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<br />un:CfS ON COl.ORAnO Rl\Tk <br />(dnnual av~r~tc) <br /> <br />Stream depletion (acre-feet) <br />Changes in salt load (tons) <br />Changes in salt concentration at Imperial <br />Dam (mg/L) <br />From concentrating effects of stream <br />depletion - an increase <br />From change in salt load - a decrease <br />Net increase in salinity levels <br /> <br />PROJECT COSTS <br />(January 19~rices. in millions) <br /> <br />Estimated construction cost <br />Estimated annual o?eration & <br />maintenance cost <br /> <br />$537.~ <br /> <br />3.6 <br /> <br />TO,AL BENEFIT-COST RATIO <br /> <br />Colorado <br /> <br />120,700 <br />-14,720 <br /> <br />14.5 <br />-1. 5 <br />13.0 <br /> <br />New <br />Mexico <br /> <br />34,100 <br />8,250 <br /> <br />4.1 <br />0.8 <br />4:9 <br /> <br />- <br /> <br />Total <br /> <br />15~,800 <br />-6,470 <br /> <br />18.6 <br />-0.7 <br />17.9 <br /> <br />PROJECT BE~~FITS <br />(in l:1i11ions) <br /> <br />Estimated total <br />benefits <br />(average annual) <br /> <br />1.6:1 <br /> <br />$36.5 <br />