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<br />Table 1 <br />PRELIMINARY WATER AND SALT BUDGETS ON CRIR <br />Based on 1974 Data 1/ <br /> <br /> Water Salt <br />Component (Acre-feet) (Tons) <br />Inflow to Reservation <br />Headgate Diversions 635,730 677,815 <br />Pumped Diversions 13 , 036 13,899 <br />Subsurface Inflow From: <br />Colorado River 59,964 63,933 <br />Eastern Boundary 4,910 9,329 <br />Surface Inflow 7,400 14,060 <br />Rainfall 23,884 <br /> 744,924 779,036 <br />Outflow From Reservation <br />Surface Drains <br />Regulatory Waste 86,733 93,831 <br />Intercepted Ground Water 266,152 546,027 <br />Subsurface Outflow 2,500 7,750 <br /> 355,385 647,608 <br />Difference Between Inflow and <br />Outflow (Retention) 389,539 131,428 <br />Consumptive Use <br />Irrigated Crops (266,981) <br />Native Vegetation (110,739) <br />Evaporation <br />Canal and Laterals (3,940) <br />Onfarm (7,879) <br /> <br />1/ Estimated by Boyle Engineering Corporation. Covers irrigated <br />flood plain lands in Arizona. <br /> <br />13 <br />