158 



DIVISION OF WATER RESOURCES 



PLATE VIII 



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q; 6Vi 90" 



JULY 





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SEPT 



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a. 3 



SEPT 



CORRECTED OUTFLOW 



CORRECTED OUTFLOW 



SANTA ANA RIVER 

 1932 



Relationship between Temperature, Evaporation 

 and Corrected Outflow from Hamner Ave. to A.T&S.F Ry. 



vary directly v;^itli the evaporation at Prado. The 1931 data (Prado) 

 seem to indicate that for each 0.10 inch of evaporation from the stand- 

 ard Weather Bureau gage the corrected outflow is reduced 6.0 second- 

 feet. The 1932 data (Pomona) gave 6.3 second-feet for each 0.10 

 inch of evaporation from the evaporimeter. 



Next, the relation of the transpiration at well D to the corrected 

 outflow was determined by the use of the formula (24r ± s), taken from 

 the equation q = y (24r ±: s) . The results showed that for each 0.10 

 foot of ground water transpired, as computed by the formula 

 (24r ±: s), there was a loss of 15.4 second-feet in the corrected outflow 

 in 1931 and 17.6 second-feet in 1932. 



From the data determined from Plate VTII and similar graphs 

 Table 3 has been developed. This table gives the estimated inflow 

 between the gaging stations at Hamner Avenue and The Atchison. 

 Topeka and Santa Fe Railway Bridge. Column A represents the daily 

 measured outflow from the area, that is, the gain in the flow of the 

 river between the two gaging stations. The daily corrected outflow^ 

 (outflow ± change in storage) is given in column B. If the natural 

 losses in the area varied in direct proportion to the transpiration 

 recorded at well D, the figures in column C represent these losses in 

 second-feet. Then hy adding columns B and C, the daily inflow is 

 determined. 



Likewise, columns D and E represent the natural losses in the area 

 if evaporation and temperature, respectively, are taken as indicators 



