<br />January
<br />February
<br />March
<br />Apri 1
<br />May
<br />June
<br />July
<br />August
<br />September
<br />October
<br />November
<br />[lee-ember
<br />
<br />Total
<br />
<br />21,600
<br />19,500
<br />21,100
<br />26,500
<br />66,400
<br />126,500
<br />83,800
<br />50,400
<br />29 ,000
<br />25,800
<br />24,000
<br />23,500
<br />518,100
<br />
<br />17,000
<br />14,500
<br />14,800
<br />9,700
<br />26,000
<br />41,200
<br />24,600
<br />18,000
<br />17,200
<br />14,300
<br />13,100
<br />14,600
<br />
<br />225,000
<br />
<br />117,200
<br />120,200
<br />244,200
<br />274,300
<br />227,100
<br />121,700
<br />1\ ,800
<br />
<br />
<br />001227
<br />
<br />1924-1966
<br />
<br />Month
<br />
<br />Average Flow
<br />at Canon City
<br />(acre-feet)
<br />
<br />Minimum Flow
<br />at Canon City
<br />(acre-feet)
<br />
<br />Headgate Water
<br />Requirements
<br />(acre-feet)
<br />
<br />1,116,500
<br />
<br />It is to be noted that the average annual full water supply
<br />requirements for the canals between Pueblo and the State line exceed
<br />1,116,000 acre feet. This total average growing season water requirement,
<br />less the estimated water pumped from wells and canal diversions during
<br />the growing season, indicates an average annual shortage of almost
<br />340,000 acre-feet from 1950 through 1966.
<br />The need for a balanced water supply and the readily-available
<br />e 1 ectr i c power in recent years have resu 1 ted in an expanded use of ground
<br />water from the alluvial aquifer. The U. S. Geological Survey estimates
<br />31,000 acre-feet and 227,000 acre-feet of water were pumped from wells
<br />during 1950 and 1964, respectively. The estimated pumpage from 1940
<br />through 1949 averaged 10,600 acre-feet per year; for 1950 through
<br />1959, it averaged 83,000 acre-feet per year; and for the 1960 through
<br />1964 period the average annual use had increased to 168,200 acre-feet.
<br />At present, there are more than 1,400 high-capacity wells under the
<br />ditches between Pueblo and the state line. These wells have an
<br />estimated pumping capacity of about ~770 cubic feet per second, or a
<br />theoretical pumping capability of about 106,000 acre-feet per month.
<br />The U,S. Geological Survey estimates 80% of the water pumped in the
<br />
<br />9
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