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<br />Table ES-4 Potential Quantities of Water Availablefor Transfer Based Upon Levels of
<br />Participation and Implementation
<br />
<br /> Percent Land Acreage Participation'
<br /> 0% (AF) 20% (AF) 40% (AF) 60% (AF) 80% (AF) 100% (AF)
<br />Percent 0% (AF) 0 56,640 113,280 169,920 226,560 283,200
<br />Implementation 20% (AF) 24,520 81, 160 137,800 194,440 251,080 307,720
<br />of System 40% (AF) 49,040 105,680 162,320 218,960 275,600 332,240
<br />Improvements 60% (AF) 73,560 130,200 186,840 243,480 300,120 356,760
<br /> 80% (AF) 98,080 154,720 211,360 268,000 324,640 381,280
<br /> 100% (AF) 122,600 179,240 235,880 292,520 349,160 405,800
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<br />All FIgures are based on Lower 90% c.!. AgrIcultural Water Use of 5.0 Acre-Feet per Acre
<br />
<br />Additional water could also be made available through the use of land set-aside, or by modified
<br />irrigation programs.
<br />
<br />In 2032, lID will regain the use of the 106,110 acre-feet of water annually conserved by the
<br />IID/MWD program. In 2057, lID will also regain the use of 67,000 acre-feet of water annually
<br />conserved by the All-American Canal lining project. (On December 19, 1995, the lID Board of
<br />Directors elected not to extend the IID/MWD All-American Canal lining agreement beyond
<br />December 31, 1995.)
<br />
<br />Although most environmental impacts may be insignificant, there are potential environmental
<br />impacts associated with most of the conservation projects presented in Tables ES-2 and ES-3.
<br />Some of these, such as the Tailwater Return Systems, Lateral Interceptors, and Mid-Lateral and
<br />other Reservoirs, have been mentioned or evaluated in either the 1986 Draft Environmental ImDact
<br />ReDort Proposed Water Conservation Program and Initial Water Transfer Environmental Imvact
<br />ReDort (1986 Program EIR) or the 1994 Modified East Lowline and Trifolium InterceDtors. and
<br />Comvletion PrQiects EIR. These projects need to be evaluated based upon each of their individual
<br />potential impacts to water quality in the drains, rivers, and the Salton Sea. Their impacts on
<br />designated beneficial uses of these surface waters, as well as their impacts to aquatic and avian
<br />biology and habitats that are dependent upon these water also needs to be evaluated. Additionally,
<br />the cumulative effects of these projects should be evaluated. At a minimum, it appears as if a new
<br />
<br />Draft: Subject To Revision 1/3/96
<br />
<br />ES-6
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