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4 <br />1 2 4 6 8 10 20 40 60 80 100 <br />VALUES OF "K" IN THOUSANDS <br />L= Maximum length of travel in feet <br />H - Difference in elevation between most <br />remote point and outlet in feet. <br />S - Slope H/L <br />K= L - H3 <br />graph from Hunter Rouse "Engineering Hydraulics." <br />18 <br />200 400 <br />400 <br />200 <br />100 <br />N <br />80 d <br />C <br />60 'E <br />40 "U <br />h- <br />LL <br />20 H- <br />Z <br />_O <br />F- <br />Q <br />e I— <br />Z <br />6 LU <br />V <br />Z <br />O <br />4 U <br />2 <br />1000 <br />Plate 5 <br />Time of Concentration <br />( OF SMALL AGRICULTURAL DRAINAGE BASIN ) <br />