124 



IRRIGATION INVESTIGATIONS IN CALIFORNIA. 



square miles upon which the mean annual precipitation in rain and melted snow is 

 about 5 feet. Storage is had in the following reservoirs: 



Reservoirs on South Fork of Yuba River. 



Name of reservoir. 



Eleva- 

 tion. 



Area. 



Capacity. 



Cost of 

 dam. 



Feet. 



Meadow 7, 515 



Stirling 



7,200 



White Rock 7,000 



Peak Lakes (8) ' 6,900 



Fordyce ' 6, 500 



Lost River ; 7, 000 



Fall Creek Lakes (6) 7,000 



4, 



Spaulding . 



:,846 



Summit Lake I 6, 800 



Bear Valley Reservoir 4, 400 



Acres. 

 300 

 100 



80 

 150 

 474 

 (a) 

 171 

 215 

 400 



60 



Gallons. 

 275,000,000 

 340, 000, 000 

 225, 000, 000 

 275, 000, 000 

 9.50, 000, 000 

 85,000,000 

 020,000,000 

 126,000,000 

 938,816,000 

 145,411,200 



875,000 

 20,000 

 5,000 

 (a) 



300,000 

 (a) 

 (n) 



50,000 

 30,000 

 8,000 



Total . 



1,980 



14,409,227,200 



488,000 



a Records lost. 



The aggregate area of these reservoirs is 3.05 square miles, which is filled to an 

 average depth of 22i^ feet, thus giving storage for about 12 per cent of the mean annual 

 precipitation upon the tributaiy area, the remainder going to waste and to swell the 

 floods which devastate the valley. It is possible, by raising the dams and enlarging 

 the canals, to utilize another considerable fraction. The conditions favoring the 

 conservation of water on the upper one-third of the drainage basin of the South 

 Fork are far more favorable than in the lower two-thirds,«or than those on the other 

 forks. 



Upon the upper portion of Canyon Creek, a tributary of the South Yuba, the 

 Eureka Lake and Yuba Canal Company and the North Bloomfield Gravel and Mining 

 Company have a system of storage reservoirs as follows: 



Reservoirs on Canyon Creek. 



a Barometric 



