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The High Uinta Mountain region has been seeded for only 2 years no\\'. There are 20 cloud seeding generators in the project area. Target and control regression analyses indicates an average 5% increase in precipitation and an average 6% increase in April 1'1 snow water content. Table 2 shows a summary of the results for the project areas. Tabid. Summary of Cloud Seeding Project Areas Number of Cloud Precipitation April I Snow Seeding Generators Seeded Increase during WalerContenl Project Area 2003.2004 Season Years Seeding Period Increase Central/Southern Utah 62 27 15% 4% Tooele County 8 20 20% ]8% East Box Elder/Cache County 2J 16 16% 10% West Box Elder 10 12 SA 18% WeslemUintas 14 10 1.3% 2.3% lligh Uintas 20 2 5% 6% Annual Runorr Estimated from April 1" Snow \Vater Content April I st snow water content is often considered a predictor of the spring runoff 10 come. Because spring runoff is a large percentage of annual runolT. snow water content can also be a predictor of annual runoff. Regression equations were derived by relating annual runofT 10 April I Sl snow water content. The snow watcr content was then increascd by 10 pcrcent and thc equations were used to determine what the increase in annual runoff would bc. The 10 percent increase was chosen arbitrarily. It represents an easy reference to relate expecled increases in runolT and is in the expected range of increased April 1'1 snow water content due to cloud seeding. The actual increases in April IS! snow water content are used in the following analysis to estimate the incrcase in nmotT for each project area. Table 3 shows the gaged streamflow stations used for each projecl area. the correlated SNOTEL/snow course stations. the regression equation correlation coetlicients. and the percenl annual runolTincrease for a 10 percent increase in Aprillsl snow water con lent. 6