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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 />I <br />I <br /> <br /> Table 4. <br />CLOUD SEEDING PROJECT AREA ESTIMATED INCREASED RUNOFF <br /> Average Increase in Increase in Runoff Increased <br />Project Areas Annual Runoff April 1 SWC* Runoff** Factor*** Runoff <br /> ( acre-feet) (percent) (percent) (oercent) ( acre-feet) <br />Cache County 424,000 18.0 12.4 22.32 94,600 <br />West Box Elder 57,800 18.0 11.8 21.24 12,300 <br />Tooele County 43,300 20.0 11.3 22.60 9,800 <br />Sevier River 653,000 7.0 14.4 10.08 65,800 <br />Cedar-Beaver 135,000 7.0 12.9 9.03 12,200 <br />West Colorado 411,500 7.0 13.9 9.73 40,000 <br />Virgin River 192,400 7.0 11.0 7.70 14,800 <br />Total 1,917,000 249,600 <br />Northern Utah <br />Project 481,800 106,900 <br />Central and <br />Southern Utah <br />Project 1,435,200 142,600 <br />"April 1 snow water content. <br />""Increase in annual runoff for a 10% increase in April 1 SWC. <br />"""Runoff Factor (percent) equals increase in April 1 SWC times increase in runoff for a 10 pHrcent increase in <br />Aoril1 SWC divided by 10. <br /> <br /> Table 5. <br />INCREASED RUNOFF AND COST FOR THE CLOUD SEEDING PROJECTS <br /> Increased Runoff Cost Cost <br />Project (acre-feet) ($) ($/acre-foot) <br />Northern Utah 106,900 8~r,800 0.82 <br />Central and Southern Utah 142,652 166,500 1.17 <br />Total 249,600 254,300 1.02 <br /> <br />of the state compared to the control stations. If data were available to include these two <br />factors, the cost per acre-foot would be less. <br /> <br />-9- <br />