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<br />- <br /> <br />. <br /> <br />Table 2-2 <br />Summary of Projected Normal Year Water Depletions in the <br />Colorado River Basin' <br />(1,000 acre-feet) <br /> <br /><:) 2000 2005 2010 2015 <br />0 Upper Basin2 <br />N 3,935 4,103 4,270 4,380 <br />c.o <br /> Lower Basin' 7,500 7,500 7,500 7,500 <br /> Total 11,435 11,603 11,770 11 ,880 <br /> <br />Existing Salinity Conditions, <br /> <br />. <br /> <br />The goal of the Colorado River Basin Salinity Control Program is to maintain the flow- <br />weighted average annual salinity at or below the numeric criteria, The effort is not intended to <br />counteract the salinity fluctuations that are a result of the highly variable flows caused by short-term <br />climatic variations in temperature, precipitation, and snowmelt. Therefore, to evaluate the <br />effectiveness of the Colorado River Basin Salinity Control Program, salinity data were analyzed and <br />adjusted by removing the effects of these variations to better understand program effectiveness under <br />long-term mean water'supply conditions, <br /> <br />. <br /> <br />This adjusted data was used to evaluate whether current salinity control efforts are sufficient <br />to meet the numeric criteria of the salinity standards under the current and projected levels of water <br />development in the Basin, Table 2-3 compares the numeric criteria with the observed data and <br />adjusted salinity levels at the three Lower Basin monitoring stations, <br /> <br />Figures 2-4, 2-5 and 2-6 summarize data from past Reclamation progress reports., comparing <br />the adjusted salinity (to reflect long-term mean water supply) to the numeric criteria, <br /> <br />ISource: Depletion projections prepared by Basin States for CRSS salinity simulations (Oct. 1995), <br /> <br />. <br /> <br />2Depletions at point of use, Data do not include Colorado River Storage Project reservoir evaporation <br />estimated by Reclamation to average 520,000 acre-feet per year under full development. <br /> <br />6 <br /> <br />'Lower Colorado River mainstem only, Diversions from the mainstem less returns, Data do not include <br />mainstem reservoir evaporation and stream losses, <br /> <br />. <br /> <br />.Oualitv of Water. Colorado River Basin. Pro~ress Reoort,'No, 1 through 19, <br /> <br />2-7 <br /> <br />. <br /> <br />;, <br />