Abstract

Snow cover of the Kings River basin in the southern Sierra Nevada (California) decreases each spring at the rate of about 18 mi2/day; since the hypsometric (‘area-elevation’) relation for the basin is almost linear from 7000 to 11,000 ft (1000 to 200 mi2), the ‘equivalent snowline’ rises about 70 ft/day each spring, regardless of the actual amount of snow. Water content of the snowcourses in the basin increases 4 to 5 inches per thousand feet up to at least the 9000-ft level. The courses, however, apparently contain snow more representative of average conditions some 2600 ft higher than their actual elevations These relations have been deduced from estimates of the snow-covered area of the basin made each spring; from readings of the 18 snowcourses in the basin, read one or more times each spring; and from the daily weather observations at Grant Grove.

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