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<br />TAHLE IV-2 WATER BUDGET ~OR ONFARM IRRIGATION
<br />Mc ELMO CREEK SALINITY CONTROL STUDY, COLORADO
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<br />ITEM PRESENT 1/3tLTERNATIVE PLAN NUMHER
<br /> 1-- 2 3 4 5 6
<br /> ------- ------ac. tt./yr.---------------
<br />Irrigation Supply 107,000 121,000 90,00e 84,000 85,00e 85,000 114,000
<br />Group Ditch Seepage 2,OUO 3,00U 3,OUU U l l 0
<br />Farm Velivery 105,OOU l1l:l,OOl l:l7,OOU l:l4,00U 85,OUU 85,OUU 114,OOU
<br />Onfarm Ditch Seepage 2/ 4,000 4,00l 4,000 1,000 l,UUO 1,0Ol 0
<br />Seasonal Gross App. 101,UOO 114,OOl 83,000 83,000 84,OUO 84 , uoe 114,000
<br />Seasonal Net App. 1/ 47,OOU 54,OUO 54,00U 54,UOU 54,UUO 54,OUO 54,000
<br />Seasonal Deep Perc~ 2/ 9,000 IlJ ,OOl 7,000 7,000 7,000 7,000 10 ,000
<br />Seasonal Runoff 2/ - 26,000
<br /> 45,000 51,UOO 25,000 20,UOO 15,OUO 51,OUO
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<br />Adequacy of Irrigation l:l7% 100% 1007. 100% 100% 10U% 100%
<br />Efficiency of Irrigation 45% 45% 6U% 64% 64% 64% 47%
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<br />!/ Under present conditons the Hontezuma Valley Irrigation Company
<br />experiences about a 13 percent shortage in its annual irrigation
<br />requirements, ususally in late summer. The annual shortage wiLl be
<br />alleviated with completion of the Dolores proj ect by the Ilureau of
<br />Reclamation.
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<br />3../ Consumptive use by phreatophytic vegetation has not been separately
<br />evaluated, however, it is recognized that runoff, deep percolation and ditch
<br />seepage are primary sources of water for such vegetation, therefore, not all
<br />of the runoff and seepage water indicated here will drain from the valley.
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<br />3/ Under Plan One seepage reductions are insignificant when rounding numbers
<br />to closest I,UOO.
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