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<br />control analyses have also been made for April 1 snow ooter content. The April 1 snow <br />water content analyses are important because relationships can be developed to estimate <br />runoff based on April 1 snow ooter content. <br /> <br />The Central/Southern Utah project area has operated continuously since water year <br />1974, with the exception of the extremely wet period from 1984-87. The project has had <br />22 seeded seasons. The project area has 66 cloud seeding generators. Using a target <br />and control regression analysis for December through March precipitation, the Centrall <br />Southern Utah project area indicates a 14 percent average increase in precipitation for this <br />period. A similar analysis using April 1 snow water content shows an average increase of <br />7 percent. <br /> <br />Seeding began in the Tooele County project area in 1976 and continued through <br />the 1982 water year. Seedng resumed in 1989 through 1992 and again in 1996 to 1999. <br />The project area has had 15 seeded seasons. The project area has nine cloud seeding <br />generators. Target and control regression analyses show a December-March precipitation <br />average increase of 19 percent and an April 1 snow water content average increase of 20 <br />percent. <br /> <br />The East Box Elder/Cache County project area has operated 11 years beginning <br />in 1989. The project area has 22 cloud seeding generators. Target and control reg-ession <br />analyses shows a December.February precipitation average increase of 20 percent and <br />an April 1 snow water content average increase of 18 percent. <br /> <br />The West Box Elder project area operated for nine years from 1989 through 1997. <br />The project area has 12 cloud seeding generators. The target area has no precipitation <br />gages; however, there are two snow courses. A target and control regression analysis <br />shows an April 1 snow water content average increase of 18 percent. <br /> <br />-5- <br />