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// ~OPeit~l•' l3 <br />~Vorkshcet 2: Runoff curve number and runoff <br />Project ~/-i '~ ~rle By D. w. Date /0-6-0¢ <br />Location Kl4S'r2 f74 ~ryp Checked Date <br />Circle one: Present Developed {~~gryNec` <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) (covet type, treatment, and <br />hydrologic condition; <br />percent impervious; <br />unconnected/connected .impervious <br />area ratio) ~~ <br />N <br />y <br />P <br />ro <br />H <br />`i <br />~' <br />~ <br />''~ <br />W <br />~ <br />N <br />~ <br />"~ <br />W <br />acres <br />^ mid <br />^ CN x area <br /> was•I-e Rock ~,le ~ ~e$u,~ale <br />-1-~ Ur6y~ Newl ra~e~ NeCouer <br />gb <br />Z <br />/7Z <br /> <br /> <br /> <br /> <br /> <br /> <br />1/ Use only one CN source per line. Totals = <br />CN (weighted) = total product - <br />total area <br />2. Runoff <br />Frequency .............................. yr <br />Rainfall, P (24-hour) .................. in <br />Runoff, R ................ ........ in <br />(Use P and CN with tabl 2- fig. 2-1, <br />or eqs. 2-3 and 2-4.) <br />Use CN ~1~ <br />Storm I{I Storm !/Z Storm 1/3 <br />~~ <br />~~ S <br />0.~6 <br />D.? (21D-VI-TR-vv, Second l;d., June 1986) <br />