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~~• <br /> <br />v <br />ro <br />u <br />N <br />1+ <br />O <br />C <br />0 <br />,i <br />L <br />N <br />7 <br />H <br />W <br /> <br />Detention basin storage <br /> <br />tVorlcsheet Ga: Detention basin storage, <br />peak outflow discharge (qo) known <br />Pro;ent ~r-~~f /N„~~ <br />7 <br />Location Wa5'K J7K,nA <br />r Checked Date <br />Circle one: Present Deve <br />loped /~~gnne~/ <br />1. Data: 6. <br />Drainage area Am O.OD ~ miz <br />Rainfall distribution <br />type (I, IA, II, III) _ <br />ls[ 2nd <br />sta a sta e <br />2. Frequency ...... yr ~~ <br />3. Peak inflow dis- <br />charge, qi • • • • cfs /• 3 /~ <br />(From worksheet 4 or Sb) <br />1/ <br />4. Peak outflow dis- _ <br />charge, qo .... cfs <br />qo [~ <br />5. Compute 9 ........ ` <br />i <br />i/ 2nd Stage qo includes 1st stage qo. <br />By 7J. W. Date /n-6-off <br />Vs ............... <br />r q . <br />(Use ~ with figure 6-1) <br />qi <br />Runoff, Q ..... in ~'4"(' <br />(From worksheet 2) <br />8. Runoff volume, <br />Vr .......... ac-ft O,o-I¢ <br />(Vr = QAm53.33) <br />9. Storage volume, <br />Vs .......... ac-ft O~0 7`~ <br />V = Z~!/~09~4~ <br />(Vs Vr(~s)) ~/ <br />r ITS <br />10, Maximum stage, Emax ._L~J <br />(From plot) <br />~.~,roK. ~rZ ~,ow f., ea~b e.,~; <br />~a~c.timen-(-s nieed ~ A.ld /z,~o- )4,ooi <br />~/• @aa~ 1 /goo~3 <br />i <br />i ~ <br />