Report: Colorado basin river forecast
Early May water supply volume forecasts are below to much below normal throughout the Colorado River Basin and Great Basin. Upper Colorado River Basin water supply forecasts range between 15-75% of the 1981-2010 historical April-July average. Great Basin water supply forecasts are 10-70% of average. … Many April-July volume forecasts fall in the bottom (driest) five on record….The Lake Powell inflow forecast is 2.0 MAF (28% of average), a 17% decrease from April….