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prepared by Adam Parker PE (MN,WI,TX,BC,AB) <br />387 -Orono Orchard Road -Drainage GRAYS 24 -hr S1 10 -yr Rainfall=4.29" <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 9 <br />Summary for Subcatchment PR: Proposed - Subdivided Lot 2 Area <br />Runoff = 4.95 cfs @ 12.32 hrs, Volume= 0.544 af, Depth> 1.77" <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 10 -yr Rainfall=4.29" <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 />I I I ❑Runoff <br />5 '4.95 cfs <br />6RA4 S 124hr S1'10 -yr <br />kailn6ll�:41.20" l <br />4 Runoff Area -160,473 sf <br />Runoff VolluLhme=Q.5441 aiJ 1 <br />3' �,,unoff Deiptl ">I1.177 <br />w Len th= <br />, 2 I� - 850 <br />�ope 00 0� <br />fc=�2�.61 rainI <br />1 GW=71 D <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 />