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HomeMy WebLinkAboutWPO202100063 Study 2021-12-061 S 8S (10S) 9S DIN B#4 DAB#1 DA B#2 DAB#3 2P 5P 7P 9P SB#1 SB#2 SB#3 SB#4 Subcat Reach on Link Routing Diagram for Dunlora WPO Prepared by HP Inc., Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 02020 HydroCAD Software Solutions LLC Dunlora WPO Prepared by HP Inc. HvdroCAD® 10.10-6a s/n 08126 © 2020 Software Solutions LLC Area Listing (all nodes) Area C Description (acres) (subcatchment-numbers) 39.900 0.60 (1S, 8S, 9S, 10S) 39.900 0.60 TOTAL AREA Sement Basin Routing Summaries Printed 12/6/2021 Dunlora WPO Prepared by HP Inc. HvdroCAD® 10.10-6a s/n 08126 © 2020 Software Solutions LLC Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 0.000 HSG D 39.900 Other 1S, 8S, 9S, 10S 39.900 TOTAL AREA Sement Basin Routing Summaries Printed 12/6/2021 Sement Basin Routing Summaries Dunlora WPO Prepared by HP Inc. HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground (acres) (acres) (acres) (acres) (acres) (acres) Cover 0.000 0.000 0.000 0.000 39.900 39.900 0.000 0.000 0.000 0.000 39.900 39.900 TOTAL AREA Printed 12/6/2021 Subcatchment Numbers 1 S, 8S, 9S, 10S Dunlora WPO Prepared by HP Inc. HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Sement Basin Routing Summaries Printed 12/6/2021 Page 5 Pipe Listing (all nodes) Line# Node In -Invert Out -Invert Length Slope n Width Diam/Height Inside -Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 2P 380.00 366.00 102.0 0.1373 0.020 0.0 36.0 0.0 2 5P 374.00 373.00 102.0 0.0098 0.020 0.0 24.0 0.0 3 7P 368.00 366.00 112.7 0.0177 0.020 0.0 42.0 0.0 4 9P 362.00 361.75 48.0 0.0052 0.020 0.0 24.0 0.0 Sement Basin Routing Summaries Durli WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HVdroCADO 10.10-6a s/n 08126 © 2020 HVdroCAD Software Solutions LLC Paae 6 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1S: DA-SB#1 Runoff Area=9.900 ac 0.00% Impervious Runoff Depth=0.40" Tc=10.0 min C=0.60 Runoff=17.25 cfs 0.333 of Subcatchment 8S: DA S13#3 Runoff Area=16.900 ac 0.00% Impervious Runoff Depth=0.38" Tc=15.0 min C=0.60 Runoff=27.14 cfs 0.530 of Subcatchment 9S: DA SB#2 Runoff Area=8.000 ac 0.00% Impervious Runoff Depth=0.40" Tc=10.0 min C=0.60 Runoff=13.94 cfs 0.269 of Subcatchment 10S: DA SB#4 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth=0.40" Tc=10.0 min C=0.60 Runoff=8.89 cfs 0.171 of Pond 2P: SB#1 Peak EIev=390.99' Storage=66,320 cf Inflow=17.25 cfs 0.333 of Outflow=14.25 cfs 0.333 of Pond 5P: SB#2 Peak EIev=390.38' Storage=36,019 cf Inflow=13.94 cfs 0.269 of Outflow=45.56 cfs 0.449 of Pond 7P: SB#3 Peak EIev=379.13' Storage=105,110 cf Inflow=27.14 cfs 0.530 of Primary=19.89 cfs 0.530 of Secondary=0.00 cfs 0.000 of Outflow=19.89 cfs 0.530 of Pond 9P: SB#4 Peak EIev=368.15' Storage=20,224 cf Inflow=8.89 cfs 0.171 of Outflow=8.45 cfs 0.171 of Total Runoff Area = 39.900 ac Runoff Volume = 1.302 of Average Runoff Depth = 0.39" 100.00% Pervious = 39.900 ac 0.00% Impervious = 0.000 ac Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 1S: DA-SB#1 Runoff = 17.25 cfs @ 0.17 hrs, Volume= 0.333 af, Depth= 0.40" Routed to Pond 2P : SB#1 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Area (ac) C Description 9.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 1S: DA-SB#1 Hydrograph II/ Runoff Tc=10.0 min -..----..-- MMMMMMMMMM .........MMMMM .....� 0.60 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 (hours) ■ Rurwff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 8S: DA S113#3 [48] Hint: Peak<CiA due to short duration Runoff = 27.14 cfs @ 0.23 hrs, Volume= 0.530 af, Depth= 0.38" Routed to Pond 7P : SB#3 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr 16.900 0.60 16.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment 8S: DA S113#3 Hydrograph ■ Rurwff Time (horns) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 9S: DA S113#2 Runoff = 13.94 cfs @ 0.17 hrs, Volume= 0.269 af, Depth= 0.40" Routed to Pond 5P : SB#2 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Area (ac) C Description 8.000 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DA S113#2 Hydrograph W ■■ •. 0 • • • S • • - i N - . • . - . - . - , t 610 ■■■■■■■ ■■■■■■■■■■■ O - 1 I� ■■■■■■■■■■■ ■■■■■■■■■■■■ ■■■■■■■■■■■ ■■■■■■■■■■ ■■■■■■■■■ ■■■■■■■■■■ ■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■■■■■■ ,0100" 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 (hours) ■ Rurwff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 10S: DA SB#4 Runoff = 8.89 cfs @ 0.17 hrs, Volume= 0.171 af, Depth= 0.40" Routed to Pond 9P : SB#4 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Area (ac) C Description 5.100 0.60 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 10S: DA S113#4 Hydrograph iL ■■■■■■■■■■■■■■■■C��■ HOM�.������������������������������������������������������������������������������������������ ■■W■■■■■■■■■■■■■ 1111 Time (houm) O Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 11 Summary for Pond 2P: SB#1 Inflow Area = 9.900 ac, 0.00% Impervious, Inflow Depth = 0.40" for 1-yr event Inflow = 17.25 cfs @ 0.17 hrs, Volume= 0.333 of Outflow = 14.25 cfs @ 0.26 hrs, Volume= 0.333 af, Atten= 17%, Lag= 5.6 min Primary = 14.25 cfs @ 0.26 hrs, Volume= 0.333 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.50' Surf.Area= 10,499 sf Storage= 61,033 cf Peak Elev= 390.99' @ 0.26 hrs Surf.Area= 11,006 sf Storage= 66,320 cf (5,288 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 8.0 min ( 20.0 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 380.00' 77,941 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 380.00 1,012 0 0 382.00 2,242 3,254 3,254 384.00 4,890 7,132 10,386 386.00 6,922 11,812 22,198 388.00 8,404 15,326 37,524 390.00 9,984 18,388 55,912 392.00 12,045 22,029 77,941 Device Routing Invert Outlet Devices #1 Primary 380.00' 36.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 380.00' / 366.00' S= 0.1373 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 7.07 sf #2 Device 1 390.50' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 391.50' 16.0' long x 16.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=14.16 cfs @ 0.26 hrs HW=390.99' (Free Discharge) �1=Culvert (Passes 14.16 cfs of 92.52 cfs potential flow) L2=Orifice/Grate (Weir Controls 14.16 cfs @ 2.29 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 Whr Prepared by HP Inc. Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Paoe 12 Pond 2P: SB#1 ■ Inflow ■ Pdmary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 13 Summary for Pond 5P: S113#2 Inflow Area = 8.000 ac, 0.00% Impervious, Inflow Depth = 0.40" for 1-yr event Inflow = 13.94 cfs @ 0.17 hrs, Volume= 0.269 of Outflow = 45.56 cfs @ 0.00 hrs, Volume= 0.449 af, Atten= 0%, Lag= 0.0 min Primary = 45.56 cfs @ 0.00 hrs, Volume= 0.449 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.38' Surf.Area= 6,819 sf Storage= 36,019 cf Peak Elev= 390.38' @ 0.00 hrs Surf.Area= 6,819 sf Storage= 36,019 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 384.00' 49,058 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 384.00 2,125 0 0 386.00 4,875 7,000 7,000 388.00 7,710 12,585 19,585 390.00 6,242 13,952 33,537 392.00 9,279 15,521 49,058 Device Routing Invert Outlet Devices #1 Primary 374.00' 24.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 374.00' / 373.00' S= 0.0098 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 389.30' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=45.56 cfs @ 0.00 hrs HW=390.38' (Free Discharge) L1=Culvert (Barrel Controls 45.56 cfs @ 14.50 fps) t2=Orifice/Grate (Passes 45.56 cfs of 46.12 cfs potential flow) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 Whr Prepared by HP Inc. Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Paoe 14 Pond 5P: SB#2 Hydrograph ■■■■■■■ .■■■ ■■■■■■�■ ■ • i r ■■■■■■■■■■■■Peak ■■■■■■■■■■■■■■■■■■■■■■ ■..■■■■ .....■■■■■ ■■■■■ ■■■■■■■■ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 29 24 Time (hours) ■ Inflow ■ Pdmary Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 15 Summary for Pond 7P: SB#3 Inflow Area = 16.900 ac, 0.00% Impervious, Inflow Depth = 0.38" for 1-yr event Inflow = 27.14 cfs @ 0.23 hrs, Volume= 0.530 of Outflow = 19.89 cfs @ 0.30 hrs, Volume= 0.530 af, Atten= 27%, Lag= 3.9 min Primary = 19.89 cfs @ 0.30 hrs, Volume= 0.530 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 378.60' Surf.Area= 15,761 sf Storage= 96,618 cf Peak Elev= 379.13' @ 0.30 hrs Surf.Area= 16,341 sf Storage= 105,110 cf (8,491 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 9.3 min ( 23.3 - 14.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 156,612 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 2,576 0 0 372.00 6,346 17,844 17,844 374.00 11,021 17,367 35,211 376.00 13,012 24,033 59,244 378.00 15,103 28,115 87,359 380.00 17,296 32,399 119,758 382.00 19,558 36,854 156,612 Device Routino Invert Outlet Devices #1 Primary 368.00' 42.0" Round Culvert L= 112.7' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 368.00' / 366.00' S= 0.0177 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 9.62 sf #2 Device 1 378.60' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 379.70' 15.0' long x 12.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.57 2.62 2.70 2.67 2.66 2.67 2.66 2.64 Primary OutFlow Max=19.75 cfs @ 0.30 hrs HW=379.13' (Free Discharge) L1=Culvert (Passes 19.75 cfs of 125.18 cfs potential flow) t2=Orifice/Grate (Weir Controls 19.75 cfs @ 2.38 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=378.60' (Free Discharge) t3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdrOCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 16 Pond 7P: SB#3 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 17 Summary for Pond 9P: SB#4 Inflow Area = 5.100 ac, 0.00% Impervious, Inflow Depth = 0.40" for 1-yr event Inflow = 8.89 cfs @ 0.17 hrs, Volume= 0.171 of Outflow = 8.45 cfs @ 0.24 hrs, Volume= 0.171 af, Atten= 5%, Lag= 4.3 min Primary = 8.45 cfs @ 0.24 hrs, Volume= 0.171 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 367.80' Surf.Area= 4,734 sf Storage= 18,543 cf Peak Elev= 368.15' @ 0.24 hrs Surf.Area= 4,936 sf Storage= 20,224 cf (1,681 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 4.1 min ( 16.1 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 362.00' 30,413 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 362.00 1,789 0 0 364.00 2,707 4,496 4,496 366.00 3,726 6,433 10,929 368.00 4,846 8,572 19,501 370.00 6,066 10,912 30,413 Device Routing Invert Outlet Devices #1 Primary 362.00' 24.0" Round Culvert L= 48.0' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 362.00' / 361.75' S= 0.0052 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 367.80' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=8.42 cfs @ 0.24 hrs HW=368.15' (Free Discharge) L1=Culvert (Passes 8.42 cfs of 29.95 cfs potential flow) t2=Orifice/Grate (Weir Controls 8.42 cfs @ 1.93 fps) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 1-yr Duration=14 min, Inten=2.88 Whr Prepared by HP Inc. Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Paoe 18 Pond 9P: SB" Hydrograph 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (houm) PAP IP P, IRO� ■■■■■■■■■■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■■ ■ Inflow ■ Pdmary Sement Basin Routing Summaries Durli WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HVdroCAD® 10.10-6a s/n 08126 © 2020 HVdroCAD Software Solutions LLC Paoe 19 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1S: DA-SB#1 Runoff Area=9.900 ac 0.00% Impervious Runoff Depth=0.48" Tc=10.0 min C=0.60 Runoff=20.74 cfs 0.400 of Subcatchment 8S: DA S13#3 Runoff Area=16.900 ac 0.00% Impervious Runoff Depth=0.45" Tc=15.0 min C=0.60 Runoff=32.63 cfs 0.637 of Subcatchment 9S: DA SB#2 Runoff Area=8.000 ac 0.00% Impervious Runoff Depth=0.48" Tc=10.0 min C=0.60 Runoff=16.76 cfs 0.323 of Subcatchment 10S: DA SB#4 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth=0.48" Tc=10.0 min C=0.60 Runoff=10.68 cfs 0.206 of Pond 2P: SB#1 Peak EIev=391.06' Storage=67,121 cf Inflow=20.74 cfs 0.400 of Outflow=17.46 cfs 0.400 of Pond 5P: SB#2 Peak EIev=390.38' Storage=36,019 cf Inflow=16.76 cfs 0.323 of Outflow=45.56 cfs 0.503 of Pond 7P: SB#3 Peak EIev=379.21' Storage=106,409 cf Inflow=32.63 cfs 0.637 of Primary=24.40 cfs 0.637 of Secondary=0.00 cfs 0.000 of Outflow=24.40 cfs 0.637 of Pond 9P: SB#4 Peak EIev=368.20' Storage=20,459 cf Inflow=10.68 cfs 0.206 of Outflow=10.25 cfs 0.206 of Total Runoff Area = 39.900 ac Runoff Volume = 1.566 of Average Runoff Depth = 0.47" 100.00% Pervious = 39.900 ac 0.00% Impervious = 0.000 ac Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 20 Summary for Subcatchment 1S: DA-SB#1 Runoff = 20.74 cfs @ 0.17 hrs, Volume= 0.400 af, Depth= 0.48" Routed to Pond 2P : SB#1 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 2-yr Duration=14 min, Inten=3.46 in/hr Area (ac) C Description 9.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, F Subcatchment 1S: DA-SB#1 Hydrograph 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 (hours) O Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 21 Summary for Subcatchment 8S: DA S113#3 [48] Hint: Peak<CiA due to short duration Runoff = 32.63 cfs @ 0.23 hrs, Volume= 0.637 af, Depth= 0.45" Routed to Pond 7P : SB#3 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 2-yr Duration=14 min, Inten=3.46 in/hr 16.900 0.60 16.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment 8S: DA S113#3 Hydrograph ■ Rurgff Time (hours) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 22 Summary for Subcatchment 9S: DA S113#2 Runoff = 16.76 cfs @ 0.17 hrs, Volume= 0.323 af, Depth= 0.48" Routed to Pond 5P : SB#2 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 2-yr Duration=14 min, Inten=3.46 in/hr Area (ac) C Description 8.000 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DA S113#2 Hydrograph Ei / II0 I0 NT • i - -. mmmommmmmmm -_-------_-.- MONK MOEN _M_MMM_M___ MMEMEMEMI■EMMENI• EMENIM ■ homn" -------------------------------------------------------------------- 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 (hours) ❑ Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 10S: DA SB#4 Runoff = 10.68 cfs @ 0.17 hrs, Volume= 0.206 af, Depth= 0.48" Routed to Pond 9P : SB#4 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 2-yr Duration=14 min, Inten=3.46 in/hr Area (ac) C Description 5.100 0.60 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 10S: DA S113#4 Hydrograph ' • • . . • - MENNEN • / I� I% MEMEMEME ..........■ ■........■ ........... MOMMOMM..E. ...MEME....� MEMEMOMMEMEMEME ■■■■■■■ .■■■■■■■■■■■■ ■■ ■■■WM■■ 1/ -------------------------------------------------------- 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 (hours) ■ Rurwff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 24 Summary for Pond 2P: SB#1 Inflow Area = 9.900 ac, 0.00% Impervious, Inflow Depth = 0.48" for 2-yr event Inflow = 20.74 cfs @ 0.17 hrs, Volume= 0.400 of Outflow = 17.46 cfs @ 0.26 hrs, Volume= 0.400 af, Atten= 16%, Lag= 5.4 min Primary = 17.46 cfs @ 0.26 hrs, Volume= 0.400 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.50' Surf.Area= 10,499 sf Storage= 61,033 cf Peak Elev= 391.06' @ 0.26 hrs Surf.Area= 11,081 sf Storage= 67,121 cf (6,088 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 7.5 min ( 19.5 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 380.00' 77,941 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 380.00 1,012 0 0 382.00 2,242 3,254 3,254 384.00 4,890 7,132 10,386 386.00 6,922 11,812 22,198 388.00 8,404 15,326 37,524 390.00 9,984 18,388 55,912 392.00 12,045 22,029 77,941 Device Routing Invert Outlet Devices #1 Primary 380.00' 36.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 380.00' / 366.00' S= 0.1373 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 7.07 sf #2 Device 1 390.50' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 391.50' 16.0' long x 16.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=17.41 cfs @ 0.26 hrs HW=391.06' (Free Discharge) �1=Culvert (Passes 17.41 cfs of 92.87 cfs potential flow) L2=Orifice/Grate (Weir Controls 17.41 cfs @ 2.46 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 25 Pond 2P: SB#1 Hydrograph F Inflow ❑ Primary V 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 26 Summary for Pond 5P: S113#2 Inflow Area = 8.000 ac, 0.00% Impervious, Inflow Depth = 0.48" for 2-yr event Inflow = 16.76 cfs @ 0.17 hrs, Volume= 0.323 of Outflow = 45.56 cfs @ 0.00 hrs, Volume= 0.503 af, Atten= 0%, Lag= 0.0 min Primary = 45.56 cfs @ 0.00 hrs, Volume= 0.503 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.38' Surf.Area= 6,819 sf Storage= 36,019 cf Peak Elev= 390.38' @ 0.00 hrs Surf.Area= 6,819 sf Storage= 36,019 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= (not calculated: outflow precedes inflow) Volume Invert Avail.Storage Storage Description #1 384.00' 49,058 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 384.00 2,125 0 0 386.00 4,875 7,000 7,000 388.00 7,710 12,585 19,585 390.00 6,242 13,952 33,537 392.00 9,279 15,521 49,058 Device Routing Invert Outlet Devices #1 Primary 374.00' 24.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 374.00' / 373.00' S= 0.0098 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 389.30' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=45.56 cfs @ 0.00 hrs HW=390.38' (Free Discharge) L1=Culvert (Barrel Controls 45.56 cfs @ 14.50 fps) t2=Orifice/Grate (Passes 45.56 cfs of 46.12 cfs potential flow) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Paoe 27 Pond 5P: SB#2 Hydrograph rid, NONSENSE ■■■ • A rR .0 • i 1 11 ■■■■■■■■S■■■ 11,E ■■■■■■■■■■■■■■■■■■■■■■■ 1 (,/ .I �0� SENSE ■ ONSOMM■■■■ SEEMS ■N■■NN■■ ' 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 (hours) ■ Inflow ■ Primary Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 28 Summary for Pond 7P: SB#3 Inflow Area = 16.900 ac, 0.00% Impervious, Inflow Depth = 0.45" for 2-yr event Inflow = 32.63 cfs @ 0.23 hrs, Volume= 0.637 of Outflow = 24.40 cfs @ 0.29 hrs, Volume= 0.637 af, Atten= 25%, Lag= 3.7 min Primary = 24.40 cfs @ 0.29 hrs, Volume= 0.637 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 378.60' Surf.Area= 15,761 sf Storage= 96,618 cf Peak Elev= 379.21' @ 0.29 hrs Surf.Area= 16,428 sf Storage= 106,409 cf (9,791 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 8.7 min ( 22.7 - 14.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 156,612 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 2,576 0 0 372.00 6,346 17,844 17,844 374.00 11,021 17,367 35,211 376.00 13,012 24,033 59,244 378.00 15,103 28,115 87,359 380.00 17,296 32,399 119,758 382.00 19,558 36,854 156,612 Device Routing Invert Outlet Devices #1 Primary 368.00' 42.0" Round Culvert L= 112.7' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 368.00' / 366.00' S= 0.0177 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 9.62 sf #2 Device 1 378.60' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 379.70' 15.0' long x 12.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.57 2.62 2.70 2.67 2.66 2.67 2.66 2.64 Primary OutFlow Max=24.35 cfs @ 0.29 hrs HW=379.21' (Free Discharge) L1=Culvert (Passes 24.35 cfs of 125.71 cfs potential flow) t2=Orifice/Grate (Weir Controls 24.35 cfs @ 2.55 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=378.60' (Free Discharge) t3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdrOCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 29 Pond 7P: SB#3 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 @ 2020 HydroCAD Software Solutions LLC Page 30 Summary for Pond 9P: SB#4 Inflow Area = 5.100 ac, 0.00% Impervious, Inflow Depth = 0.48" for 2-yr event Inflow = 10.68 cfs @ 0.17 hrs, Volume= 0.206 of Outflow = 10.25 cfs @ 0.24 hrs, Volume= 0.206 af, Atten= 4%, Lag= 4.2 min Primary = 10.25 cfs @ 0.24 hrs, Volume= 0.206 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 367.80' Surf.Area= 4,734 sf Storage= 18,543 cf Peak Elev= 368.20' @ 0.24 hrs Surf.Area= 4,965 sf Storage= 20,459 cf (1,916 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 3.8 min ( 15.8 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 362.00' 30,413 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 362.00 1,789 0 0 364.00 2,707 4,496 4,496 366.00 3,726 6,433 10,929 368.00 4,846 8,572 19,501 370.00 6,066 10,912 30,413 Device Routing Invert Outlet Devices #1 Primary 362.00' 24.0" Round Culvert L= 48.0' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 362.00' / 361.75' S= 0.0052 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 367.80' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=10.21 cfs @ 0.24 hrs HW=368.20' (Free Discharge) L1=Culvert (Passes 10.21 cfs of 30.11 cfs potential flow) t2=Orifice/Grate (Weir Controls 10.21 cfs @ 2.06 fps) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall2-yr Duration=14 min, Inten=3.46 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCADO 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Paoe 31 /■■■■■■■■MEN IN■■■■■■■■■■■ NONE ■■■■■■■■■■■■■■■■■■ P, OVA I1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (houm) ■ Inflow ■ Primary Sement Basin Routing Summaries Durli WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HVdroCAD® 10.10-6a s/n 08126 © 2020 HVdroCAD Software Solutions LLC Paoe 32 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1S: DA-SB#1 Runoff Area=9.900 ac 0.00% Impervious Runoff Depth=0.64" Tc=10.0 min C=0.60 Runoff=27.61 cfs 0.532 of Subcatchment 8S: DA S13#3 Runoff Area=16.900 ac 0.00% Impervious Runoff Depth=0.60" Tc=15.0 min C=0.60 Runoff=43.44 cfs 0.848 of Subcatchment 9S: DA SB#2 Runoff Area=8.000 ac 0.00% Impervious Runoff Depth=0.64" Tc=10.0 min C=0.60 Runoff=22.31 cfs 0.430 of Subcatchment 10S: DA SB#4 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth=0.64" Tc=10.0 min C=0.60 Runoff=14.22 cfs 0.274 of Pond 2P: SB#1 Peak EIev=391.20' Storage=68,590 cf Inflow=27.61 cfs 0.532 of Outflow=23.92 cfs 0.532 of Pond 5P: SB#2 Peak EIev=390.38' Storage=36,019 cf Inflow=22.31 cfs 0.430 of Outflow=45.56 cfs 0.610 of Pond 7P: SB#3 Peak EIev=379.35' Storage=108,788 cf Inflow=43.44 cfs 0.848 of Primary=33.56 cfs 0.848 of Secondary=0.00 cfs 0.000 of Outflow=33.56 cfs 0.848 of Pond 9P: SB#4 Peak EIev=368.28' Storage=20,891 cf Inflow=14.22 cfs 0.274 of Outflow=13.78 cfs 0.274 of Total Runoff Area = 39.900 ac Runoff Volume = 2.084 of Average Runoff Depth = 0.63" 100.00% Pervious = 39.900 ac 0.00% Impervious = 0.000 ac Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 33 Summary for Subcatchment 1S: DA-SB#1 Runoff = 27.61 cfs @ 0.17 hrs, Volume= 0.532 af, Depth= 0.64" Routed to Pond 2P : SB#1 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Area (ac) C Description 9.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 1S: DA-SB#1 Hydrograph ® 1 I/ I� • • emarle Rainfall 10-yr- • , _Runoff• • . • _ ■■■mmm- ■■ ■■■■■■■■ ■■■■■■■■■ ■■■■■■■■■■�■ ■■■■■■■■■■■ ■■■■■■■■■■■ MMMMMMMMMMMIRunoff ■■■■■■■■■■■ ■■■■■■■■■■■■ ■■■■■■■■■■■■■■■■iii I/ ■■■■■■■■■■■■■■■■■■■■■■ 1 ��-----���-��-��--���-���-���------- 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 (hours) O Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 34 Summary for Subcatchment 8S: DA S113#3 [48] Hint: Peak<CiA due to short duration Runoff = 43.44 cfs @ 0.23 hrs, Volume= 0.848 af, Depth= 0.60" Routed to Pond 7P : SB#3 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr 16.900 0.60 16.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, w 0 Subcatchment 8S: DA S113#3 Hydrograph MMMMM MMMMM I M�M1a 1-1fli i7l I IN I IMTTM MMMMMMMMMMMMMM-mmmmmmmmmmmmm �l1TFT.�31 T�1:M ------------- mmmmmmmmmmm �� mmmmmmmmmmmmmmm I� mmmmmmmmmmmmmmm� mmmmmmmmmmmmm o .m I� �mmmmmmmmmmmmmmm� I� mmmmmmmmmmmmmmmmmm��� mmmmmmmmmmmmmmm I/ 1 L J 4 b b / b 9 1U it iZ 13 14 10 le 1/ 16 18 2e 21 u Z7 24 Time (hours) ■ Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 35 Summary for Subcatchment 9S: DA S113#2 Runoff = 22.31 cfs @ 0.17 hrs, Volume= 0.430 af, Depth= 0.64" Routed to Pond 5P : SB#2 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Area (ac) C Description 8.000 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DA S113#2 Hydrograph ■ Rurwff Time (hours) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 36 Summary for Subcatchment 10S: DA SB#4 Runoff = 14.22 cfs @ 0.17 hrs, Volume= 0.274 af, Depth= 0.64" Routed to Pond 9P : SB#4 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Area (ac) C Description 5.100 0.60 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 10S: DA S113#4 Hydrograph ■ Rurwff 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 (hours) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 37 Summary for Pond 2P: SB#1 Inflow Area = 9.900 ac, 0.00% Impervious, Inflow Depth = 0.64" for 10-yr event Inflow = 27.61 cfs @ 0.17 hrs, Volume= 0.532 of Outflow = 23.92 cfs @ 0.26 hrs, Volume= 0.532 af, Atten= 13%, Lag= 5.2 min Primary = 23.92 cfs @ 0.26 hrs, Volume= 0.532 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.50' Surf.Area= 10,499 sf Storage= 61,033 cf Peak Elev= 391.20' @ 0.26 hrs Surf.Area= 11,217 sf Storage= 68,590 cf (7,557 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 6.8 min ( 18.8 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 380.00' 77,941 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 380.00 1,012 0 0 382.00 2,242 3,254 3,254 384.00 4,890 7,132 10,386 386.00 6,922 11,812 22,198 388.00 8,404 15,326 37,524 390.00 9,984 18,388 55,912 392.00 12,045 22,029 77,941 Device Routing Invert Outlet Devices #1 Primary 380.00' 36.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 380.00' / 366.00' S= 0.1373 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 7.07 sf #2 Device 1 390.50' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 391.50' 16.0' long x 16.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=23.83 cfs @ 0.26 hrs HW=391.20' (Free Discharge) �1=Culvert (Passes 23.83 cfs of 93.51 cfs potential flow) L2=Orifice/Grate (Weir Controls 23.83 cfs @ 2.73 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 38 Pond 2P: SB#1 Hydrograph ■ Inflow ❑ Primary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 39 Summary for Pond 5P: S113#2 Inflow Area = 8.000 ac, 0.00% Impervious, Inflow Depth = 0.64" for 10-yr event Inflow = 22.31 cfs @ 0.17 hrs, Volume= 0.430 of Outflow = 45.56 cfs @ 0.00 hrs, Volume= 0.610 af, Atten= 0%, Lag= 0.0 min Primary = 45.56 cfs @ 0.00 hrs, Volume= 0.610 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.38' Surf.Area= 6,819 sf Storage= 36,019 cf Peak Elev= 390.38' @ 0.00 hrs Surf.Area= 6,819 sf Storage= 36,019 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 0.2 min ( 12.2 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 384.00' 49,058 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 384.00 2,125 0 0 386.00 4,875 7,000 7,000 388.00 7,710 12,585 19,585 390.00 6,242 13,952 33,537 392.00 9,279 15,521 49,058 Device Routing Invert Outlet Devices #1 Primary 374.00' 24.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 374.00' / 373.00' S= 0.0098 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 389.30' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=45.56 cfs @ 0.00 hrs HW=390.38' (Free Discharge) L1=Culvert (Barrel Controls 45.56 cfs @ 14.50 fps) t2=Orifice/Grate (Passes 45.56 cfs of 46.12 cfs potential flow) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 40 Pond 5P: SB#2 Hydrograph • , soon ME r r� ■■■■■■■■■■■■ monsoons.... .NEESE ■■■■■■■■■■ -A 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 (hours) ❑ Inflow ❑ Primary Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 41 Summary for Pond 7P: SB#3 Inflow Area = 16.900 ac, 0.00% Impervious, Inflow Depth = 0.60" for 10-yr event Inflow = 43.44 cfs @ 0.23 hrs, Volume= 0.848 of Outflow = 33.56 cfs @ 0.29 hrs, Volume= 0.848 af, Atten= 23%, Lag= 3.4 min Primary = 33.56 cfs @ 0.29 hrs, Volume= 0.848 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 378.60' Surf.Area= 15,761 sf Storage= 96,618 cf Peak Elev= 379.35' @ 0.29 hrs Surf.Area= 16,586 sf Storage= 108,788 cf (12,170 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 7.9 min ( 21.9 - 14.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 156,612 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 2,576 0 0 372.00 6,346 17,844 17,844 374.00 11,021 17,367 35,211 376.00 13,012 24,033 59,244 378.00 15,103 28,115 87,359 380.00 17,296 32,399 119,758 382.00 19,558 36,854 156,612 Device Routing Invert Outlet Devices #1 Primary 368.00' 42.0" Round Culvert L= 112.7' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 368.00' / 366.00' S= 0.0177 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 9.62 sf #2 Device 1 378.60' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 379.70' 15.0' long x 12.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.57 2.62 2.70 2.67 2.66 2.67 2.66 2.64 Primary OutFlow Max=33.52 cfs @ 0.29 hrs HW=379.35' (Free Discharge) L1=Culvert (Passes 33.52 cfs of 126.66 cfs potential flow) t2=Orifice/Grate (Weir Controls 33.52 cfs @ 2.84 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=378.60' (Free Discharge) t3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdrOCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 42 Pond 7P: SB#3 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 @ 2020 HydroCAD Software Solutions LLC Page 43 Summary for Pond 9P: SB#4 Inflow Area = 5.100 ac, 0.00% Impervious, Inflow Depth = 0.64" for 10-yr event Inflow = 14.22 cfs @ 0.17 hrs, Volume= 0.274 of Outflow = 13.78 cfs @ 0.24 hrs, Volume= 0.274 af, Atten= 3%, Lag= 4.1 min Primary = 13.78 cfs @ 0.24 hrs, Volume= 0.274 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 367.80' Surf.Area= 4,734 sf Storage= 18,543 cf Peak Elev= 368.28' @ 0.24 hrs Surf.Area= 5,018 sf Storage= 20,891 cf (2,348 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 3.5 min ( 15.5 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 362.00' 30,413 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 362.00 1,789 0 0 364.00 2,707 4,496 4,496 366.00 3,726 6,433 10,929 368.00 4,846 8,572 19,501 370.00 6,066 10,912 30,413 Device Routing Invert Outlet Devices #1 Primary 362.00' 24.0" Round Culvert L= 48.0' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 362.00' / 361.75' S= 0.0052 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 367.80' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=13.73 cfs @ 0.24 hrs HW=368.28' (Free Discharge) L1=Culvert (Passes 13.73 cfs of 30.40 cfs potential flow) t2=Orifice/Grate (Weir Controls 13.73 cfs @ 2.27 fps) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 10-yr Duration=14 min, Inten=4.61 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 44 I F w 0 Pond 9P: SB#4 Hydrograph PAr 10 MEN ME MEN I�00 1,000, ■■■■■■■■�■■■�■■■ ■ ■■■■■■■■■■ ■ ■ ■■■■■■ $0 -------------------------------------------------------------------------------------------------------------------. 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 (hours) ■ Inflow ❑ Primary Sement Basin Routing Summaries Durli WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HVdroCAD® 10.10-6a s/n 08126 © 2020 HVdroCAD Software Solutions LLC Paoe 45 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1S: DA-SB#1 Runoff Area=9.900 ac 0.00% Impervious Runoff Depth=0.73" Tc=10.0 min C=0.60 Runoff=31.05 cfs 0.598 of Subcatchment 8S: DA S13#3 Runoff Area=16.900 ac 0.00% Impervious Runoff Depth=0.68" Tc=15.0 min C=0.60 Runoff=48.86 cfs 0.954 of Subcatchment 9S: DA SB#2 Runoff Area=8.000 ac 0.00% Impervious Runoff Depth=0.73" Tc=10.0 min C=0.60 Runoff=25.09 cfs 0.484 of Subcatchment 10S: DA SB#4 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth=0.73" Tc=10.0 min C=0.60 Runoff=16.00 cfs 0.308 of Pond 2P: SB#1 Peak Elev=391.26' Storage=69,290 cf Inflow=31.05 cfs 0.598 of Outflow=27.17 cfs 0.598 of Pond 5P: SB#2 Peak EIev=390.38' Storage=36,019 cf Inflow=25.09 cfs 0.484 of Outflow=45.56 cfs 0.664 of Pond 7P: SB#3 Peak EIev=379.42' Storage=109,912 cf Inflow=48.86 cfs 0.954 of Primary=38.25 cfs 0.954 of Secondary=0.00 cfs 0.000 of Outflow=38.25 cfs 0.954 of Pond 9P: SB#4 Peak EIev=368.32' Storage=21,097 cf Inflow=16.00 cfs 0.308 of Outflow=15.54 cfs 0.308 of Total Runoff Area = 39.900 ac Runoff Volume = 2.344 of Average Runoff Depth = 0.71" 100.00% Pervious = 39.900 ac 0.00% Impervious = 0.000 ac Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 46 Summary for Subcatchment 1S: DA-SB#1 Runoff = 31.05 cfs @ 0.17 hrs, Volume= 0.598 af, Depth= 0.73" Routed to Pond 2P : SB#1 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 25-yr Duration=14 min, Inten=5.18 in/hr Area (ac) C Description 9.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 1S: DA-SB#1 Hydrograph . , ,, . 10 ,• I/ I� I� ■■■■■■■■ ■■■■■■■■ ■■■■■■■■■■■ ■■■■■■■■■ . ----- 0 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) O Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 47 Summary for Subcatchment 8S: DA S113#3 [48] Hint: Peak<CiA due to short duration Runoff = 48.86 cfs @ 0.23 hrs, Volume= 0.954 af, Depth= 0.68" Routed to Pond 7P : SB#3 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 25-yr Duration=14 min, Inten=5.18 in/hr 16.900 0.60 16.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment 8S: DA S113#3 Hydrograph SENSEMENEM • _ • • : .1 •• 1 1 • • 1 .: MENEM■�■■ ■ENE■MEMOMMOMMEM ■■■ ■E■E■E■E■■■ ■■■■ESE■■■■ U 1 L J 4 b b / b 9 1U it iZ 13 14 10 le 1/ 16 18 ZU 21 u Z9 L4 Time (lams) ■ Rurwff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 48 Summary for Subcatchment 9S: DA S113#2 Runoff = 25.09 cfs @ 0.17 hrs, Volume= 0.484 af, Depth= 0.73" Routed to Pond 5P : SB#2 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 25-yr Duration=14 min, Inten=5.18 in/hr Area (ac) C Description 8.000 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DA S113#2 Hydrograph ■ Rurwff 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 (hours) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 49 Summary for Subcatchment 10S: DA SB#4 Runoff = 16.00 cfs @ 0.17 hrs, Volume= 0.308 af, Depth= 0.73" Routed to Pond 9P : SB#4 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 25-yr Duration=14 min, Inten=5.18 in/hr Area (ac) C Description 5.100 0.60 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 10S: DA S113#4 Hydrograph MM iSee 11111 III,..III,III,III,III,III, • / I/ I� / ���������MEE 11111111111111'11111111111111111111111111111'111111111111111MMMMMMMMMMMMMMMMMM 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 (hours) ❑ Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 50 Summary for Pond 2P: SB#1 Inflow Area = 9.900 ac, 0.00% Impervious, Inflow Depth = 0.73" for 25-yr event Inflow = 31.05 cfs @ 0.17 hrs, Volume= 0.598 of Outflow = 27.17 cfs @ 0.25 hrs, Volume= 0.598 af, Atten= 13%, Lag= 5.1 min Primary = 27.17 cfs @ 0.25 hrs, Volume= 0.598 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.50' Surf.Area= 10,499 sf Storage= 61,033 cf Peak Elev= 391.26' @ 0.25 hrs Surf.Area= 11,281 sf Storage= 69,290 cf (8,257 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 6.5 min ( 18.5 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 380.00' 77,941 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 380.00 1,012 0 0 382.00 2,242 3,254 3,254 384.00 4,890 7,132 10,386 386.00 6,922 11,812 22,198 388.00 8,404 15,326 37,524 390.00 9,984 18,388 55,912 392.00 12,045 22,029 77,941 Device Routing Invert Outlet Devices #1 Primary 380.00' 36.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 380.00' / 366.00' S= 0.1373 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 7.07 sf #2 Device 1 390.50' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 391.50' 16.0' long x 16.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=27.09 cfs @ 0.25 hrs HW=391.26' (Free Discharge) �1=Culvert (Passes 27.09 cfs of 93.81 cfs potential flow) L2=Orifice/Grate (Weir Controls 27.09 cfs @ 2.85 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 51 Pond 2P: SB#1 Hydrograph ■ Inflow ❑ Primary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 52 Summary for Pond 5P: S113#2 Inflow Area = 8.000 ac, 0.00% Impervious, Inflow Depth = 0.73" for 25-yr event Inflow = 25.09 cfs @ 0.17 hrs, Volume= 0.484 of Outflow = 45.56 cfs @ 0.00 hrs, Volume= 0.664 af, Atten= 0%, Lag= 0.0 min Primary = 45.56 cfs @ 0.00 hrs, Volume= 0.664 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.38' Surf.Area= 6,819 sf Storage= 36,019 cf Peak Elev= 390.38' @ 0.00 hrs Surf.Area= 6,819 sf Storage= 36,019 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 0.4 min ( 12.4 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 384.00' 49,058 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 384.00 2,125 0 0 386.00 4,875 7,000 7,000 388.00 7,710 12,585 19,585 390.00 6,242 13,952 33,537 392.00 9,279 15,521 49,058 Device Routing Invert Outlet Devices #1 Primary 374.00' 24.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 374.00' / 373.00' S= 0.0098 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 389.30' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=45.56 cfs @ 0.00 hrs HW=390.38' (Free Discharge) L1=Culvert (Barrel Controls 45.56 cfs @ 14.50 fps) t2=Orifice/Grate (Passes 45.56 cfs of 46.12 cfs potential flow) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 53 Pond 5P: SB#2 Hydrograph r soon ME MENOMONEE on mossonsommon ins onsommonsons ......................n Ir;000 .....................n 000 00 !� omoommmmmm .NEESE ■■■■■■■■■■ 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 Tim (hours) ❑ Inflow ❑ Primary Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 54 Summary for Pond 7P: SB#3 Inflow Area = 16.900 ac, 0.00% Impervious, Inflow Depth = 0.68" for 25-yr event Inflow = 48.86 cfs @ 0.23 hrs, Volume= 0.954 of Outflow = 38.25 cfs @ 0.29 hrs, Volume= 0.954 af, Atten= 22%, Lag= 3.2 min Primary = 38.25 cfs @ 0.29 hrs, Volume= 0.954 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 378.60' Surf.Area= 15,761 sf Storage= 96,618 cf Peak Elev= 379.42' @ 0.29 hrs Surf.Area= 16,660 sf Storage= 109,912 cf (13,294 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 7.5 min ( 21.5 - 14.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 156,612 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 2,576 0 0 372.00 6,346 17,844 17,844 374.00 11,021 17,367 35,211 376.00 13,012 24,033 59,244 378.00 15,103 28,115 87,359 380.00 17,296 32,399 119,758 382.00 19,558 36,854 156,612 Device Routino Invert Outlet Devices #1 Primary 368.00' 42.0" Round Culvert L= 112.7' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 368.00' / 366.00' S= 0.0177 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 9.62 sf #2 Device 1 378.60' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 379.70' 15.0' long x 12.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.57 2.62 2.70 2.67 2.66 2.67 2.66 2.64 Primary OutFlow Max=38.11 cfs @ 0.29 hrs HW=379.42' (Free Discharge) L1=Culvert (Passes 38.11 cfs of 127.11 cfs potential flow) t2=Orifice/Grate (Weir Controls 38.11 cfs @ 2.96 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=378.60' (Free Discharge) t3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdrOCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 55 Pond 7P: SB#3 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 @ 2020 HydroCAD Software Solutions LLC Page 56 Summary for Pond 9P: SB#4 Inflow Area = 5.100 ac, 0.00% Impervious, Inflow Depth = 0.73" for 25-yr event Inflow = 16.00 cfs @ 0.17 hrs, Volume= 0.308 of Outflow = 15.54 cfs @ 0.24 hrs, Volume= 0.308 af, Atten= 3%, Lag= 4.0 min Primary = 15.54 cfs @ 0.24 hrs, Volume= 0.308 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 367.80' Surf.Area= 4,734 sf Storage= 18,543 cf Peak Elev= 368.32' @ 0.24 hrs Surf.Area= 5,043 sf Storage= 21,097 cf (2,554 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 3.3 min ( 15.3 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 362.00' 30,413 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 362.00 1,789 0 0 364.00 2,707 4,496 4,496 366.00 3,726 6,433 10,929 368.00 4,846 8,572 19,501 370.00 6,066 10,912 30,413 Device Routing Invert Outlet Devices #1 Primary 362.00' 24.0" Round Culvert L= 48.0' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 362.00' / 361.75' S= 0.0052 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 367.80' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=15.51 cfs @ 0.24 hrs HW=368.32' (Free Discharge) L1=Culvert (Passes 15.51 cfs of 30.54 cfs potential flow) t2=Orifice/Grate (Weir Controls 15.51 cfs @ 2.36 fps) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall25-yr Duration=14 min, Inten=5.18 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 57 17 15 14 13 ,2 11 10 3 9 LL 8 7 6 5 4 3 2 , 0 Pond 9P: SB#4 Hydrograph €i■■MEM■■■■MInflow ■■■■■■ MINE MINE • • wIN { /I ■■■■■■■■■■ ■■■■■■■■MINE EEEEEEEEEEIN /� ■EM■ME■MIN■M■M■EM■MM■■ 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 (hours) ■ Inflow ❑ Primary Sement Basin Routing Summaries Durli WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HVdroCADO 10.10-6a s/n 08126 © 2020 HVdroCAD Software Solutions LLC Paoe 58 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by Rational method, Rise/Fall=1.0/1.0 xTc Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1S: DA-SB#1 Runoff Area=9.900 ac 0.00% Impervious Runoff Depth=0.85" Tc=10.0 min C=0.60 Runoff=36.24 cfs 0.699 of Subcatchment 8S: DA S13#3 Runoff Area=16.900 ac 0.00% Impervious Runoff Depth=0.79" Tc=15.0 min C=0.60 Runoff=57.02 cfs 1.113 of Subcatchment 9S: DA SB#2 Runoff Area=8.000 ac 0.00% Impervious Runoff Depth=0.85" Tc=10.0 min C=0.60 Runoff=29.29 cfs 0.564 of Subcatchment 10S: DA SB#4 Runoff Area=5.100 ac 0.00% Impervious Runoff Depth=0.85" Tc=10.0 min C=0.60 Runoff=18.67 cfs 0.360 of Pond 2P: SB#1 Peak Elev=391.35' Storage=70,305 cf Inflow=36.24 cfs 0.699 of Outflow=32.14 cfs 0.699 of Pond 5P: SB#2 Peak EIev=390.38' Storage=36,019 cf Inflow=29.29 cfs 0.564 of Outflow=45.56 cfs 0.745 of Pond 7P: SB#3 Peak EIev=379.52' Storage=111,563 cf Inflow=57.02 cfs 1.113 of Primary=45.32 cfs 1.113 of Secondary=0.00 cfs 0.000 of Outflow=45.32 cfs 1.113 of Pond 9P: SB#4 Peak EIev=368.38' Storage=21,391 cf Inflow=18.67 cfs 0.360 of Outflow=18.21 cfs 0.360 of Total Runoff Area = 39.900 ac Runoff Volume = 2.736 of Average Runoff Depth = 0.82" 100.00% Pervious = 39.900 ac 0.00% Impervious = 0.000 ac Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 59 Summary for Subcatchment 1S: DA-SB#1 Runoff = 36.24 cfs @ 0.17 hrs, Volume= 0.699 af, Depth= 0.85" Routed to Pond 2P : SB#1 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Area (ac) C Description 9.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 1S: DA-SB#1 Hydrograph E- III! ' ����������������■ir�ru�i�iiii■ 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 (hours) 0 Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 60 Summary for Subcatchment 8S: DA S113#3 [48] Hint: Peak<CiA due to short duration Runoff = 57.02 cfs @ 0.23 hrs, Volume= 1.113 af, Depth= 0.79" Routed to Pond 7P : SB#3 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr 16.900 0.60 16.900 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Subcatchment 8S: DA S113#3 Hydrograph I� ■■■■.■.■■■■.YiiiiiiYWi�ii�,�rl� ' Ill Ill ■■■...■■■.■..■■■..���� ' ■■■■■■■■■■■■■■■■■■■■.. U 1 2 J 4 b U / S U lU it iZ 13 14 10 111 11 la lU ZU 21 L Z9 24 Time (horns) ■ Rurwff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 61 Summary for Subcatchment 9S: DA S113#2 Runoff = 29.29 cfs @ 0.17 hrs, Volume= 0.564 af, Depth= 0.85" Routed to Pond 5P : SB#2 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Area (ac) C Description 8.000 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DA S113#2 Hydrograph I/ Rainfall • ■ • �M • . i (i Runoff • ■■■■■■■■emarle ■■■■■■■■ ■■■■■■■■■■ ■■■■■■■■■■■ ■■■■■■■■■■■ ■■■■■■■■■■■ I/ ■■■■■■■■■■■■ MEN ■■ I/ ■■■ ■■M■■■■ ■■■■■■■■■■■■■■■■■■■■ I% 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 (hours) ❑ Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 62 Summary for Subcatchment 10S: DA SB#4 Runoff = 18.67 cfs @ 0.17 hrs, Volume= 0.360 af, Depth= 0.85" Routed to Pond 9P : SB#4 Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Area (ac) C Description 5.100 0.60 5.100 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, E Subcatchment 10S: DA S113#4 Hydrograph Rainfall I 00-1ir ` ` ' ` w"M I� --------Albemarle MM wwwwwwwwww iiiiiiiii�. wwwwwwwwww wwwwwwwwwww wwwwwwwwwww I/ wwwwwwwwwwwwwwwwIR" n"MM 1/ MMMMMMMMMM1MMww I/ wMwwwwwMwwwwwMwwww wwwwwwwwwwwwwwwww wwwwwwwwwwwwwwwwwwwww wwwwwwwwwwwwwwwwwwwww wwwwwwwwwwwwwwwwwwwwww wwwvww wwvwwww 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 (hours) O Runoff Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 63 Summary for Pond 2P: SB#1 Inflow Area = 9.900 ac, 0.00% Impervious, Inflow Depth = 0.85" for 100-yr event Inflow = 36.24 cfs @ 0.17 hrs, Volume= 0.699 of Outflow = 32.14 cfs @ 0.25 hrs, Volume= 0.699 af, Atten= 11%, Lag= 5.0 min Primary = 32.14 cfs @ 0.25 hrs, Volume= 0.699 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.50' Surf.Area= 10,499 sf Storage= 61,033 cf Peak Elev= 391.35' @ 0.25 hrs Surf.Area= 11,373 sf Storage= 70,305 cf (9,272 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 6.2 min ( 18.2 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 380.00' 77,941 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 380.00 1,012 0 0 382.00 2,242 3,254 3,254 384.00 4,890 7,132 10,386 386.00 6,922 11,812 22,198 388.00 8,404 15,326 37,524 390.00 9,984 18,388 55,912 392.00 12,045 22,029 77,941 Device Routing Invert Outlet Devices #1 Primary 380.00' 36.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 380.00' / 366.00' S= 0.1373 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 7.07 sf #2 Device 1 390.50' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 391.50' 16.0' long x 16.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=32.04 cfs @ 0.25 hrs HW=391.35' (Free Discharge) �1=Culvert (Passes 32.04 cfs of 94.24 cfs potential flow) L2=Orifice/Grate (Weir Controls 32.04 cfs @ 3.01 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 64 30 28 26 24 V 22 3 20 LL 18 16 14 12 10 8 6 4 Pond 2P: SB#1 Hydrograph .. ••��. - MM ...........M ...........a ,1 MMMMMMMM.. I/ j/ I� .......... .......... ........... ..............MM. MM.. ...................... I/ M...IMMMMMMM..M....M.. I� ..................... I� ..................... ..................... .................... I� ....................................................................................................................I MMMMMMMMMM MMMMMMM ......M�MMMM ......MNMMMM 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 (hours) ■ Inflow ❑ Primary Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 65 Summary for Pond 5P: S113#2 Inflow Area = 8.000 ac, 0.00% Impervious, Inflow Depth = 0.85" for 100-yr event Inflow = 29.29 cfs @ 0.17 hrs, Volume= 0.564 of Outflow = 45.56 cfs @ 0.00 hrs, Volume= 0.745 af, Atten= 0%, Lag= 0.0 min Primary = 45.56 cfs @ 0.00 hrs, Volume= 0.745 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 390.38' Surf.Area= 6,819 sf Storage= 36,019 cf Peak Elev= 390.38' @ 0.00 hrs Surf.Area= 6,819 sf Storage= 36,019 cf Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 0.6 min ( 12.6 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 384.00' 49,058 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 384.00 2,125 0 0 386.00 4,875 7,000 7,000 388.00 7,710 12,585 19,585 390.00 6,242 13,952 33,537 392.00 9,279 15,521 49,058 Device Routing Invert Outlet Devices #1 Primary 374.00' 24.0" Round Culvert L= 102.0' Box, 00 wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 374.00' / 373.00' S= 0.0098 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 389.30' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=45.56 cfs @ 0.00 hrs HW=390.38' (Free Discharge) L1=Culvert (Barrel Controls 45.56 cfs @ 14.50 fps) t2=Orifice/Grate (Passes 45.56 cfs of 46.12 cfs potential flow) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 66 Pond 5P: SB#2 Hydrograph • i 11 l ' . ' • 1 • • � a soon■■■■ ® ........... 1 ............ ` ............ �p SENSE= ■■■o■■■■■■ ■■■■■■ ■■■■■■■■■■ 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 Tim (hours) ❑ Inflow ❑ Primary Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 © 2020 HydroCAD Software Solutions LLC Page 67 Summary for Pond 7P: SB#3 Inflow Area = 16.900 ac, 0.00% Impervious, Inflow Depth = 0.79" for 100-yr event Inflow = 57.02 cfs @ 0.23 hrs, Volume= 1.113 of Outflow = 45.32 cfs @ 0.28 hrs, Volume= 1.113 af, Atten= 21%, Lag= 3.1 min Primary = 45.32 cfs @ 0.28 hrs, Volume= 1.113 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 378.60' Surf.Area= 15,761 sf Storage= 96,618 cf Peak Elev= 379.52' @ 0.28 hrs Surf.Area= 16,768 sf Storage= 111,563 cf (14,945 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 7.1 min ( 21.1 - 14.0 ) Volume Invert Avail.Storage Storage Description #1 368.00' 156,612 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 368.00 2,576 0 0 372.00 6,346 17,844 17,844 374.00 11,021 17,367 35,211 376.00 13,012 24,033 59,244 378.00 15,103 28,115 87,359 380.00 17,296 32,399 119,758 382.00 19,558 36,854 156,612 Device Routino Invert Outlet Devices #1 Primary 368.00' 42.0" Round Culvert L= 112.7' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 368.00' / 366.00' S= 0.0177 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 9.62 sf #2 Device 1 378.60' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Secondary 379.70' 15.0' long x 12.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.57 2.62 2.70 2.67 2.66 2.67 2.66 2.64 Primary OutFlow Max=45.19 cfs @ 0.28 hrs HW=379.52' (Free Discharge) L1=Culvert (Passes 45.19 cfs of 127.75 cfs potential flow) t2=Orifice/Grate (Weir Controls 45.19 cfs @ 3.13 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=378.60' (Free Discharge) t3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdrOCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 68 Pond 7P: SB#3 Hydrograph ❑ Inflow ❑ Outflow ❑ Primary ❑ Secondary 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 (hours) Sement Basin Routing Summaries Duniora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HydroCAD® 10.10-6a s/n 08126 @ 2020 HydroCAD Software Solutions LLC Page 69 Summary for Pond 9P: SB#4 Inflow Area = 5.100 ac, 0.00% Impervious, Inflow Depth = 0.85" for 100-yr event Inflow = 18.67 cfs @ 0.17 hrs, Volume= 0.360 of Outflow = 18.21 cfs @ 0.24 hrs, Volume= 0.360 af, Atten= 2%, Lag= 4.0 min Primary = 18.21 cfs @ 0.24 hrs, Volume= 0.360 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Starting Elev= 367.80' Surf.Area= 4,734 sf Storage= 18,543 cf Peak Elev= 368.38' @ 0.24 hrs Surf.Area= 5,078 sf Storage= 21,391 cf (2,848 cf above start) Plug -Flow detention time= (not calculated: initial storage exceeds outflow) Center -of -Mass det. time= 3.2 min ( 15.2 - 12.0 ) Volume Invert Avail.Storage Storage Description #1 362.00' 30,413 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 362.00 1,789 0 0 364.00 2,707 4,496 4,496 366.00 3,726 6,433 10,929 368.00 4,846 8,572 19,501 370.00 6,066 10,912 30,413 Device Routing Invert Outlet Devices #1 Primary 362.00' 24.0" Round Culvert L= 48.0' Box, 0° wingwalls, square crown edge, Ke= 0.700 Inlet / Outlet Invert= 362.00' / 361.75' S= 0.0052 '/' Cc= 0.900 n= 0.020, Flow Area= 3.14 sf #2 Device 1 367.80' 48.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads MPrimary OutFlow Max=18.16 cfs @ 0.24 hrs HW=368.38' (Free Discharge) L1=Culvert (Passes 18.16 cfs of 30.73 cfs potential flow) t2=Orifice/Grate (Weir Controls 18.16 cfs @ 2.49 fps) Sement Basin Routing Summaries Dunlora WPO Albemarle Rainfall 100-yr Duration=14 min, Inten=6.05 in/hr Prepared by HP Inc. Printed 12/6/2021 HvdroCAD® 10.10-6a s/n 08126 © 2020 HvdroCAD Software Solutions LLC Paae 70 Pond 9P: SB#4 Hydrograph Peak Elev=368.38' i U."M 0 I/ I l -- MMMMMM-- ----------- MMMM1 M -------------------MM --------------------- �//MMMMM ...-_._ 1 O/ 00. 0 / ___. ___ �m __._ 0 1 2 3 4 5 6 7 8 4 10 11 12 13 14 15 16 17 18 19 20 21 22 28 24 Time (hours) F Inflow ❑ Primary