Precipitation in April 2008 was 40% of average. The seasonal precipitation is 90% of average. Snow pack decreased from 110% of average on April 1st to 80% of average on May 1st. The runoff forecasts for April-July 2008 range from 78% to 96% of average. This reflects a drop over last month's forecasts resulting from another drop in average snowpack throughout the Sevier River Basin. The runoff forecasts for May-July 2008 range from 75% to 93% of average.

Differences between the full period forecasts and the residual forecasts may not exactly equal the actual observed volumes due to rounding conventions (see Definitions section).