SLCESPCO National Weather Service Colorado Basin River Forecast Center Salt Lake City, Utah May 5, 2026 San Juan Basin Special Forecast Group May 2026 Final Forecasts Forecast volumes in thousands of acre-feet (KAF) Animas-Durango FORECAST OBSERVED 90% 50% 10% Apr Apr-Jul 120 153 220 32 May 46 63 86 June 30 41 70 July 12 17 32 Navajo Reservoir FORECAST OBSERVED 90% 50% 10% Apr Apr-Jul 123 168 255 73 May 62 90 116 June 2.0 14 54 July -14 -9.0 12 Vallecito Reservoir FORECAST OBSERVED 90% 50% 10% Apr Apr-Jul 64 80 107 21 May 27 36 42 June 11 16 32 July 5.0 7.0 12 Lemon Reservoir FORECAST OBSERVED 90% 50% 10% Apr Apr-Jul 13.0 19.5 26.5 4.5 May 5.5 9.0 11.0 June 2.0 4.0 7.0 July 1.0 2.0 4.0