Loading...
Proposed HydroCAD ReportPR1 PR1 (TO WETLAND/CREEK) PR2 PR2 (TO ADJ. PROPERTY) PR3 PR3 (TO 78TH ST) PR4 PR4 (TO INFILTRATION BASIN 1P) 2R CREEK 1P FILTRATION BASIN 1 Routing Diagram for 17227 PROPOSED Prepared by {enter your company name here}, Printed 12/19/2019 HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Subcat Reach Pond Link 17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 2HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 2.315 61 >75% Grass cover, Good, HSG B (PR1, PR2, PR3, PR4) 1.249 98 Paved parking, HSG B (PR3, PR4) 3.564 74 TOTAL AREA 17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 3HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 3.564 HSG B PR1, PR2, PR3, PR4 0.000 HSG C 0.000 HSG D 0.000 Other 3.564 TOTAL AREA 17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 4HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 2.315 0.000 0.000 0.000 2.315 >75% Grass cover, Good PR1, PR2, PR3, PR4 0.000 1.249 0.000 0.000 0.000 1.249 Paved parking PR3, PR4 0.000 3.564 0.000 0.000 0.000 3.564 TOTAL AREA 17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 5HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 1P 950.50 948.70 90.0 0.0200 0.013 15.0 0.0 0.0 MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 6HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=66,969 sf 0.00% Impervious Runoff Depth=0.31"Subcatchment PR1: PR1 (TO Tc=0.0 min CN=61 Runoff=0.95 cfs 0.039 af Runoff Area=7,308 sf 0.00% Impervious Runoff Depth=0.31"Subcatchment PR2: PR2 (TO ADJ. Tc=0.0 min CN=61 Runoff=0.10 cfs 0.004 af Runoff Area=4,282 sf 29.26% Impervious Runoff Depth=0.71"Subcatchment PR3: PR3 (TO 78TH ST) Tc=0.0 min CN=72 Runoff=0.17 cfs 0.006 af Runoff Area=76,692 sf 69.29% Impervious Runoff Depth=1.60"Subcatchment PR4: PR4 (TO Tc=0.0 min CN=87 Runoff=6.14 cfs 0.235 af Inflow=1.40 cfs 0.284 afReach 2R: CREEK Outflow=1.40 cfs 0.284 af Peak Elev=953.46' Storage=6,105 cf Inflow=6.14 cfs 0.235 afPond 1P: FILTRATION BASIN 1 Primary=0.21 cfs 0.235 af Secondary=0.00 cfs 0.000 af Outflow=0.21 cfs 0.235 af Total Runoff Area = 3.564 ac Runoff Volume = 0.284 af Average Runoff Depth = 0.96" 64.96% Pervious = 2.315 ac 35.04% Impervious = 1.249 ac MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 7HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PR1 (TO WETLAND/CREEK) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.95 cfs @ 12.09 hrs, Volume= 0.039 af, Depth= 0.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (sf) CN Description 66,969 61 >75% Grass cover, Good, HSG B 66,969 100.00% Pervious Area Subcatchment PR1: PR1 (TO WETLAND/CREEK) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 2-Year Rainfall=2.84" Runoff Area=66,969 sf Runoff Volume=0.039 af Runoff Depth=0.31" Tc=0.0 min CN=61 0.95 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 8HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PR2 (TO ADJ. PROPERTY) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.10 cfs @ 12.09 hrs, Volume= 0.004 af, Depth= 0.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (sf) CN Description 7,308 61 >75% Grass cover, Good, HSG B 7,308 100.00% Pervious Area Subcatchment PR2: PR2 (TO ADJ. PROPERTY) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 MSE 24-hr 3 2-Year Rainfall=2.84" Runoff Area=7,308 sf Runoff Volume=0.004 af Runoff Depth=0.31" Tc=0.0 min CN=61 0.10 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 9HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR3: PR3 (TO 78TH ST) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.17 cfs @ 12.09 hrs, Volume= 0.006 af, Depth= 0.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (sf) CN Description 1,253 98 Paved parking, HSG B 3,029 61 >75% Grass cover, Good, HSG B 4,282 72 Weighted Average 3,029 70.74% Pervious Area 1,253 29.26% Impervious Area Subcatchment PR3: PR3 (TO 78TH ST) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MSE 24-hr 3 2-Year Rainfall=2.84" Runoff Area=4,282 sf Runoff Volume=0.006 af Runoff Depth=0.71" Tc=0.0 min CN=72 0.17 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 10HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 6.14 cfs @ 12.09 hrs, Volume= 0.235 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (sf) CN Description 53,142 98 Paved parking, HSG B 23,550 61 >75% Grass cover, Good, HSG B 76,692 87 Weighted Average 23,550 30.71% Pervious Area 53,142 69.29% Impervious Area Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 2-Year Rainfall=2.84" Runoff Area=76,692 sf Runoff Volume=0.235 af Runoff Depth=1.60" Tc=0.0 min CN=87 6.14 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 11HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Reach 2R: CREEK [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.564 ac, 35.04% Impervious, Inflow Depth = 0.96" for 2-Year event Inflow = 1.40 cfs @ 12.09 hrs, Volume= 0.284 af Outflow = 1.40 cfs @ 12.09 hrs, Volume= 0.284 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach 2R: CREEK Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=3.564 ac 1.40 cfs 1.40 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 12HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 1.761 ac, 69.29% Impervious, Inflow Depth = 1.60" for 2-Year event Inflow = 6.14 cfs @ 12.09 hrs, Volume= 0.235 af Outflow = 0.21 cfs @ 13.50 hrs, Volume= 0.235 af, Atten= 97%, Lag= 84.5 min Primary = 0.21 cfs @ 13.50 hrs, Volume= 0.235 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 953.46' @ 13.50 hrs Surf.Area= 4,933 sf Storage= 6,105 cf Plug-Flow detention time= 311.1 min calculated for 0.235 af (100% of inflow) Center-of-Mass det. time= 311.1 min ( 1,106.6 - 795.5 ) Volume Invert Avail.Storage Storage Description #1 952.00' 22,188 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 952.00 3,468 0 0 953.00 4,455 3,962 3,962 954.00 5,502 4,979 8,940 955.00 6,609 6,056 14,996 956.00 7,775 7,192 22,188 Device Routing Invert Outlet Devices #1 Device 2 952.00'1.800 in/hr Exfiltration over Surface area #2 Device 4 950.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 4 955.50'12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 950.50'15.0" Round Culvert L= 90.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 950.50' / 948.70' S= 0.0200 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf #5 Secondary 955.80'10.0' long x 3.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32 Primary OutFlow Max=0.21 cfs @ 13.50 hrs HW=953.46' (Free Discharge) 4=Culvert (Passes 0.21 cfs of 9.02 cfs potential flow) 2=Orifice/Grate (Passes 0.21 cfs of 1.56 cfs potential flow) 1=Exfiltration (Exfiltration Controls 0.21 cfs) 3=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=952.00' (Free Discharge) 5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 13HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Pond 1P: FILTRATION BASIN 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Inflow Area=1.761 ac Peak Elev=953.46' Storage=6,105 cf 6.14 cfs 0.21 cfs 0.21 cfs 0.00 cfs MSE 24-hr 3 2-Year Rainfall=2.84"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 14HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 952.00 3,468 0 952.05 3,517 175 952.10 3,567 352 952.15 3,616 531 952.20 3,665 713 952.25 3,715 898 952.30 3,764 1,085 952.35 3,813 1,274 952.40 3,863 1,466 952.45 3,912 1,661 952.50 3,962 1,857 952.55 4,011 2,057 952.60 4,060 2,258 952.65 4,110 2,463 952.70 4,159 2,669 952.75 4,208 2,879 952.80 4,258 3,090 952.85 4,307 3,304 952.90 4,356 3,521 952.95 4,406 3,740 953.00 4,455 3,962 953.05 4,507 4,186 953.10 4,560 4,412 953.15 4,612 4,642 953.20 4,664 4,873 953.25 4,717 5,108 953.30 4,769 5,345 953.35 4,821 5,585 953.40 4,874 5,827 953.45 4,926 6,072 953.50 4,979 6,320 953.55 5,031 6,570 953.60 5,083 6,823 953.65 5,136 7,078 953.70 5,188 7,337 953.75 5,240 7,597 953.80 5,293 7,861 953.85 5,345 8,126 953.90 5,397 8,395 953.95 5,450 8,666 954.00 5,502 8,940 954.05 5,557 9,216 954.10 5,613 9,496 954.15 5,668 9,778 954.20 5,723 10,063 954.25 5,779 10,350 954.30 5,834 10,640 954.35 5,889 10,934 954.40 5,945 11,229 954.45 6,000 11,528 954.50 6,056 11,829 954.55 6,111 12,134 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 954.60 6,166 12,440 954.65 6,222 12,750 954.70 6,277 13,063 954.75 6,332 13,378 954.80 6,388 13,696 954.85 6,443 14,017 954.90 6,498 14,340 954.95 6,554 14,666 955.00 6,609 14,996 955.05 6,667 15,327 955.10 6,726 15,662 955.15 6,784 16,000 955.20 6,842 16,341 955.25 6,901 16,684 955.30 6,959 17,031 955.35 7,017 17,380 955.40 7,075 17,732 955.45 7,134 18,088 955.50 7,192 18,446 955.55 7,250 18,807 955.60 7,309 19,171 955.65 7,367 19,538 955.70 7,425 19,907 955.75 7,484 20,280 955.80 7,542 20,656 955.85 7,600 21,034 955.90 7,658 21,416 955.95 7,717 21,800 956.00 7,775 22,188 MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 15HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=66,969 sf 0.00% Impervious Runoff Depth=0.92"Subcatchment PR1: PR1 (TO Tc=0.0 min CN=61 Runoff=3.39 cfs 0.117 af Runoff Area=7,308 sf 0.00% Impervious Runoff Depth=0.92"Subcatchment PR2: PR2 (TO ADJ. Tc=0.0 min CN=61 Runoff=0.37 cfs 0.013 af Runoff Area=4,282 sf 29.26% Impervious Runoff Depth=1.60"Subcatchment PR3: PR3 (TO 78TH ST) Tc=0.0 min CN=72 Runoff=0.38 cfs 0.013 af Runoff Area=76,692 sf 69.29% Impervious Runoff Depth=2.82"Subcatchment PR4: PR4 (TO Tc=0.0 min CN=87 Runoff=10.34 cfs 0.414 af Inflow=4.35 cfs 0.557 afReach 2R: CREEK Outflow=4.35 cfs 0.557 af Peak Elev=954.49' Storage=11,743 cf Inflow=10.34 cfs 0.414 afPond 1P: FILTRATION BASIN 1 Primary=0.25 cfs 0.414 af Secondary=0.00 cfs 0.000 af Outflow=0.25 cfs 0.414 af Total Runoff Area = 3.564 ac Runoff Volume = 0.557 af Average Runoff Depth = 1.88" 64.96% Pervious = 2.315 ac 35.04% Impervious = 1.249 ac MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 16HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PR1 (TO WETLAND/CREEK) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 3.39 cfs @ 12.09 hrs, Volume= 0.117 af, Depth= 0.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.20" Area (sf) CN Description 66,969 61 >75% Grass cover, Good, HSG B 66,969 100.00% Pervious Area Subcatchment PR1: PR1 (TO WETLAND/CREEK) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.20" Runoff Area=66,969 sf Runoff Volume=0.117 af Runoff Depth=0.92" Tc=0.0 min CN=61 3.39 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 17HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PR2 (TO ADJ. PROPERTY) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.37 cfs @ 12.09 hrs, Volume= 0.013 af, Depth= 0.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.20" Area (sf) CN Description 7,308 61 >75% Grass cover, Good, HSG B 7,308 100.00% Pervious Area Subcatchment PR2: PR2 (TO ADJ. PROPERTY) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 10-Year Rainfall=4.20" Runoff Area=7,308 sf Runoff Volume=0.013 af Runoff Depth=0.92" Tc=0.0 min CN=61 0.37 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 18HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR3: PR3 (TO 78TH ST) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.38 cfs @ 12.09 hrs, Volume= 0.013 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.20" Area (sf) CN Description 1,253 98 Paved parking, HSG B 3,029 61 >75% Grass cover, Good, HSG B 4,282 72 Weighted Average 3,029 70.74% Pervious Area 1,253 29.26% Impervious Area Subcatchment PR3: PR3 (TO 78TH ST) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 10-Year Rainfall=4.20" Runoff Area=4,282 sf Runoff Volume=0.013 af Runoff Depth=1.60" Tc=0.0 min CN=72 0.38 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 19HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 10.34 cfs @ 12.09 hrs, Volume= 0.414 af, Depth= 2.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.20" Area (sf) CN Description 53,142 98 Paved parking, HSG B 23,550 61 >75% Grass cover, Good, HSG B 76,692 87 Weighted Average 23,550 30.71% Pervious Area 53,142 69.29% Impervious Area Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 10-Year Rainfall=4.20" Runoff Area=76,692 sf Runoff Volume=0.414 af Runoff Depth=2.82" Tc=0.0 min CN=87 10.34 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 20HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Reach 2R: CREEK [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.564 ac, 35.04% Impervious, Inflow Depth = 1.88" for 10-Year event Inflow = 4.35 cfs @ 12.09 hrs, Volume= 0.557 af Outflow = 4.35 cfs @ 12.09 hrs, Volume= 0.557 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach 2R: CREEK Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=3.564 ac 4.35 cfs 4.35 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 21HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 1.761 ac, 69.29% Impervious, Inflow Depth = 2.82" for 10-Year event Inflow = 10.34 cfs @ 12.09 hrs, Volume= 0.414 af Outflow = 0.25 cfs @ 13.89 hrs, Volume= 0.414 af, Atten= 98%, Lag= 107.8 min Primary = 0.25 cfs @ 13.89 hrs, Volume= 0.414 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 954.49' @ 13.89 hrs Surf.Area= 6,040 sf Storage= 11,743 cf Plug-Flow detention time= 504.8 min calculated for 0.414 af (100% of inflow) Center-of-Mass det. time= 504.8 min ( 1,289.0 - 784.2 ) Volume Invert Avail.Storage Storage Description #1 952.00' 22,188 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 952.00 3,468 0 0 953.00 4,455 3,962 3,962 954.00 5,502 4,979 8,940 955.00 6,609 6,056 14,996 956.00 7,775 7,192 22,188 Device Routing Invert Outlet Devices #1 Device 2 952.00'1.800 in/hr Exfiltration over Surface area #2 Device 4 950.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 4 955.50'12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 950.50'15.0" Round Culvert L= 90.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 950.50' / 948.70' S= 0.0200 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf #5 Secondary 955.80'10.0' long x 3.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32 Primary OutFlow Max=0.25 cfs @ 13.89 hrs HW=954.49' (Free Discharge) 4=Culvert (Passes 0.25 cfs of 10.83 cfs potential flow) 2=Orifice/Grate (Passes 0.25 cfs of 1.83 cfs potential flow) 1=Exfiltration (Exfiltration Controls 0.25 cfs) 3=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=952.00' (Free Discharge) 5=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 22HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Pond 1P: FILTRATION BASIN 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.761 ac Peak Elev=954.49' Storage=11,743 cf 10.34 cfs 0.25 cfs 0.25 cfs 0.00 cfs MSE 24-hr 3 10-Year Rainfall=4.20"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 23HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 952.00 3,468 0 952.05 3,517 175 952.10 3,567 352 952.15 3,616 531 952.20 3,665 713 952.25 3,715 898 952.30 3,764 1,085 952.35 3,813 1,274 952.40 3,863 1,466 952.45 3,912 1,661 952.50 3,962 1,857 952.55 4,011 2,057 952.60 4,060 2,258 952.65 4,110 2,463 952.70 4,159 2,669 952.75 4,208 2,879 952.80 4,258 3,090 952.85 4,307 3,304 952.90 4,356 3,521 952.95 4,406 3,740 953.00 4,455 3,962 953.05 4,507 4,186 953.10 4,560 4,412 953.15 4,612 4,642 953.20 4,664 4,873 953.25 4,717 5,108 953.30 4,769 5,345 953.35 4,821 5,585 953.40 4,874 5,827 953.45 4,926 6,072 953.50 4,979 6,320 953.55 5,031 6,570 953.60 5,083 6,823 953.65 5,136 7,078 953.70 5,188 7,337 953.75 5,240 7,597 953.80 5,293 7,861 953.85 5,345 8,126 953.90 5,397 8,395 953.95 5,450 8,666 954.00 5,502 8,940 954.05 5,557 9,216 954.10 5,613 9,496 954.15 5,668 9,778 954.20 5,723 10,063 954.25 5,779 10,350 954.30 5,834 10,640 954.35 5,889 10,934 954.40 5,945 11,229 954.45 6,000 11,528 954.50 6,056 11,829 954.55 6,111 12,134 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 954.60 6,166 12,440 954.65 6,222 12,750 954.70 6,277 13,063 954.75 6,332 13,378 954.80 6,388 13,696 954.85 6,443 14,017 954.90 6,498 14,340 954.95 6,554 14,666 955.00 6,609 14,996 955.05 6,667 15,327 955.10 6,726 15,662 955.15 6,784 16,000 955.20 6,842 16,341 955.25 6,901 16,684 955.30 6,959 17,031 955.35 7,017 17,380 955.40 7,075 17,732 955.45 7,134 18,088 955.50 7,192 18,446 955.55 7,250 18,807 955.60 7,309 19,171 955.65 7,367 19,538 955.70 7,425 19,907 955.75 7,484 20,280 955.80 7,542 20,656 955.85 7,600 21,034 955.90 7,658 21,416 955.95 7,717 21,800 956.00 7,775 22,188 MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 24HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=66,969 sf 0.00% Impervious Runoff Depth=2.83"Subcatchment PR1: PR1 (TO Tc=0.0 min CN=61 Runoff=10.39 cfs 0.363 af Runoff Area=7,308 sf 0.00% Impervious Runoff Depth=2.83"Subcatchment PR2: PR2 (TO ADJ. Tc=0.0 min CN=61 Runoff=1.13 cfs 0.040 af Runoff Area=4,282 sf 29.26% Impervious Runoff Depth=3.98"Subcatchment PR3: PR3 (TO 78TH ST) Tc=0.0 min CN=72 Runoff=0.86 cfs 0.033 af Runoff Area=76,692 sf 69.29% Impervious Runoff Depth=5.65"Subcatchment PR4: PR4 (TO Tc=0.0 min CN=87 Runoff=19.48 cfs 0.829 af Inflow=12.70 cfs 1.265 afReach 2R: CREEK Outflow=12.70 cfs 1.265 af Peak Elev=955.81' Storage=20,764 cf Inflow=19.48 cfs 0.829 afPond 1P: FILTRATION BASIN 1 Primary=2.13 cfs 0.829 af Secondary=0.07 cfs 0.001 af Outflow=2.20 cfs 0.829 af Total Runoff Area = 3.564 ac Runoff Volume = 1.265 af Average Runoff Depth = 4.26" 64.96% Pervious = 2.315 ac 35.04% Impervious = 1.249 ac MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 25HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PR1 (TO WETLAND/CREEK) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 10.39 cfs @ 12.09 hrs, Volume= 0.363 af, Depth= 2.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.18" Area (sf) CN Description 66,969 61 >75% Grass cover, Good, HSG B 66,969 100.00% Pervious Area Subcatchment PR1: PR1 (TO WETLAND/CREEK) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.18" Runoff Area=66,969 sf Runoff Volume=0.363 af Runoff Depth=2.83" Tc=0.0 min CN=61 10.39 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 26HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PR2 (TO ADJ. PROPERTY) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 1.13 cfs @ 12.09 hrs, Volume= 0.040 af, Depth= 2.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.18" Area (sf) CN Description 7,308 61 >75% Grass cover, Good, HSG B 7,308 100.00% Pervious Area Subcatchment PR2: PR2 (TO ADJ. PROPERTY) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 100-Year Rainfall=7.18" Runoff Area=7,308 sf Runoff Volume=0.040 af Runoff Depth=2.83" Tc=0.0 min CN=61 1.13 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 27HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR3: PR3 (TO 78TH ST) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 0.86 cfs @ 12.09 hrs, Volume= 0.033 af, Depth= 3.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.18" Area (sf) CN Description 1,253 98 Paved parking, HSG B 3,029 61 >75% Grass cover, Good, HSG B 4,282 72 Weighted Average 3,029 70.74% Pervious Area 1,253 29.26% Impervious Area Subcatchment PR3: PR3 (TO 78TH ST) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 100-Year Rainfall=7.18" Runoff Area=4,282 sf Runoff Volume=0.033 af Runoff Depth=3.98" Tc=0.0 min CN=72 0.86 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 28HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) [46] Hint: Tc=0 (Instant runoff peak depends on dt) Runoff = 19.48 cfs @ 12.09 hrs, Volume= 0.829 af, Depth= 5.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.18" Area (sf) CN Description 53,142 98 Paved parking, HSG B 23,550 61 >75% Grass cover, Good, HSG B 76,692 87 Weighted Average 23,550 30.71% Pervious Area 53,142 69.29% Impervious Area Subcatchment PR4: PR4 (TO INFILTRATION BASIN 1P) Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100-Year Rainfall=7.18" Runoff Area=76,692 sf Runoff Volume=0.829 af Runoff Depth=5.65" Tc=0.0 min CN=87 19.48 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 29HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Reach 2R: CREEK [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.564 ac, 35.04% Impervious, Inflow Depth = 4.26" for 100-Year event Inflow = 12.70 cfs @ 12.09 hrs, Volume= 1.265 af Outflow = 12.70 cfs @ 12.09 hrs, Volume= 1.265 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach 2R: CREEK Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.564 ac 12.70 cfs 12.70 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 30HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 1.761 ac, 69.29% Impervious, Inflow Depth = 5.65" for 100-Year event Inflow = 19.48 cfs @ 12.09 hrs, Volume= 0.829 af Outflow = 2.20 cfs @ 12.49 hrs, Volume= 0.829 af, Atten= 89%, Lag= 23.8 min Primary = 2.13 cfs @ 12.49 hrs, Volume= 0.829 af Secondary = 0.07 cfs @ 12.49 hrs, Volume= 0.001 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 955.81' @ 12.49 hrs Surf.Area= 7,559 sf Storage= 20,764 cf Plug-Flow detention time= 551.3 min calculated for 0.829 af (100% of inflow) Center-of-Mass det. time= 551.3 min ( 1,321.7 - 770.4 ) Volume Invert Avail.Storage Storage Description #1 952.00' 22,188 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 952.00 3,468 0 0 953.00 4,455 3,962 3,962 954.00 5,502 4,979 8,940 955.00 6,609 6,056 14,996 956.00 7,775 7,192 22,188 Device Routing Invert Outlet Devices #1 Device 2 952.00'1.800 in/hr Exfiltration over Surface area #2 Device 4 950.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 4 955.50'12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 950.50'15.0" Round Culvert L= 90.0' CMP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 950.50' / 948.70' S= 0.0200 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf #5 Secondary 955.80'10.0' long x 3.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32 Primary OutFlow Max=2.12 cfs @ 12.49 hrs HW=955.81' (Free Discharge) 4=Culvert (Passes 2.12 cfs of 12.57 cfs potential flow) 2=Orifice/Grate (Passes 0.31 cfs of 2.13 cfs potential flow) 1=Exfiltration (Exfiltration Controls 0.31 cfs) 3=Orifice/Grate (Weir Controls 1.81 cfs @ 1.83 fps) Secondary OutFlow Max=0.04 cfs @ 12.49 hrs HW=955.81' (Free Discharge) 5=Broad-Crested Rectangular Weir (Weir Controls 0.04 cfs @ 0.29 fps) MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 31HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Pond 1P: FILTRATION BASIN 1 Inflow Outflow Primary Secondary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.761 ac Peak Elev=955.81' Storage=20,764 cf 19.48 cfs 2.20 cfs 2.13 cfs 0.07 cfs MSE 24-hr 3 100-Year Rainfall=7.18"17227 PROPOSED Printed 12/19/2019Prepared by {enter your company name here} Page 32HydroCAD® 10.00-20 s/n 10641 © 2017 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 952.00 3,468 0 952.05 3,517 175 952.10 3,567 352 952.15 3,616 531 952.20 3,665 713 952.25 3,715 898 952.30 3,764 1,085 952.35 3,813 1,274 952.40 3,863 1,466 952.45 3,912 1,661 952.50 3,962 1,857 952.55 4,011 2,057 952.60 4,060 2,258 952.65 4,110 2,463 952.70 4,159 2,669 952.75 4,208 2,879 952.80 4,258 3,090 952.85 4,307 3,304 952.90 4,356 3,521 952.95 4,406 3,740 953.00 4,455 3,962 953.05 4,507 4,186 953.10 4,560 4,412 953.15 4,612 4,642 953.20 4,664 4,873 953.25 4,717 5,108 953.30 4,769 5,345 953.35 4,821 5,585 953.40 4,874 5,827 953.45 4,926 6,072 953.50 4,979 6,320 953.55 5,031 6,570 953.60 5,083 6,823 953.65 5,136 7,078 953.70 5,188 7,337 953.75 5,240 7,597 953.80 5,293 7,861 953.85 5,345 8,126 953.90 5,397 8,395 953.95 5,450 8,666 954.00 5,502 8,940 954.05 5,557 9,216 954.10 5,613 9,496 954.15 5,668 9,778 954.20 5,723 10,063 954.25 5,779 10,350 954.30 5,834 10,640 954.35 5,889 10,934 954.40 5,945 11,229 954.45 6,000 11,528 954.50 6,056 11,829 954.55 6,111 12,134 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 954.60 6,166 12,440 954.65 6,222 12,750 954.70 6,277 13,063 954.75 6,332 13,378 954.80 6,388 13,696 954.85 6,443 14,017 954.90 6,498 14,340 954.95 6,554 14,666 955.00 6,609 14,996 955.05 6,667 15,327 955.10 6,726 15,662 955.15 6,784 16,000 955.20 6,842 16,341 955.25 6,901 16,684 955.30 6,959 17,031 955.35 7,017 17,380 955.40 7,075 17,732 955.45 7,134 18,088 955.50 7,192 18,446 955.55 7,250 18,807 955.60 7,309 19,171 955.65 7,367 19,538 955.70 7,425 19,907 955.75 7,484 20,280 955.80 7,542 20,656 955.85 7,600 21,034 955.90 7,658 21,416 955.95 7,717 21,800 956.00 7,775 22,188