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<br />~ <br /> <br />Worksheet 3: Graphical Peak Discharge method <br /> <br />Project ..k1 A(A{ '[rtvtiL ~~~ <br /> <br />By j'DM <br /> <br />Date <br /> <br />Location <br />Circle one:~~ Developed <br /> <br /> <br />1. Data: <br /> <br />Checked Date <br />- <br /> <br />Drainage area <br /> <br />.......... <br /> <br />"m -0.006 ~ G m12 (acres/640) <br /> <br />CN . ~ (From worksheet 1) <br />Tc. O.O~ (From worksheet 2) <br /> <br />Runoff curve number .... <br /> <br />Time of concentration .. <br /> <br />2. Frequency.. .. . . ..e . .. . . . . . . . .. .. . .. . .. . .. yr <br /> <br />Storm f1 Storm '2 Storm-,3 <br /> -- <br />. \ \00 <br />'2.. ~ S.q <br /> <br />3. Rainfall, P (24-hour) ................... in <br /> <br />6. Unit peak discharge, q ................. <br />u <br />(Use Tcand. 1,/: with figure 7.1-5) <br /> <br />csm/in <br /> <br />in ICD. >'8 I 10. 'S81 I <br />10,"6 lo.oGS I <br />L9BO IlooO I <br />in I~.q<o 14.2 1 <br />I G. t I I U.1 , I <br /> <br />4. Initial abstraction, Ia ................. <br />(Use CN with table 7.1~6) <br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />s. Compute la/P ............................ <br /> <br />7. Runoff, Q ............................... <br /> <br />Cf-~ ~~ ,) <br /> <br />8. Peak discharge, qp ...............,....... <br /> <br />(Where qp · quAmQFp) <br /> <br />cfs <br /> <br />,- <br /> <br />10/89 <br /> <br />7.1-33 <br />