|
<br /> 26
<br />Canal losses (acre-feet)
<br /> Apr May Jun Jul Aug Sep Oct Year
<br />Max. 300 1,600 2,000 1,600 1,100 900 800 8,300
<br />Min. 0 500 2,000 1,600 1,100 200 0 6,900
<br />Ave. 160 1,500 2,000 1,600 1,100 840 673 7,873'
<br />Percent lost
<br />Max. 100 100 67 70 44 100 100 43
<br />Min. 21 26 22 17 12 16 22 25
<br />Ave. 78 59 40 31 23 34 59 32
<br />
<br />Farm delivery (acre-feet)
<br />Max. 1,100 4,600
<br />Min. 0 0
<br />Ave. 253 1,647
<br />
<br />7,300
<br />1,000
<br />3,553
<br />
<br />7,600
<br />700
<br />4,327
<br />
<br />7,900
<br />1,400
<br />4,000
<br />
<br />1\,600
<br />o
<br />2,747
<br />
<br />2,800
<br />o
<br />987
<br />
<br />24,400
<br />10,400
<br />17 ,510
<br />
<br />During 9 of the 15 years the estimated delivery of surface water to the
<br />farm headgate ranged from 16,100 to 21,000 acre-feet annually.
<br />
<br />Estimated historica~undwater supply
<br />
<br />,
<br />
<br />The estimated amount of groundwater pumped under the canal system is
<br />shown in the following table.
<br />
<br />'.
<br />
<br /> Acre-feet Pumped
<br /> Apr May Jun Jul Aug Sep Oct Year
<br />Max. 100 1,200 2,000 3,900 5,200 3,700 2,500 18,600
<br />Min. 0 300 500 800 1,300 800 600 4,300
<br />Ave. 67 660 1,100 2,240 2,960 2,113 1,400 10,540
<br />
<br />The greatest amount of pumping, 18,600 acre-feet, occurred during 1954.
<br />A maximum of 5,200 acre-feet pumped during August 1954. During the 15-year
<br />period an ~verage of 36 percent of the irrigation water requirements were
<br />supplied by water pumped from the groundwater. During 1952 pumps supplied
<br />52 percent of the irrigation water requirements.
<br />
<br />Estimated total historical water
<br />suppl v at farm heallil;l..t"'.
<br />
<br />The following table shows the combined supply of surface and ground-
<br />water estimated to have been used during the l5-year period.
<br />
<br />During 9 of the 15 years from 2.00 to 2.47 acre-feet per acre was used
<br />from the combined surface and groundwater sources.
<br />
|