240916_40 ERW Stormwater Report FULL

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 9HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment EX 1-I: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.01 0.00 3.00 0.13 0.03 0.01 4.00 0.18 0.06 0.01 5.00 0.24 0.09 0.01 6.00 0.29 0.14 0.01 7.00 0.36 0.20 0.01 8.00 0.45 0.27 0.02 9.00 0.55 0.36 0.02 10.00 0.68 0.49 0.03 11.00 0.89 0.69 0.06 12.00 1.65 1.43 0.50 13.00 2.55 2.32 0.07 14.00 2.76 2.53 0.04 15.00 2.89 2.66 0.02 16.00 2.99 2.76 0.02 17.00 3.08 2.85 0.02 18.00 3.15 2.91 0.01 19.00 3.20 2.97 0.01 20.00 3.26 3.03 0.01 21.00 3.31 3.08 0.01 22.00 3.36 3.12 0.01 23.00 3.40 3.17 0.01 24.00 3.44 3.21 0.01 25.00 3.44 3.21 0.00 26.00 3.44 3.21 0.00 27.00 3.44 3.21 0.00 28.00 3.44 3.21 0.00 29.00 3.44 3.21 0.00 30.00 3.44 3.21 0.00 31.00 3.44 3.21 0.00 32.00 3.44 3.21 0.00 33.00 3.44 3.21 0.00 34.00 3.44 3.21 0.00 35.00 3.44 3.21 0.00 36.00 3.44 3.21 0.00 37.00 3.44 3.21 0.00 38.00 3.44 3.21 0.00 39.00 3.44 3.21 0.00 40.00 3.44 3.21 0.00 41.00 3.44 3.21 0.00 42.00 3.44 3.21 0.00 43.00 3.44 3.21 0.00 44.00 3.44 3.21 0.00 45.00 3.44 3.21 0.00 46.00 3.44 3.21 0.00 47.00 3.44 3.21 0.00 48.00 3.44 3.21 0.00 49.00 3.44 3.21 0.00 50.00 3.44 3.21 0.00 51.00 3.44 3.21 0.00 52.00 3.44 3.21 0.00 53.00 3.44 3.21 0.00 54.00 3.44 3.21 0.00 55.00 3.44 3.21 0.00 56.00 3.44 3.21 0.00 57.00 3.44 3.21 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 3.21 0.00 59.00 3.44 3.21 0.00 60.00 3.44 3.21 0.00 61.00 3.44 3.21 0.00 62.00 3.44 3.21 0.00 63.00 3.44 3.21 0.00 64.00 3.44 3.21 0.00 65.00 3.44 3.21 0.00 66.00 3.44 3.21 0.00 67.00 3.44 3.21 0.00 68.00 3.44 3.21 0.00 69.00 3.44 3.21 0.00 70.00 3.44 3.21 0.00 71.00 3.44 3.21 0.00 72.00 3.44 3.21 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 10HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment EX 1-P: Runoff = 0.95 cfs @ 12.19 hrs, Volume= 0.083 af, Depth= 1.26" Routed to Reach 4R : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 32,830 74 >75% Grass cover, Good, HSG C 1,480 89 Gravel roads, HSG C 34,310 75 Weighted Average 34,310 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 100 0.0175 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.4 133 0.1070 5.27 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 10.4 233 Total Subcatchment EX 1-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 1 0 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=34,310 sf Runoff Volume=0.083 af Runoff Depth=1.26" Flow Length=233' Tc=10.4 min CN=75 0.95 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 11HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment EX 1-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.00 0.00 3.00 0.13 0.00 0.00 4.00 0.18 0.00 0.00 5.00 0.24 0.00 0.00 6.00 0.29 0.00 0.00 7.00 0.36 0.00 0.00 8.00 0.45 0.00 0.00 9.00 0.55 0.00 0.00 10.00 0.68 0.00 0.00 11.00 0.89 0.01 0.02 12.00 1.65 0.22 0.35 13.00 2.55 0.68 0.17 14.00 2.76 0.81 0.08 15.00 2.89 0.89 0.06 16.00 2.99 0.96 0.05 17.00 3.08 1.01 0.04 18.00 3.15 1.06 0.03 19.00 3.20 1.10 0.03 20.00 3.26 1.13 0.03 21.00 3.31 1.17 0.03 22.00 3.36 1.20 0.03 23.00 3.40 1.23 0.02 24.00 3.44 1.26 0.02 25.00 3.44 1.26 0.00 26.00 3.44 1.26 0.00 27.00 3.44 1.26 0.00 28.00 3.44 1.26 0.00 29.00 3.44 1.26 0.00 30.00 3.44 1.26 0.00 31.00 3.44 1.26 0.00 32.00 3.44 1.26 0.00 33.00 3.44 1.26 0.00 34.00 3.44 1.26 0.00 35.00 3.44 1.26 0.00 36.00 3.44 1.26 0.00 37.00 3.44 1.26 0.00 38.00 3.44 1.26 0.00 39.00 3.44 1.26 0.00 40.00 3.44 1.26 0.00 41.00 3.44 1.26 0.00 42.00 3.44 1.26 0.00 43.00 3.44 1.26 0.00 44.00 3.44 1.26 0.00 45.00 3.44 1.26 0.00 46.00 3.44 1.26 0.00 47.00 3.44 1.26 0.00 48.00 3.44 1.26 0.00 49.00 3.44 1.26 0.00 50.00 3.44 1.26 0.00 51.00 3.44 1.26 0.00 52.00 3.44 1.26 0.00 53.00 3.44 1.26 0.00 54.00 3.44 1.26 0.00 55.00 3.44 1.26 0.00 56.00 3.44 1.26 0.00 57.00 3.44 1.26 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 1.26 0.00 59.00 3.44 1.26 0.00 60.00 3.44 1.26 0.00 61.00 3.44 1.26 0.00 62.00 3.44 1.26 0.00 63.00 3.44 1.26 0.00 64.00 3.44 1.26 0.00 65.00 3.44 1.26 0.00 66.00 3.44 1.26 0.00 67.00 3.44 1.26 0.00 68.00 3.44 1.26 0.00 69.00 3.44 1.26 0.00 70.00 3.44 1.26 0.00 71.00 3.44 1.26 0.00 72.00 3.44 1.26 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 12HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment EX 2-P: Runoff = 0.88 cfs @ 12.18 hrs, Volume= 0.077 af, Depth= 1.20" Routed to Reach 2R : CHANNEL Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 32,438 74 >75% Grass cover, Good, HSG C 989 89 Gravel roads, HSG C 33,427 74 Weighted Average 33,427 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 100 0.0200 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.4 47 0.0170 2.10 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.3 88 0.0680 4.20 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 16 0.4200 10.43 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 10.1 251 Total Subcatchment EX 2-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (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 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=33,427 sf Runoff Volume=0.077 af Runoff Depth=1.20" Flow Length=251' Tc=10.1 min CN=74 0.88 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 13HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment EX 2-P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.00 0.00 3.00 0.13 0.00 0.00 4.00 0.18 0.00 0.00 5.00 0.24 0.00 0.00 6.00 0.29 0.00 0.00 7.00 0.36 0.00 0.00 8.00 0.45 0.00 0.00 9.00 0.55 0.00 0.00 10.00 0.68 0.00 0.00 11.00 0.89 0.01 0.02 12.00 1.65 0.20 0.32 13.00 2.55 0.63 0.16 14.00 2.76 0.76 0.08 15.00 2.89 0.84 0.06 16.00 2.99 0.90 0.05 17.00 3.08 0.96 0.04 18.00 3.15 1.00 0.03 19.00 3.20 1.04 0.03 20.00 3.26 1.08 0.03 21.00 3.31 1.11 0.03 22.00 3.36 1.14 0.02 23.00 3.40 1.17 0.02 24.00 3.44 1.20 0.02 25.00 3.44 1.20 0.00 26.00 3.44 1.20 0.00 27.00 3.44 1.20 0.00 28.00 3.44 1.20 0.00 29.00 3.44 1.20 0.00 30.00 3.44 1.20 0.00 31.00 3.44 1.20 0.00 32.00 3.44 1.20 0.00 33.00 3.44 1.20 0.00 34.00 3.44 1.20 0.00 35.00 3.44 1.20 0.00 36.00 3.44 1.20 0.00 37.00 3.44 1.20 0.00 38.00 3.44 1.20 0.00 39.00 3.44 1.20 0.00 40.00 3.44 1.20 0.00 41.00 3.44 1.20 0.00 42.00 3.44 1.20 0.00 43.00 3.44 1.20 0.00 44.00 3.44 1.20 0.00 45.00 3.44 1.20 0.00 46.00 3.44 1.20 0.00 47.00 3.44 1.20 0.00 48.00 3.44 1.20 0.00 49.00 3.44 1.20 0.00 50.00 3.44 1.20 0.00 51.00 3.44 1.20 0.00 52.00 3.44 1.20 0.00 53.00 3.44 1.20 0.00 54.00 3.44 1.20 0.00 55.00 3.44 1.20 0.00 56.00 3.44 1.20 0.00 57.00 3.44 1.20 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 1.20 0.00 59.00 3.44 1.20 0.00 60.00 3.44 1.20 0.00 61.00 3.44 1.20 0.00 62.00 3.44 1.20 0.00 63.00 3.44 1.20 0.00 64.00 3.44 1.20 0.00 65.00 3.44 1.20 0.00 66.00 3.44 1.20 0.00 67.00 3.44 1.20 0.00 68.00 3.44 1.20 0.00 69.00 3.44 1.20 0.00 70.00 3.44 1.20 0.00 71.00 3.44 1.20 0.00 72.00 3.44 1.20 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 14HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment EX 3 - P: Runoff = 0.42 cfs @ 12.15 hrs, Volume= 0.032 af, Depth= 1.32" Routed to Reach 3R : TOTAL Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 11,505 74 >75% Grass cover, Good, HSG C 1,312 89 Gravel roads, HSG C 12,817 76 Weighted Average 12,817 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.4 72 0.0280 0.19 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 1.4 28 0.1790 0.33 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.0 9 0.2220 7.59 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.8 109 Total Subcatchment EX 3 - P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 0.46 0.44 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 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=12,817 sf Runoff Volume=0.032 af Runoff Depth=1.32" Flow Length=109' Tc=7.8 min CN=76 0.42 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 15HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment EX 3 - P: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.00 0.00 3.00 0.13 0.00 0.00 4.00 0.18 0.00 0.00 5.00 0.24 0.00 0.00 6.00 0.29 0.00 0.00 7.00 0.36 0.00 0.00 8.00 0.45 0.00 0.00 9.00 0.55 0.00 0.00 10.00 0.68 0.00 0.00 11.00 0.89 0.02 0.01 12.00 1.65 0.25 0.17 13.00 2.55 0.72 0.06 14.00 2.76 0.86 0.03 15.00 2.89 0.94 0.02 16.00 2.99 1.01 0.02 17.00 3.08 1.07 0.02 18.00 3.15 1.11 0.01 19.00 3.20 1.16 0.01 20.00 3.26 1.19 0.01 21.00 3.31 1.23 0.01 22.00 3.36 1.26 0.01 23.00 3.40 1.29 0.01 24.00 3.44 1.32 0.01 25.00 3.44 1.32 0.00 26.00 3.44 1.32 0.00 27.00 3.44 1.32 0.00 28.00 3.44 1.32 0.00 29.00 3.44 1.32 0.00 30.00 3.44 1.32 0.00 31.00 3.44 1.32 0.00 32.00 3.44 1.32 0.00 33.00 3.44 1.32 0.00 34.00 3.44 1.32 0.00 35.00 3.44 1.32 0.00 36.00 3.44 1.32 0.00 37.00 3.44 1.32 0.00 38.00 3.44 1.32 0.00 39.00 3.44 1.32 0.00 40.00 3.44 1.32 0.00 41.00 3.44 1.32 0.00 42.00 3.44 1.32 0.00 43.00 3.44 1.32 0.00 44.00 3.44 1.32 0.00 45.00 3.44 1.32 0.00 46.00 3.44 1.32 0.00 47.00 3.44 1.32 0.00 48.00 3.44 1.32 0.00 49.00 3.44 1.32 0.00 50.00 3.44 1.32 0.00 51.00 3.44 1.32 0.00 52.00 3.44 1.32 0.00 53.00 3.44 1.32 0.00 54.00 3.44 1.32 0.00 55.00 3.44 1.32 0.00 56.00 3.44 1.32 0.00 57.00 3.44 1.32 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 1.32 0.00 59.00 3.44 1.32 0.00 60.00 3.44 1.32 0.00 61.00 3.44 1.32 0.00 62.00 3.44 1.32 0.00 63.00 3.44 1.32 0.00 64.00 3.44 1.32 0.00 65.00 3.44 1.32 0.00 66.00 3.44 1.32 0.00 67.00 3.44 1.32 0.00 68.00 3.44 1.32 0.00 69.00 3.44 1.32 0.00 70.00 3.44 1.32 0.00 71.00 3.44 1.32 0.00 72.00 3.44 1.32 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 16HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 1A-I: Runoff = 0.24 cfs @ 12.07 hrs, Volume= 0.018 af, Depth= 3.21" Routed to Reach EX 1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 2,919 98 Paved roads w/curbs & sewers, HSG C 2,919 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 100 0.0140 1.24 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" 0.3 49 0.0180 2.72 Shallow Concentrated Flow, Paved Kv= 20.3 fps 1.6 149 Total Subcatchment PR 1A-I: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 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 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=2,919 sf Runoff Volume=0.018 af Runoff Depth=3.21" Flow Length=149' Tc=1.6 min CN=98 0.24 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 17HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1A-I: Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 0.00 0.00 0.00 0.00 1.00 0.04 0.00 0.00 2.00 0.08 0.01 0.00 3.00 0.13 0.03 0.00 4.00 0.18 0.06 0.00 5.00 0.24 0.09 0.00 6.00 0.29 0.14 0.00 7.00 0.36 0.20 0.00 8.00 0.45 0.27 0.01 9.00 0.55 0.36 0.01 10.00 0.68 0.49 0.01 11.00 0.89 0.69 0.02 12.00 1.65 1.43 0.15 13.00 2.55 2.32 0.02 14.00 2.76 2.53 0.01 15.00 2.89 2.66 0.01 16.00 2.99 2.76 0.01 17.00 3.08 2.85 0.01 18.00 3.15 2.91 0.00 19.00 3.20 2.97 0.00 20.00 3.26 3.03 0.00 21.00 3.31 3.08 0.00 22.00 3.36 3.12 0.00 23.00 3.40 3.17 0.00 24.00 3.44 3.21 0.00 25.00 3.44 3.21 0.00 26.00 3.44 3.21 0.00 27.00 3.44 3.21 0.00 28.00 3.44 3.21 0.00 29.00 3.44 3.21 0.00 30.00 3.44 3.21 0.00 31.00 3.44 3.21 0.00 32.00 3.44 3.21 0.00 33.00 3.44 3.21 0.00 34.00 3.44 3.21 0.00 35.00 3.44 3.21 0.00 36.00 3.44 3.21 0.00 37.00 3.44 3.21 0.00 38.00 3.44 3.21 0.00 39.00 3.44 3.21 0.00 40.00 3.44 3.21 0.00 41.00 3.44 3.21 0.00 42.00 3.44 3.21 0.00 43.00 3.44 3.21 0.00 44.00 3.44 3.21 0.00 45.00 3.44 3.21 0.00 46.00 3.44 3.21 0.00 47.00 3.44 3.21 0.00 48.00 3.44 3.21 0.00 49.00 3.44 3.21 0.00 50.00 3.44 3.21 0.00 51.00 3.44 3.21 0.00 52.00 3.44 3.21 0.00 53.00 3.44 3.21 0.00 54.00 3.44 3.21 0.00 55.00 3.44 3.21 0.00 56.00 3.44 3.21 0.00 57.00 3.44 3.21 0.00 Time (hours) Precip. (inches) Excess (inches) Runoff (cfs) 58.00 3.44 3.21 0.00 59.00 3.44 3.21 0.00 60.00 3.44 3.21 0.00 61.00 3.44 3.21 0.00 62.00 3.44 3.21 0.00 63.00 3.44 3.21 0.00 64.00 3.44 3.21 0.00 65.00 3.44 3.21 0.00 66.00 3.44 3.21 0.00 67.00 3.44 3.21 0.00 68.00 3.44 3.21 0.00 69.00 3.44 3.21 0.00 70.00 3.44 3.21 0.00 71.00 3.44 3.21 0.00 72.00 3.44 3.21 0.00 This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.

NOAA 24-hr D 2-Year Rainfall=3.44"240913_40 ERW Waymaker Proposed Printed 9/16/2024Prepared by Colliers Engineering & Design Page 18HydroCAD® 10.20-2g s/n 04431 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment PR 1A-P: Runoff = 0.57 cfs @ 12.19 hrs, Volume= 0.050 af, Depth= 1.20" Routed to Reach EX 1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) CN Description 21,722 74 >75% Grass cover, Good, HSG C 21,722 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.1 100 0.0220 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 1.4 295 0.0500 3.60 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 10.5 395 Total Subcatchment PR 1A-P: Runoff Hydrograph Time (hours) 727068666462605856545250484644424038363432302826242220181614121086420 Flow (cfs) 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 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=21,722 sf Runoff Volume=0.050 af Runoff Depth=1.20" Flow Length=395' Tc=10.5 min CN=74 0.57 cfs This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.