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prepared by Adam Parker PE (MN,WI,TX,BC,AB) <br />387 -Orono Orchard Road -Drainage GRAYS 24 -hr S1 100 -yr Rainfall= 7.40 " <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 14 <br />Summary for Subcatchment PR: Proposed - Subdivided Lot 2 Area <br />Runoff = 11.84 cfs @ 12.32 hrs, Volume= 1.251 af, Depth> 4.07" <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 100 -yr Rainfall=7.40" <br />Area (sf) CN DescriDtion <br />15,165 <br />98 <br />Revised Street Section - Expanded Per Orono Requirements <br />4,141 <br />98 <br />New Driveway for New Structures <br />10,500 <br />98 <br />New Structures <br />12,609 <br />98 <br />Existing House and Driveway - No alteration <br />118,058 <br />61 <br />>75% Grass cover, Good, HSG B <br />160,473 <br />71 <br />Weighted Average <br />118,058 <br />73.57% Pervious Area <br />42,415 <br />26.43% Impervious Area <br />Tc <br />Length <br />Slope <br />Velocity Capacity Description <br />min) <br />(feet) <br />(ft/ft) <br />(ft/sec) (cfs) <br />25.6 <br />850 <br />0.0200 <br />0.55 Lag/CN Method, <br />Subcatchment PR: Proposed - Subdivided Lot 2 Area <br />Hydrograph <br />13 _T T_ T I I _F I <br />11.8412 cfs <br />11 RAS 12�-hlr � 11 0-jf 1- <br />10 �I ailnf�ll 7.40" - —I -I- <br />9 adoff Area=160,473 # I <br />8 up off Ilu1n�=j .11__afj <br />0 7 ° Pept�>�.Q7� <br />- 6I w nth= <br />,� 5 I l� e 8501 <br />S� 4p�� QQ <br />4 1 Tc;�2..61 xiin_ 1 1 1 <br />2 <br />1 1 1 1 1 1 1 1 1 1 1 1 <br />I� + 14 �- I� <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 />