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<br /> 33
<br /> Canal Headgate Surplus or
<br /> Year. Total S!m2.l.:i Requirement Shori2fL~
<br /> (acre-feet) (acre-feet)
<br />"
<br /> 1947 36,200 20,700 15,500
<br /> 1948 34,100 26,200 7,900
<br /> 1949 35,500 20,500 15,000
<br /> 1950 33,200 22,100 11,100
<br /> 1951 31,000 18,500 12,500
<br />, 1952 36,200 24,200 12,000
<br /> 1953 39,200 23,600 15,600
<br /> 1954 41,000 26,200 14,800
<br />.' 1955 37,600 23,100 14,500
<br /> 1956 42,300 24,100 18,200
<br /> 1957 32,700 19,200 13,500
<br /> 1958 32,800 21,000 11 , 800
<br /> 1959 31,600 20,100 11,500
<br /> 1960 38,900 23,600 15,300
<br /> 1961 25,800 16,000 9,800
<br /> lIver age 35,210 21 ,940 13,270
<br />
<br />,
<br />
<br />The computed surplus is very likelymo great considering soil types and
<br />the kind of crops produced. V/hile an irrigation efficiency of 60 percent
<br />could be obtained by improved irrigation methods, the cost of such improve-
<br />ments to attain 60 percent efficiency may not be economically practical at
<br />this time. The amount of surplus water indicates the average historical
<br />irrigation efficiency during the 15-year period was about 35 percent.
<br />
<br />~
<br />
<br />It is interesting to note that the average annual estimated surplus
<br />(13,270 acre-feet) is approximately the same as the average annual amount
<br />of groundwater pumped (13,390 acre-feet).
<br />
<br />The following table shows a comparison of the average monthly surplus
<br />water and the average monthly amount of groundwater pumped,
<br />
<br />Comparison of Surplus Water and Pumped Water
<br />
<br />Surplus wtr.
<br />Pumped wtr.
<br />
<br />MdT
<br />20
<br />o
<br />
<br />Apr
<br />-167
<br />o
<br />
<br />May
<br />1,593
<br /><)47
<br />
<br />Jun
<br />1,727
<br />1,460
<br />
<br />Jul
<br />2,287
<br />2,953
<br />
<br />Aug
<br />3,400
<br />3,887
<br />
<br />Sep
<br />2,867
<br />2,687
<br />
<br />Oct
<br />1,540
<br />1,460
<br />
<br />Yr
<br />13,267
<br />13,394
<br />
<br />Additional data for the Farmers Independent Ditch can be found in
<br />Volume II, Appendix B of Water District 2 Water Utilization Study. See
<br />Table of Contents of Appendices at front of this report.
<br />
<br />.
<br />
<br />"
<br />
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