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<br />HYDROGRAPH COMPUTATION
<br />
<br />Lf!.<::
<br />
<br />Date/lf~":1 ~'~, J'1./~l
<br />Computed by .( r r
<br />Checked by
<br />
<br />s.c.s. NATIONi'lL ENGINFF,:,rJG HIJIJDPr'Cl,...--E')U::Gr"JC(' SP/UU,h;/v' JlVDr:OGi:/jl"'l/
<br />Location I': I _ '.l{J cr:-(I '0 Lei /G..":/A).(
<br />
<br />Dr. Area'lO').!")sq.mi. Structure Class
<br />
<br />Tc 2'-/, I Hr. Storm Duration 2. L/ Hr.
<br />Point Rainfall 3, '75 in.
<br />
<br />Adjusted rainfall:
<br />Areal: Factor 0,?;"3
<br />Duration: Factor I,'-{g
<br />
<br />Runof f Curve No. 77
<br />
<br />Q 2 , :W in .
<br />
<br />Hydrograph Family No. 3
<br />
<br />In. 3,/1
<br />In. ,-/, b}
<br />
<br />Computed Tp 1(',8'7 Hr.=0-7~= 0.'7(2<-1,/)
<br />
<br />T /8,2.7 Hr. PK:O.bO J P?,p :0.13
<br />o T.Y'>\('. Rcdl":O. 751:3
<br />(T IT ): 1;' (0 ,7Se)(;: <I. I)
<br />o p
<br />
<br />Computed 1,0';-) Used 1,0
<br />Revised T 18.'2-7
<br /> p
<br />q = 484A = /8 'In CFS
<br />p REV T
<br /> . P
<br />(Q) (qp) = ~n . '2. I G CFS
<br />t{Column) = (tiT ) REV T
<br /> . P P
<br />q{Column) = (qc/qpXQxqp)
<br />Q{Column = {Qt/Q)Q
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<br />1
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<br />t
<br />HOURS
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<br />PEIlK
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<br />Q
<br />INCHES
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