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<br /> WORKSHElOT 2: Runoff Curve Number .And Runoff <br /> . Projecl: Conage Villas Calculaled By: CNC <br /> Project No, 92-111 Date: 10-22-92 <br /> location: Arden Hills Checked By: <br /> File: TR-55,WR1 Date: <br /> Drainaae Basin: <br /> Developed Condition <br /> Runoff Curve Number (eN) <br /> Soil name Cover Description CN I Area I Producl <br /> and of <br /> hydrologic (cover type, treatment, and from in eN x Area <br /> group hydrologic condition; <br /> pel'Cenl impervious; X_ T~ble 2-2 IX_acre~ <br /> unconnecledfconnecled _ Fig, 2-3 _ sq,ml, <br /> (ADDendix A) imDervious area ralio Fiq, 2-4 I % <br /> Udorthenls Urban lawnlParkinqIBuildinas 90 i 2.5 225,0 <br /> I <br /> I I <br /> . I <br /> I I I I I I <br /> t I I I <br /> ! I I nJ <br /> I 2.5 I <br /> TOTALS <br /> eN (weighted) = total prodUC1 / lotal area = 90.00 <br /> USe eN = I 9^ I <br /> VI <br /> Runoff <br /> I I Slonn #1 I Slonn #2 I Storm #3 I <br /> I I <br /> IFrequency, yr. I 1 I 10 I 100 I <br /> Rainfall. P (24-hourJ, in. ! 2.4 i 4.2 i 5,9 i <br /> Potenlial Retention, S, in. t 1.11 1.11 I 1.11 I <br /> , <br /> IRunoff, G1. in, I 1.44 I 3,11 t 4.75 I <br /> . TR-55 <br /> 7 <br />