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Appe~~,x C <br />Worksheet 2: Runoff curve number and runoff <br />Sub <br />basin <br />~r <br />5u b bas~q <br />~rZ <br />Project w~`,~f /~~ne By ~~'`~ <br />Location G(Ps~re~am o~ Waste /'o c% Checked <br />Circle one: resent Developed <br />1. Runoff curve number <br />Soil name Cover description i/ Area Product <br />and CN - of <br />hydrologic (cover type, treatment, and c~ CN x area <br />group hydrologic condition; N i' ~i .acres <br /> percent impervious; v `~ N ^ mi2 <br /> unconnected/connected impervious P ~ ~ ^ <br />(appendix A) area ratio) m <br />H ''~ <br />W "~ <br />W <br /> elay~ son y s/opes 5P4~'se <br /> s4nds+~~e bedbok ~ sp~+^se g~+rs <br />/(in sor ~ ,sh.~adr ac ('-.T Forests l~eo.- ~d,{wy 7S ~. Z 3 90 <br />gfK,~ Sm~ <br />B same 7s 12.3 9~z• s <br /> <br /> <br /> <br /> <br /> <br />1/ Use only one CN source per line. Totals = /7.3 /3iZ' s <br />total product _ <br />CN (weighted) = total area <br />Date /~-2$~-O¢ <br />Date <br />= Use CN = 7s <br />su66us.., ~ skdda~., <br />Frequency .............................. yr <br />Rainfall, P (24-hour) .................. in <br />Runoff, Q ............. .... ... in <br />(Use P and CN with table 2-1 •fig.•2-1, <br />or eqs. 2-3 and 2-4.) <br />Storm 711 Storm 712 Storm 713 <br />(OO /DO <br />z.3 ~•3 <br />D . Sit o ..s-4- <br />D-2 (210-VI-TR-55, Second Ed., June 1986) <br />