The water‐year of 1942–43, because of the normality of its weather featuring has provided further opportunity to confirm the potency of high water‐table on the runoff of the upper Humboldt and determine its relative effect. The only questionable factor is that of precipitation and snow‐cover. The former for November to February was 137.6 per cent of normal and the snow‐cover for March 1 was 91.5 per cent of normal but at low levels only 42.1 per cent. Fortunately in the central Sierra, with almost identical conditions of precipitation and snow‐cover, the percentage of runoff was closely similar to that of the snow at the higher levels. Therefore, for purposes of comparison the snow‐cover in the Humboldt Basin may be considered reliable and its effectiveness as approximating 91.5 per cent of its normal.
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Church et al. (1944) studied this question.
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