these are numerous glaciated valleys, terminating frequently in narrow canyon outlets and affording the reservoir sites which have been examined. The water stored in the reservoirs of the High Sierras which were examined and surveyed in this division must all be returned to the main rivers, down which it will take its course, frequently from 150 to 200 miles, to the San Joaquin Valley before the irrigable lands will be reached. Little Yosemite. This site (see Pl. LXXXVIII, No. 7), is reached by trail 6 miles from Yosemite Valley or 8 miles from Glacier Point. Good timber is abundant, and sufficient loose rock can be had with about one-third of a mile haul to construct the main dam. There are two dams required, and estimates are given for heights of contour. The lower of these dams will be 115 feet in height and 915 feet long, making a lake of 862 acres, having a capacity of 45,000 acre-feet. Lake Tenaiya.-This lake, shown on Pl. LXXXIX, No. 8, is situated on the Tioga toll road, distant 110 miles from Milton. The watershed is about 11 square miles. The dam site, is nearly all clean granite, with a foot or so of loam in places. Stone will be quarried from either end of the dam. Good loamy soil can be had with a haul of 1,000 feet. The main dam is 725 feet long; a lateral dam is 350 feet long and 35 feet high. The area of reservoir Pl. xc, will be 597 acres and the capacity 23,000 acre-feet. · Tuolumne Meadows.-This is a valley (see Pl. LXXXIX, No. 9), on the Upper Tuolumne River, about 15 miles from its headwaters. It is 116 miles from Milton, and is reached by the Tioga wagon-road, which passes through the valley. Stone can be had at each end of the main dam by quarrying; also from the sides, but below the level of the dam. Good loamy soil can be had with an average haul of 1,700 feet. The main dam, is 870 feet long and 75 feet high. There are three lateral dams, whose dimensions are, respectively, 250 feet long and 18 feet high, 515 feet long and 65 feet high, and 710 feet long and 45 feet high. The area of the reservoir Pls. XCII and XCIII, is 1,081 acres and its capacity is 43,185 acre-feet. Lake Eleanor-Lake Eleanor (see Pl. xcI, No. 10), is one of |