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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />I <br />I <br /> <br />of fannable land within IID will still be in cultivation. If no additional water conservation <br />measures are implemented beyond existing programs, agricultural water use in 2045 will <br />continue to include approximately 71.8 percent crop consumptive use, 16.8 percent tailwater, and <br />11.4 percent leaching (percentages of water delivered for agriculture). Any further reductions in <br />agricultural water requirements based on projected agriculture land use patterns will be generated <br />by the development of alternative crops and cropping patterns, and the implementation of <br />improved irrigation technologies. Table IILD.l-2 delineates the projected agriculture water <br />requirement components in 2045. <br /> <br />Alternative on-fann water conservation methods and their potential to conserve water will be <br />addressed in Chapter IV. The development of alternative crops such as halophytes may not <br />reduce the actual water requirements, but would reduce the water requirement for Colorado River <br />water. Halophytes can thrive on extremely poor quality water (as much as 45,000 ppm total <br />dissolved solids). The development of a commercial market for halophytes could result in the <br />cultivation of these types of crops, which could be irrigated with drain water or even Salton Sea <br />water. This ultimately would have the impact of reducing the agriculture water requirement for <br />Colorado River water. This issue is addressed in Chapter V in more detail. <br /> <br />Table IILD.1-2 Projected Agricultural Water Requirement In 2045 <br /> <br />Projected <br />Farm <br />Acrei <br /> <br />Historical <br />Agriculture Water <br />Use Per Acre <br />(Acre-Feet/Acref <br />427,600 5.6 <br />I Source: See Chapter I1I.D <br />2 Source: See Table I1I.D.I-I, Upper 90% C.I. Agricultural Water Use of 5.6 Acre-Feet! Acre <br />3 Source: See Table I1I.C.l-l and III.C.I-2; Consumptive Use, Tailwater and Crop Leaching are determined as a <br />percentage of the projected total agricultural water use. <br /> <br />Projected Total <br />Agriculture Water <br />Requirement <br />(Acre-Feet) <br />2,394,600 <br /> <br />Projected Crop <br />Consumptive Use <br />Requirement <br />(Acre-Feetl <br />1,719,300 <br /> <br />Projected <br />Tailwater <br />3 <br />(Acre-Feet) <br /> <br />Projected Crop <br />Leaching <br />Requirement <br />(Acre-Feetl <br />273,000 <br /> <br />402,300 <br /> <br />IILD.2 Future Municipal & Industrial Water Requirements <br />M&I water requirement projections have been determined for the year 2045 and are presented in <br />Table IILD.2-1. The determination of the M&I water requirements are based on projected <br /> <br />Draft: Subject To Revision 12/21/95 <br /> <br />25 <br />