WATER SUPPLY. For a number of years systematic measurements of the discharge. of both Truckee and Carson rivers have been carried on at several different points for the purpose of determining the character and quantity of their water supply. The results of these investigations are briefly summarized in the following tables: Estimated monthly discharge of Truckee River at Tahoe, Cal. Estimated monthly discharge of Truckee River at Stateline Mills, near Floriston, Cal. Estimated monthly discharge of Truckee River near Vista, Nev. Estimated monthly discharge of West Fork of Carson River at Woodfords, Cal. Estimated monthly discharge of East Fork Carson River at Rodenbah's ranch, near Gard nerville, Nev. Estimated monthly discharge of Carson River at Empire, Nev. Since 1900 numerous surveys of reservoir sites have been made at points where it appeared practicable to impound flood waters to aid in regulating the stream flow. RESERVOIR SURVEYS IN TRUCKEE BASIN. In the basin of the Truckee 7 of these reservoirs surveyed were recommended for construction, and estimates of their cost were prepared. These estimates were published in Water-Supply and Irri gation Paper, No. 68; also in the First Annual Report of the Reclamation Service." The following are the names of the sites surveyed: Lake Tahoe, Donner Lake, Independence Lake, Little Truckee reservoir No. 1, Henness Pass reservoir, Twin Valley reservoir, and Dog Valley reservoir. Of these Little Truckee No. 1 and Henness Pass reservoirs have been resurveyed more in detail during the current year, and revised estimates of their capacity and cost prepared. Areas and capacity of Little Truckee reservoir No. 1. Hydraulic fill, top length 515 feet, top width 25 feet, maximur height 100 feet, slopes 2-1 and 3-1; embankment of earth, 241, 850 cubic yards, at 10 cents $24, 185 24 miles of ditch to supply water for hydraulic fill, capacity 7 second-feet.......... 1,500 800 cubic yards concrete, incasing pipes and in gate tower, etc., at $9.50.. Two 36-inch cast-iron pipes laid in concrete-1,000 feet 36-inch cast-iron pipe laid, at $9.50.. $9,500 7,600 |