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W0101 <br />Land Use or Surface Characteristic <br />Business <br />Commercial Arm <br />Neighborhood Areas <br />Residential <br />Single Family (note 1) <br />Multi -unit (detached) <br />Multi-unit (attached) <br />Apartments <br />Industrial <br />Light <br />Hcavy <br />Parks, cemeteries <br />Playgrounds <br />Schools <br />Railroad yards <br />Irrigated Areas <br />Laces, parks, golf course <br />Agriculture <br />Undeveloped fir cas <br />Pro-developrwnt conditions <br />GreenbcIts, agriculture <br />Of analysis when land usc <br />Unknown <br />paved <br />Gravel <br />Drivel Walks <br />Roofs <br />• <br />Average <br />Runoff Curve Number <br />Soil C"..arn lex <br />Imperv. <br />A C <br />85 <br />89 <br />_13 <br />92 <br />94 95 <br />70 <br />80 <br />87 <br />91 9 <br />(note 1) <br />60 <br />74 <br />8, <br />88 <br />1 91 <br />75 <br />83 <br />89 <br />i 92 <br />94 <br />80 <br />86 <br />86 <br />91 <br />91 <br />93 <br />94 <br />80 <br />93 <br />94 <br />90 <br />92 <br />94 <br />96 <br />— 751 <br />96 <br />81 <br />5 <br />- 42 <br />10 <br />45 <br />65 <br />76) <br />42 <br />50 <br />69 <br />so <br />86 89 <br />78 <br />74 80 <br />74 80 <br />15 <br />49 <br />67 <br />0 <br />0 <br />39 <br />39 <br />61 <br />61 <br />– ------------- <br />2 <br />40 <br />62 <br />74 I <br />80 <br />2 <br />40 <br />62 i <br />74 <br />80 <br />45 <br />66 <br />78 <br />85 <br />88 <br />70 <br />80 <br />87 <br />94 <br />]Go <br />98 <br />98 <br />98 <br />98 <br />40 <br />63 <br />76 <br />84 <br />87 <br />96 <br />90 <br />92 <br />94 <br />94 <br />96 <br />90 <br />92 <br />96 <br />96 <br />NOTE. <br />ESTIMATE IMPERVIOUS FROM FIGURES 703,704,705. THEN COMPUTE CURVE NUMBER, CN, FROM <br />EQUATION M, BASED ON MRCS SOILS TYPE. USE OF THIS TABLE IS LIMITED TO EVALUATION OF <br />IMPERVIOUSNESS FOR FUYURE DEVELOPMENT PROJEC IIONS WIYHIN1 REGK)NAL WATERSHED MASTER <br />PLANS, OR IN CONCEPTUAL DRAINAGE PLANS, <br />!REFERENCE: <br />SCS TECHNICAL RELEASE NO. 55 (1986) <br />