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:9~~ <br /> <br />I • <br />I• <br />40,000 <br />30,000 <br />20,000 <br />10,000 <br />8,000 <br />6,000 <br />1 <br />J <br />~ 4,000 <br />W <br />i 3,000 <br />ti <br />2,000 <br />J <br />W <br />2 <br />Q <br />V 1,000 <br />800 <br />600 <br />soo <br />400 <br />300 <br />200 <br />100 <br />NOMOGRAPH TO DETERMINE <br />TIME OF CONCENTRATION <br />For Use on Drainage Areas ~ 1,000 Acres <br />FIGURE S-6 <br />to <br />20 <br />30 <br />40 <br />60 <br />80 = <br />100 ~ <br />W <br />2 <br />V <br />200 W <br />W <br />vA0 p <br />2 <br />400 <br />W <br />600 ~' <br />800 <br />IAOo <br />2,000 <br />3,000 <br />4,000 <br />s,000 <br />Civil E~q~neb 1940 <br />Zs <br />