Laserfiche WebLink
Worksheet 2: Runoff curve number and runoff <br />Project SDH#4 ,~,gFA "C" 8y DGA Date 7/1/93 <br />M Location D,2i~r 7J.-lore To ~o.Sn Checked Date <br />Circle one: Present Developed <br />1. Runoff curve number (CN) <br />i <br />Soil name <br />and Cover description i/ <br />CN - Area Product <br />of <br />hydrologic <br />group <br /> <br /> <br />(appendix A) (cover type, treatment, and <br />hydrologic condition; <br />percent impervious; <br />unconnected/connected impervious <br />area ratio) ~~ <br />N <br />v <br />a <br />EW„ ~ <br />~ <br />`~' <br />~ <br />w ~ <br />~ <br />`" <br />oo <br />W <br />Q acres <br />^mi'- <br />^ X CN x area <br />MOYERSON <br />"D" NEFTLY GFiADID <br />NO VF]C~.TATIOL] <br />94 <br />0. ; =. 12.22 <br /> <br /> <br /> <br /> <br /> <br /> <br />1/ Use only one CN source per line. Tocals ~ 0•t3 12.22 <br />CN (weighted) a total product X2.2 Z~ 94 Use CN ~ 94 <br />total area ~ O.l~j <br />2. Runoff <br />Frequency .............................. yr <br />Rainfall, P (24-hour) .................. in <br />Storm M1 'Storm A2 Storm 83 <br />lOYR 25YR <br />1,4 1,8 <br />0.84 1.21 <br />Runoff, Q ..... ......... ........ in <br />• (Use P and CN•vith table•2-L, fig. •2-1, <br />ur eqs. 2-3 and 2-4,) <br /><2-7 <br />[)•'1 (°lU•VI•TR-SS. Second Ed., June 19861 <br />