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prepared by Adam Parker PE (MN,WI,TX,BC,AB) <br />387 -Orono Orchard Road -Drainage GRAYS 24 -hr S1 1 -yr Rainfall=2.50" <br />Prepared by {enter your company name here} Printed 6/20/2018 <br />HvdroCADO 10.00-11 s/n 01636 © 2014 HvdroCAD Software Solutions LLC Paae 3 <br />Summary for Subcatchment EX: Existing - Lot 2 area <br />Runoff = 0.78 cfs @ 12.42 hrs, Volume= 0.127 af, Depth> 0.43" <br />Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs <br />GRAYS 24 -hr S1 1 -yr Rainfall=2.50" <br />Area (sf) CN DescriDtion <br />12,609 <br />98 Existing House and Driveway <br />5,109 <br />98 Existing Street on Lot <br />137,755 <br />61 >75% Grass cover, Good, HSG B <br />155,473 <br />65 Weighted Average <br />137,755 <br />88.60% Pervious Area <br />17,718 <br />11.40% Impervious Area <br />Tc <br />Length <br />Slope <br />Velocity Capacity Description <br />(min) <br />(feet) <br />(ft/ft) <br />(ft/sec) (cfs) <br />30.1 <br />850 <br />0.0200 <br />0.47 Lag/CN Method, <br />Subcatchment EX: Existing - Lot 2 area <br />Hydrograph <br />0.85 � <br />0.075 hkA�124-1 r_ 54 11�/rL 0.78 cfs <br />0.7-/Lka�nf�11�4.56 — I -i L <br />0.65- <br />- �_piQolf ►r a�1155i,473�f1 <br />0.55 _'i' _I#_�- yq1(� /p= ..�7t-af <br />3 045 �oill p �V. J <br />656 <br />a 0.35 low -Len `� <br />0.3 [0 <br />p <br />0.25-/tc 36_11 niirtL 1 -L A E <br />0.5 W6I5 T 1 -T <br />o .. <br />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 <br />Time (hours) <br />❑Runoff <br />