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(; <br />11-6 <br />FSosmole ll-1-A watershed with an average elevation of 4,600 feet <br />had temperature station readings of 38° F, at a 5600-foct elevation, <br />and 48° F. at a 3000-foot elevation. The average temperature for <br />the watershed is then: <br />(38) 1000 (4600 - 5600) =42.0 <br />X48) 1000 (4600 - 3000) =41.6 <br />Sum: 63.6 <br />Average: 41.8 <br />.I <br />v <br />.~ <br />c <br />r <br />Y <br />Round off to: 42 <br />^Y <br />they are seldom <br />K factors <br />The constant K in equation 11-1 ie known to vary not only from watershed <br />to watershed, but also from day to day on a given watershed. It is <br />seldom possible to do more than make a broad estimate of K. Aa average <br />value of 0.06 can be used. The following table may be of assistance in y <br />While further refinements, such ae weighting, can be made, <br />justified. <br />special cases: <br />Table 11-3. K factors <br />Condition <br />~ctremely low runoff potential <br />Average heavily-forested erase; <br />north-facing slopes of open country <br />Average <br />South-facing elopes of forested areas; <br />average open country <br />Extremely high runoff potential <br />Recommended by A. L. Sharp. <br />K <br />0.02 <br />.04 - .06 ~ <br />.06 <br />.o6-.osJ <br />.30 <br />_., <br /> <br />y <br />