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HomeMy WebLinkAboutWPO202200038 Calculations 2022-09-14 (19)18LLS 1S S 7) 9S 11S Lot 59 7+00 - too 6+00 - 5�00 5+q0 - 4+004+ot 3+00 3+00 - 2�jf 0 19R 4R —� 6R --{ 8R 10R 20S 2+00 - �+oo 8+08 - 7+00 7+00 - 6+00 6+00 - 4+50 4+50 - 2+75 2+75 - 1+50 1+50 - 0+50 Subcat Reach Aon Llnk Rear Ditch_POA#6 Prepared by HP Inc. Project Notes Defined 10 rainfall events from Albemarle Rainfall OF Copied 10 events from Albemarle Rainfall 24-hr S1 storm Printed 9/7/2022 Rear Ditch_POAN Prepared by HP Inc. Area Listing (all nodes) Area C Description (acres) (subcatchment-numbers) 3.040 0.35 (1S, 5S, 7S, 9S, 11S, 18S, 20S) 3.040 0.35 TOTAL AREA Printed 9/7/2022 Rear Ditch _POAN Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Prepared by HP Inc. Printed 9/7/2022 HVdroCAD® 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paae 4 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: 7+00 - 6+00 Runoff Area=0.390 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.62 cfs 0.006 of Subcatchment 5S: 6+00 - 5+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.76 cfs 0.007 of Subcatchment 7S: 5+00 - 4+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.76 cfs 0.007 of Subcatchment 9S: 4+00 - 3+00 Runoff Area=0.500 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.79 cfs 0.008 of Subcatchment 11S: 3+00 - 2+00 Runoff Area=0.500 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.79 cfs 0.008 of Subcatchment 18S: Lot 59 Runoff Area=0.210 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.33 cfs 0.003 of Subcatchment 20S: 2+00 - 1+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.18" Tc=5.0 min C=0.35 Runoff=0.76 cfs 0.007 of Reach 4R: 7+00 - 6+00 Avg. Flow Depth=0.49' Max Vet=1.23 fps Inflow=0.91 cfs 0.009 of n=0.035 L=100.0' S=0.0060'/' Capacity=5.98 cfs Outflow=0.87 cfs 0.009 of Reach 6R: 6+00 - 4+50 Avg. Flow Depth=0.45' Max Vet=3.86 fps Inflow=2.35 cfs 0.024 of n=0.035 L=150.0' S=0.0654'/' Capacity=19.74 cfs Outflow=2.33 cfs 0.024 of Reach 8R: 4+50 - 2+75 Avg. Flow Depth=0.47' Max Vet=4.67 fps Inflow=3.11 cfs 0.031 of n=0.035 L=175.0' S=0.0906 7 Capacity=23.24 cfs Outflow=3.07 cfs 0.031 of Reach 1 OR: 2+75 - 1+50 Avg. Flow Depth=0.65' Max Vet=3.01 fps Inflow=3.83 cfs 0.039 of n=0.035 L=122.0' S=0.0245'/' Capacity=12.08 cfs Outflow=3.77 cfs 0.039 of Reach 19R: 8+08 - 7+00 Avg. Flow Depth=0.33' Max Vet=0.95 fps Inflow=0.33 cfs 0.003 of n=0.035 L=108.0' S=0.0060'/' Capacity=0.94 cfs Outflow=0.31 cfs 0.003 of Reach 21 R: 1+50 - 0+50 Avg. Flow Depth=0.51' Max Vet=5.74 fps Inflow=4.48 cfs 0.046 of n=0.035 L=100.0' S=0.1228'/' Capacity=27.05 cfs Outflow=4.46 cfs 0.046 of Total Runoff Area = 3.040 ac Runoff Volume = 0.046 of Average Runoff Depth = 0.18" 100.00% Pervious = 3.040 ac 0.00% Impervious = 0.000 ac Rear Ditch_POA#6 Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 1S: 7+00 - 6+00 Runoff = 0.62 cfs @ 0.09 hrs, Volume= 0.006 af, Depth= 0.18" Routed to Reach 4R : 7+00 - 6+00 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=7 min, Inten=4.50 in/hr 0.390 0.35 0.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 0. I 9. I 9. � I 9. 0 LL I 9. I 9. I 0. Subcatchment 1S: 7+00 - 6+00 Hydrograph MESON MEMMEME • . ' . -: . . / �I iIt �I ..........� . ............ ■■■■■■■■■■■ ■■■EM■■ EM..... ::::::MME ......MEMEME.... ':::::::MEMEN �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) ■ Rurwff Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 5S: 6+00 - 5+00 Runoff = 0.76 cfs @ 0.09 hrs, Volume= 0.007 af, Depth= 0.18" Routed to Reach 6R : 6+00 - 4+50 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=7 min, Inten=4.50 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 5S: 6+00 - 5+00 Hydrograph ■ Rurwff Time (hours) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 7S: 5+00 - 4+00 Runoff = 0.76 cfs @ 0.09 hrs, Volume= 0.007 af, Depth= 0.18" Routed to Reach 6R : 6+00 - 4+50 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=7 min, Inten=4.50 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 7S: 5+00 - 4+00 Hydrograph ■ Rurwff Time (hours) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 9S: 4+00 - 3+00 Runoff = 0.79 cfs @ 0.09 hrs, Volume= 0.008 af, Depth= 0.18" Routed to Reach 8R : 4+50 - 2+75 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=7 min, Inten=4.50 in/hr 0.500 0.35 0.500 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 9S: 4+00 - 3+00 Hydrograph ❑ Runoff 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 11S: 3+00 - 2+00 Runoff = 0.79 cfs @ 0.09 hrs, Volume= 0.008 af, Depth= 0.18" Routed to Reach 1 OR : 2+75 - 1+50 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=7 min, Inten=4.50 in/hr 0.500 0.35 0.500 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11S: 3+00 - 2+00 Hydrograph ❑ Runoff 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 18S: Lot 59 Runoff = 0.33 cfs @ 0.09 hrs, Volume= 0.003 af, Depth= 0.18" Routed to Reach 19R : 8+08 - 7+00 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=7 min, Inten=4.50 in/hr 0.210 0.35 0.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 0.36 0. 0. 0.32 0.3 0.28 0.26 0.24 0.22 0.2 c 0.18 LL 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Subcatchment 18S: Lot 59 Hydrograph PF ,, ■■■■■■■■■■ww■��■■■w�wr■■■■ ■■■■■■■■■■■ww■aw�!wwwtr�!ww i ■■■■■■■■■■■��I I i17, i\•/I1711111 i�.1 111111�� ■■■■■■■■■■ww��1�r1�1I��IrM�l4■ i■■■■■■■■■■■■■■■■■row ll ................. w■ ill 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 Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Subcatchment 20S: 2+00 -1+00 Runoff = 0.76 cfs @ 0.09 hrs, Volume= 0.007 af, Depth= 0.18" Routed to Reach 21 R : 1+50 - 0+50 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=7 min, Inten=4.50 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 20S: 2+00 -1+00 Hydrograph ■ Rurwff Time (hours) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Summary for Reach 4R: 7+00 - 6+00 [62] Hint: Exceeded Reach 19R OUTLET depth by 0.16' @ 0.13 hrs Printed 9/7/2022 Inflow Area = 0.600 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 0.91 cfs @ 0.11 hrs, Volume= 0.009 of Outflow = 0.87 cfs @ 0.12 hrs, Volume= 0.009 af, Atten= 5%, Lag= 0.8 min Routed to Reach 6R : 6+00 - 4+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 1.23 fps, Min. Travel Time= 1.4 min Avg. Velocity = 0.29 fps, Avg. Travel Time= 5.8 min Peak Storage= 71 cf @ 0.12 hrs Average Depth at Peak Storage= 0.49' , Surface Width= 2.91' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 5.98 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0'/' Top Width= 6.00' Length= 100.0' Slope= 0.0060'/' Inlet Invert= 375.60', Outlet Invert= 375.00' Rear Ditch_POAN Prepared by HP Inc. I G Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 Whir Printed 9/7/2022 Reach 4R: 7+00 - 6+00 Hydrograph Time (houm) ■ Inflow ■ OUWM Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Summary for Reach 6R: 6+00 - 4+50 [61] Hint: Exceeded Reach 4R outlet invert by 0.10' @ 0.12 hrs Printed 9/7/2022 Inflow Area = 1.560 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 2.35 cfs @ 0.11 hrs, Volume= 0.024 of Outflow = 2.33 cfs @ 0.12 hrs, Volume= 0.024 af, Atten= 1 %, Lag= 0.4 min Routed to Reach 8R : 4+50 - 2+75 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 3.86 fps, Min. Travel Time= 0.6 min Avg. Velocity = 0.97 fps, Avg. Travel Time= 2.6 min Peak Storage= 91 cf @ 0.12 hrs Average Depth at Peak Storage= 0.45' , Surface Width= 2.69' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 19.74 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0 7' Top Width= 6.00' Length= 150.0' Slope= 0.0654 7' Inlet Invert= 374.65', Outlet Invert= 364.84' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Reach 6R: 6+00 - 4+50 Hydrograph Time (hours) Printed 9/7/2022 ■ Inflow ❑ Outflow Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Summary for Reach 8R: 4+50 - 2+75 [62] Hint: Exceeded Reach 6R OUTLET depth by 0.03' @ 0.21 hrs Printed 9/7/2022 Inflow Area = 2.060 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 3.11 cfs @ 0.12 hrs, Volume= 0.031 of Outflow = 3.07 cfs @ 0.12 hrs, Volume= 0.031 af, Atten= 1 %, Lag= 0.4 min Routed to Reach 10R : 2+75 - 1+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 4.67 fps, Min. Travel Time= 0.6 min Avg. Velocity = 1.13 fps, Avg. Travel Time= 2.6 min Peak Storage= 115 cf @ 0.12 hrs Average Depth at Peak Storage= 0.47' , Surface Width= 2.81' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 23.24 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.07 Top Width= 6.00' Length= 175.0' Slope= 0.0906 7' Inlet Invert= 364.84', Outlet Invert= 348.98' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Reach 8R: 4+50 - 2+75 Hydrograph Mimi Inflow a • Flow Depth=;0.47' Ilr , , 0, ... 000��������������������������������������������� t t Time (homm) ❑ Inflow ❑ Outflow Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Summary for Reach 1OR: 2+75 - 1+50 [62] Hint: Exceeded Reach 8R OUTLET depth by 0.18' @ 0.14 hrs Printed 9/7/2022 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 3.83 cfs @ 0.12 hrs, Volume= 0.039 of Outflow = 3.77 cfs @ 0.13 hrs, Volume= 0.039 af, Atten= 2%, Lag= 0.5 min Routed to Reach 21 R : 1+50 - 0+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 3.01 fps, Min. Travel Time= 0.7 min Avg. Velocity = 0.62 fps, Avg. Travel Time= 3.3 min Peak Storage= 153 cf @ 0.13 hrs Average Depth at Peak Storage= 0.65' , Surface Width= 3.88' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 12.08 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.07 Top Width= 6.00' Length= 122.0' Slope= 0.0245 7' Inlet Invert= 348.98', Outlet Invert= 345.99' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Reach 1 OR: 2+75 -1+50 Hydrograph Printed 9/7/2022 /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) ■ Inflow ❑ Outflow Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Printed 9/7/2022 Summary for Reach 19R: 8+08 - 7+00 Inflow Area = 0.210 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 0.33 cfs @ 0.09 hrs, Volume= 0.003 of Outflow = 0.31 cfs @ 0.12 hrs, Volume= 0.003 af, Atten= 8%, Lag= 2.0 min Routed to Reach 4R : 7+00 - 6+00 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 0.95 fps, Min. Travel Time= 1.9 min Avg. Velocity = 0.26 fps, Avg. Travel Time= 7.0 min Peak Storage= 35 cf @ 0.12 hrs Average Depth at Peak Storage= 0.33' , Surface Width= 1.97' Bank -Full Depth= 0.50' Flow Area= 0.8 sf, Capacity= 0.94 cfs 0.00' x 0.50' deep channel, n= 0.035 Side Slope Z-value= 4.0 2.0'/' Top Width= 3.00' Length= 108.0' Slope= 0.0060'/' Inlet Invert= 376.25', Outlet Invert= 375.60' Reach 19R: 8+08 - 7+00 Hydrograph ❑ Inflow ❑ Outflow 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Summary for Reach 21 R: 1+50 - 0+50 [62] Hint: Exceeded Reach 1 OR OUTLET depth by 0.01' @ 0.00 hrs Printed 9/7/2022 Inflow Area = 3.040 ac, 0.00% Impervious, Inflow Depth = 0.18" for 2-yr event Inflow = 4.48 cfs @ 0.12 hrs, Volume= 0.046 of Outflow = 4.46 cfs @ 0.12 hrs, Volume= 0.046 af, Atten= 0%, Lag= 0.2 min Routed to nonexistent node 18R Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 5.74 fps, Min. Travel Time= 0.3 min Avg. Velocity = 1.32 fps, Avg. Travel Time= 1.3 min Peak Storage= 78 cf @ 0.12 hrs Average Depth at Peak Storage= 0.51' , Surface Width= 3.05' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 27.05 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0 7' Top Width= 6.00' Length= 100.0' Slope= 0.1228 7' Inlet Invert= 346.00', Outlet Invert= 333.72' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 2-yr Duration=7 min, Inten=4.50 in/hr Reach 21 R: 1+50 - 0+50 Hydrograph Time (hours) Printed 9/7/2022 ■ Inflow ■ Outflow Rear Ditch _POAN Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Prepared by HP Inc. Printed 9/7/2022 HVdroCAD® 10.10-7c s/n 08126 © 2022 HVdroCAD Software Solutions LLC Paoe 23 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: 7+00 - 6+00 Runoff Area=0.390 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=0.82 cfs 0.008 of Subcatchment 5S: 6+00 - 5+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=1.01 cfs 0.010 of Subcatchment 7S: 5+00 - 4+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=1.01 cfs 0.010 of Subcatchment 9S: 4+00 - 3+00 Runoff Area=0.500 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=1.05 cfs 0.010 of Subcatchment 11S: 3+00 - 2+00 Runoff Area=0.500 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=1.05 cfs 0.010 of Subcatchment 18S: Lot 59 Runoff Area=0.210 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=0.44 cfs 0.004 of Subcatchment 20S: 2+00 - 1+00 Runoff Area=0.480 ac 0.00% Impervious Runoff Depth=0.24" Tc=5.0 min C=0.35 Runoff=1.01 cfs 0.010 of Reach 4R: 7+00 - 6+00 Avg. Flow Depth=0.54' Max Vet=1.32 fps Inflow=1.22 cfs 0.012 of n=0.035 L=100.0' S=0.0060'/' Capacity=5.98 cfs Outflow=1.16 cfs 0.012 of Reach 6R: 6+00 - 4+50 Avg. Flow Depth=0.50' Max Vet=4.14 fps Inflow=3.13 cfs 0.031 of n=0.035 L=150.0' S=0.0654'/' Capacity=19.74 cfs Outflow=3.11 cfs 0.031 of Reach 8R: 4+50 - 2+75 Avg. Flow Depth=0.52' Max Vet=5.02 fps Inflow=4.13 cfs 0.042 of n=0.035 L=175.0' S=0.0906 7 Capacity=23.24 cfs Outflow=4.09 cfs 0.042 of Reach 1 OR: 2+75 - 1+50 Avg. Flow Depth=0.72' Max Vet=3.23 fps Inflow=5.11 cfs 0.052 of n=0.035 L=122.0' S=0.0245'/' Capacity=12.08 cfs Outflow=5.04 cfs 0.052 of Reach 19R: 8+08 - 7+00 Avg. Flow Depth=0.37' Max Vet=1.02 fps Inflow=0.44 cfs 0.004 of n=0.035 L=108.0' S=0.0060'/' Capacity=0.94 cfs Outflow=0.41 cfs 0.004 of Reach 21 R: 1+50 - 0+50 Avg. Flow Depth=0.57' Max Vet=6.18 fps Inflow=5.99 cfs 0.061 of n=0.035 L=100.0' S=0.1228'/' Capacity=27.05 cfs Outflow=5.97 cfs 0.061 of Total Runoff Area = 3.040 ac Runoff Volume = 0.061 of Average Runoff Depth = 0.24" 100.00% Pervious = 3.040 ac 0.00% Impervious = 0.000 ac Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Summary for Subcatchment 1S: 7+00 - 6+00 Runoff = 0.82 cfs @ 0.09 hrs, Volume= 0.008 af, Depth= 0.24" Routed to Reach 4R : 7+00 - 6+00 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=7 min, Inten=5.94 in/hr 0.390 0.35 0.390 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 1S: 7+00 - 6+00 Hydrograph ■ Rurwff Time (hours) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Subcatchment 5S: 6+00 - 5+00 Runoff = 1.01 cfs @ 0.09 hrs, Volume= 0.010 af, Depth= 0.24" Routed to Reach 6R : 6+00 - 4+50 Printed 9/7/2022 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=7 min, Inten=5.94 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 5S: 6+00 - 5+00 Hydrograph i of cs le arte Ran 111-r uato= i, IMen =5...9 i/r Runoff Area=0.480 ac unoff V lume=0.01 of n ff D�p1 h�0. 4�' Tc=5.0 min C=0.35 Time (houm) ■ Runoff Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Subcatchment 7S: 5+00 - 4+00 Runoff = 1.01 cfs @ 0.09 hrs, Volume= 0.010 af, Depth= 0.24" Routed to Reach 6R : 6+00 - 4+50 Printed 9/7/2022 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=7 min, Inten=5.94 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 7S: 5+00 - 4+00 Hydrograph i of cs le arte Ran 111-r uato= i, IMen =5...9 i/r Runoff Area=0.480 ac unoff V lume=0.01 of n ff D�p1 h�0. 4�' Tc=5.0 min C=0.35 Time (houm) ■ Runoff Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Summary for Subcatchment 9S: 4+00 - 3+00 Runoff = 1.05 cfs @ 0.09 hrs, Volume= 0.010 af, Depth= 0.24" Routed to Reach 8R : 4+50 - 2+75 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=7 min, Inten=5.94 in/hr 0.500 0.35 0.500 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, f Subcatchment 9S: 4+00 - 3+00 Hydrograph Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Runoff Area=0.500 ac �unoff.JV lume=0.010 of noffel dpth0.�4�. Tc=5.0 min 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) ❑ RunoH Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Summary for Subcatchment 11S: 3+00 - 2+00 Runoff = 1.05 cfs @ 0.09 hrs, Volume= 0.010 af, Depth= 0.24" Routed to Reach 1 OR : 2+75 - 1+50 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=7 min, Inten=5.94 in/hr 0.500 0.35 0.500 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, f Subcatchment 11S: 3+00 - 2+00 Hydrograph Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Runoff Area=0.500 ac �unoff.JV lume=0.010 of noffel dpth0.�4�. Tc=5.0 min 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) ❑ RunoH Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Summary for Subcatchment 18S: Lot 59 Runoff = 0.44 cfs @ 0.09 hrs, Volume= 0.004 af, Depth= 0.24" Routed to Reach 19R : 8+08 - 7+00 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=7 min, Inten=5.94 in/hr 0.210 0.35 0.210 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 0 0 0 0 Subcatchment 18S: Lot 59 Hydrograph ® 1004 110F MM���� 1 - • ,ll • ,----------- . 1 1MMMMMM • • - 111Runoff Depth=0.24" 1MMMMMMMMMMMMM MMI♦MwM����� MMI♦�WI♦������ M MME MMMMMMMM %///------------------------------ ---------------------------------------------------- 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 Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Subcatchment 20S: 2+00 -1+00 Runoff = 1.01 cfs @ 0.09 hrs, Volume= 0.010 af, Depth= 0.24" Routed to Reach 21 R : 1+50 - 0+50 Printed 9/7/2022 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=7 min, Inten=5.94 in/hr 0.480 0.35 0.480 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 20S: 2+00 -1+00 Hydrograph of cs le rl an 111-r uato= i, Itn=5...9 i/r Runoff Area=0.480 ac unoff V lume=0.01 of n ff D�pth�0. 4�' Tc=5.0 min ------------------------- C=0.35 Time (homm) ■ Runoff Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Reach 4R: 7+00 - 6+00 [62] Hint: Exceeded Reach 19R OUTLET depth by 0.18' @ 0.13 hrs Printed 9/7/2022 Inflow Area = 0.600 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 1.22 cfs @ 0.11 hrs, Volume= 0.012 of Outflow = 1.16 cfs @ 0.12 hrs, Volume= 0.012 af, Atten= 4%, Lag= 0.8 min Routed to Reach 6R : 6+00 - 4+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 1.32 fps, Min. Travel Time= 1.3 min Avg. Velocity = 0.30 fps, Avg. Travel Time= 5.6 min Peak Storage= 88 cf @ 0.12 hrs Average Depth at Peak Storage= 0.54' , Surface Width= 3.25' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 5.98 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0'/' Top Width= 6.00' Length= 100.0' Slope= 0.0060'/' Inlet Invert= 375.60', Outlet Invert= 375.00' Rear Ditch_POAN Prepared by HP Inc. C r Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 Whir Printed 9/7/2022 Reach 4R: 7+00 - 6+00 Hydrograph 1 IUO 1 II 1 I� Time (houm) ■ Inflow ■ Outflow Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Reach 6R: 6+00 - 4+50 [61] Hint: Exceeded Reach 4R outlet invert by 0.15' @ 0.12 hrs Printed 9/7/2022 Inflow Area = 1.560 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 3.13 cfs @ 0.11 hrs, Volume= 0.031 of Outflow = 3.11 cfs @ 0.12 hrs, Volume= 0.031 af, Atten= 1 %, Lag= 0.4 min Routed to Reach 8R : 4+50 - 2+75 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 4.14 fps, Min. Travel Time= 0.6 min Avg. Velocity = 1.01 fps, Avg. Travel Time= 2.5 min Peak Storage= 112 cf @ 0.12 hrs Average Depth at Peak Storage= 0.50' , Surface Width= 3.00' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 19.74 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0 7' Top Width= 6.00' Length= 150.0' Slope= 0.0654 7' Inlet Invert= 374.65', Outlet Invert= 364.84' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 Whir Reach 6R: 6+00 - 4+50 Hydrograph Time (hours) Printed 9/7/2022 ■ Inflow ■ Outflow Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Reach 8R: 4+50 - 2+75 [62] Hint: Exceeded Reach 6R OUTLET depth by 0.03' @ 0.20 hrs Printed 9/7/2022 Inflow Area = 2.060 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 4.13 cfs @ 0.11 hrs, Volume= 0.042 of Outflow = 4.09 cfs @ 0.12 hrs, Volume= 0.042 af, Atten= 1 %, Lag= 0.3 min Routed to Reach 1 OR : 2+75 - 1+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 5.02 fps, Min. Travel Time= 0.6 min Avg. Velocity = 1.17 fps, Avg. Travel Time= 2.5 min Peak Storage= 143 cf @ 0.12 hrs Average Depth at Peak Storage= 0.52' , Surface Width= 3.13' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 23.24 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.07 Top Width= 6.00' Length= 175.0' Slope= 0.0906 7' Inlet Invert= 364.84', Outlet Invert= 348.98' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Reach 8R: 4+50 - 2+75 Hydrograph ❑ Inflow ❑ Outflow 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Reach 1OR: 2+75 - 1+50 [62] Hint: Exceeded Reach 8R OUTLET depth by 0.20' @ 0.13 hrs Printed 9/7/2022 Inflow Area = 2.560 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 5.11 cfs @ 0.12 hrs, Volume= 0.052 of Outflow = 5.04 cfs @ 0.12 hrs, Volume= 0.052 af, Atten= 1 %, Lag= 0.4 min Routed to Reach 21 R : 1+50 - 0+50 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 3.23 fps, Min. Travel Time= 0.6 min Avg. Velocity = 0.64 fps, Avg. Travel Time= 3.2 min Peak Storage= 190 cf @ 0.12 hrs Average Depth at Peak Storage= 0.72' , Surface Width= 4.32' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 12.08 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.07 Top Width= 6.00' Length= 122.0' Slope= 0.0245 7' Inlet Invert= 348.98', Outlet Invert= 345.99' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Reach 1OR: 2+75 - 1+50 Hydrograph ■ Inflow ■ ou to 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Summary for Reach 19R: 8+08 - 7+00 Inflow Area = 0.210 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 0.44 cfs @ 0.09 hrs, Volume= 0.004 of Outflow = 0.41 cfs @ 0.12 hrs, Volume= 0.004 af, Atten= 7%, Lag= 1.9 min Routed to Reach 4R : 7+00 - 6+00 Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 1.02 fps, Min. Travel Time= 1.8 min Avg. Velocity = 0.27 fps, Avg. Travel Time= 6.7 min Peak Storage= 43 cf @ 0.12 hrs Average Depth at Peak Storage= 0.37' , Surface Width= 2.20' Bank -Full Depth= 0.50' Flow Area= 0.8 sf, Capacity= 0.94 cfs 0.00' x 0.50' deep channel, n= 0.035 Side Slope Z-value= 4.0 2.0'/' Top Width= 3.00' Length= 108.0' Slope= 0.0060'/' Inlet Invert= 376.25', Outlet Invert= 375.60' Reach 19R: 8+08 - 7+00 Hydrograph ■ Inflow ❑ Outflow 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) Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Summary for Reach 21 R: 1+50 - 0+50 [62] Hint: Exceeded Reach 1 OR OUTLET depth by 0.01' @ 0.00 hrs Printed 9/7/2022 Inflow Area = 3.040 ac, 0.00% Impervious, Inflow Depth = 0.24" for 10-yr event Inflow = 5.99 cfs @ 0.12 hrs, Volume= 0.061 of Outflow = 5.97 cfs @ 0.12 hrs, Volume= 0.061 af, Atten= 0%, Lag= 0.2 min Routed to nonexistent node 18R Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Max. Velocity= 6.18 fps, Min. Travel Time= 0.3 min Avg. Velocity = 1.37 fps, Avg. Travel Time= 1.2 min Peak Storage= 97 cf @ 0.12 hrs Average Depth at Peak Storage= 0.57' , Surface Width= 3.40' Bank -Full Depth= 1.00' Flow Area= 3.0 sf, Capacity= 27.05 cfs 0.00' x 1.00' deep channel, n= 0.035 Side Slope Z-value= 2.0 4.0 7' Top Width= 6.00' Length= 100.0' Slope= 0.1228 7' Inlet Invert= 346.00', Outlet Invert= 333.72' Rear Ditch_POAN Prepared by HP Inc. Albemarle Rainfall 10-yr Duration=7 min, Inten=5.94 in/hr Printed 9/7/2022 Reach 21 R: 1+50 - 0+50 Hydrograph �i 11111111111■��i������1� • '�� ��� II 0� 1111111111111 ' ' ' ' 1111111111 11 1111 ........... � 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 ❑ Outflow