 6.6 6.4 5.2 5 4.8 4.6 4.4 4.2 4 3.8 3.6 m 3.4 L4n 3.2 3 2.8 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Storage Area Volume Curves Storage Volume (" 0 500 1,000 1,500 ?,000 2,500 3,000 3,500 4,000 4,500 0 50 100 150 200 250 300 350 400 450 500 5550 600 650 700 750 800 8�.O Storage Area (M - Storage Area - Storage Volume 7 6.8 6.6 6.4 6.2 6 5.8 6.6 5.4 5.2 5 4.8 4.6 4.4 4.2 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Q m Storage Node : New_Det_01 (continued) Output Summary Results Peak Inflow (cfs)..................................................... 5.35 Peak Lateral Inflow (cfs)......................................... 5.35 Peak Outflow (cfs)................................................... 0.83 Peak Exfiltration Flow Rate (cfm) ........................... 0.00 Max HGL Elevation Attained (ft) ............................. 6.44 Max HGL Depth Attained (ft)................................... 6.44 Average HGL Elevation Attained (ft) ....................... 0.72 Average HGL Depth Attained (ft) ............................ 0.72 Time of Max HGL Occurrence (days hh:mm) ......... 0 12:10 Total Exfiltration Volume (1000-ft3) ......................... 0.000 Total Flooded Volume (ac-in)................................. 0 Total Time Flooded (min) ........................................ 0 Total Retention Time (sec) ...................................... 0.00 Storage Node : New_Det_02 Input Data Invert Elevation (ft).................................................. 0.00 Max (Rim) Elevation (ft).......................................... 5.00 Max (Rim) Offset (ft)............................................... 5.00 Initial Water Elevation (ft)....................................... 0.00 Initial Water Depth (ft)............................................. 0.00 Ponded Area (ft').................................................... 0.00 Evaporation Loss .................................................... 0.00 Storage Area Volume Curves Storage Curve : Storage-02 Stage Storage Storage Area Volume (ft) (ft') (ft') 0 0.0000 0.000 0.1 218.4000 10.92 0.2 305.6963 37.12 0.3 370.4795 70.93 0.4 423.2174 110.61 0.5 468.0000 155.17 0.6 506.9400 203.92 0.7 541.2998 256.33 0.8 571.9054 311.99 0.9 599.3324 370.55 1 624.0000 431.72 1.1 646.2242 495.23 1.2 666.2497 560.85 1.3 684.2694 628.38 1.4 700.4383 697.62 1.5 714.8818 768.39 1.6 727.7028 840.52 1.7 738.9857 913.85 1.8 748.8000 988.24 1.9 757.2029 1063.54 2 764.2408 1139.61 2.1 769.9513 1216.32 2.2 774.3636 1293.54 2.3 777.5000 1371.13 2.4 779.3758 1448.97 2.5 780.0000 1526.94 2.6 779.3758 1604.91 2.7 777.5000 1682.75 2.8 774.3636 1760.34 2.9 769.9513 1837.56 3 764.2408 1914.27 3.1 757.2029 1990.34 3.2 748.8000 2065.64 3.3 738.9857 2140.03 3.4 727.7028 2213.36 3.5 714.8818 2285.49 3.6 700.4383 2356.26 3.7 684.2694 2425.50 3.8 666.2497 2493.03 3.9 646.2242 2558.65 4 624.0000 2622.16 4.1 599.3324 2683.33 4.2 571.9054 2741.89 4.3 541.2998 2797.55 4.4 506.9400 2849.96 4.5 468.0000 2898.71 4.6 423.2174 2943.27 4.7 370.4795 2982.95 4.8 305.6963 3016.76 4.9 218.4000 3042.96 5 0.0000 3053.88 5 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 2.9 2.8 2.7 v 2.6 2.6 2.4 2.3 2.2 2.1 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 4.6 0.6 0.4 0.3 0.2 0.1 0 Storage Area Volume Curves Storage Volume (ft) 0 200 400 Goo 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 2,600 2,800 3,000 0 50 100 150 200 250 300 350 400 450 500 5�4 600 650 700 750 Storage Area (M - Storage Area - Storage Volume 5 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 Storage Node : New_Det_02 (continued) Output Summary Results Peak Inflow (cfs)..................................................... 2.93 Peak Lateral Inflow (cfs)......................................... 2.93 Peak Outflow (cfs)................................................... 0.48 Peak Exfiltration Flow Rate (cfm) ........................... 0.00 Max HGL Elevation Attained (ft) ............................. 4.06 Max HGL Depth Attained (ft)................................... 4.06 Average HGL Elevation Attained (ft) ....................... 0.47 Average HGL Depth Attained (ft) ............................ 0.47 Time of Max HGL Occurrence (days hh:mm) ......... 0 12:08 Total Exfiltration Volume (1000-ft3) ......................... 0.000 Total Flooded Volume (ac-in)................................. 0 Total Time Flooded (min) ........................................ 0 Total Retention Time (sec) ...................................... 0.00