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Agenda - Planning Commission - 06/12/2017 - Special
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Agenda - Planning Commission - 06/12/2017 - Special
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Last modified
3/21/2025 10:28:31 AM
Creation date
12/13/2017 1:46:31 PM
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Meetings
Meeting Document Type
Agenda
Meeting Type
Planning Commission
Document Title
Special
Document Date
06/12/2017
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ZZZ15326 Existing Proposed Drainage - Wetland <br />Prepared by Microsoft <br />HydroCAD® 10.00-14 s/n 01542 ©2015 HydroCAD Software Solutions LLC <br />Type 11 24-hr 2-yr Rainfall=2.86" <br />Printed 6/8/2017 <br />Paae 9 <br />Summary for Subcatchment 4S: TO INFILTRATION B <br />Runoff = 0.53 cfs @ 11.99 hrs, Volume= <br />0.035 af, Depth= 0.57" <br />Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Type II 24-hr 2-yr Rainfall=2.86" <br />Area (sf) CN Description <br />6,115 98 Paved parking, HSG B <br />12,000 39 >75% Grass cover, Good, HSG A <br />13,986 61 >75% Grass cover, Good, HSG B <br />32,101 60 Weighted Average <br />25,986 51 80.95% Pervious Area <br />6,115 98 19.05% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />7.9 100 0.0400 0.21 Sheet Flow, <br />Grass: Short n= 0.150 P2= 2.85" <br />0.55 <br />0.5 <br />0.45 <br />0.4 <br />0.35 <br />0.3 <br />LT_ 0.25 <br />0.2 <br />0.15 <br />0.1 <br />0.05 <br />Subcatchment 4S: TO INFILTRATION B <br />Hyd rog raph <br />yp0 g4-00 <br />2-yr Rainfall=2 86 <br />Runoff Area= 32.1p,�....... ......... <br />......... .... <br />Runoff. yoI ntia= :Op of . <br />Ru n off Depth _ 57 <br />Flow Length=l00 <br />:& <br />CN-51-/9s . <br />0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 <br />Time (hours) <br />■ Runoff <br />
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