112 



DIVISION OF WATER RESOURCES 



TABLE 39 



DAILY LOSS OF WATER FROM THE STREAM BETWEEN THE UPPER AND MIDDLE 



CONTROLS IN COLDWATER CANYON 



July 15, to November 2, 1932 



The total use of water between the middle and low^er controls for 

 the six months, May to October, 1932, is indicated as 72 acre-inches per 

 1000 feet of canyon or 64 acre-inches per acre of canyon bottom. 



During 1931, the greatest daily loss from the stream between 

 middle and lower controls was 0.50 acre-inch per 1000 feet of canyon 

 on August 23, and during 1932 it was 0.69 acre-inch per 1000 feet of 

 canyon on September 8. In the latter case the loss is ecjual to 0.61 

 acre-inch per acre, the maximum daily loss for both seasons. 



During August, 1932, the average daily loss from the stream 

 between middle and lower controls per 1000 feet of canyon per day 

 was eciuivalent to 1.05 southern California miner's inches, continuous 

 flow. 



During the 92 days of record during July, August, September, 

 and October of the 1932 season the average daily loss from the stream 

 between the upper and middle controls was 1.77 acre-inches per day, 

 or 0.30 acre-inch per day for each 1000 feet of canyon between the 

 controls. As the area between these controls is 5.89 acres, the loss 

 per day per acre was 0.30 acre-inch. 



A graph of daily use of water for this section, similar to the graph 

 for the lower section of the canyon, is also shown on Plate XXIX. 

 The area below the average curve in this graph indicates the total use 



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