SLCESPCO
National Weather Service
Colorado Basin River Forecast Center
Salt Lake City, Utah
May 16, 2023

San Juan Basin Special Forecast Group

May mid-month Forecasts

Seasonal and Monthly forecasts
Forecast volumes in thousands of acre-feet (KAF)


Vallecito Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   235.0   270.0   305.0       36.0  
       May   103.0   120.0   130.0
       Jun    77.0    87.0    98.0
       Jul    19.0    27.0    41.0


Navajo Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   905.0  1010.0  1160.0      245.0  
       May   423.0   470.0   505.0
       Jun   215.0   245.0   300.0
       Jul    22.0    50.0   110.0


Animas-Durango  FORECAST                   OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   530.0   590.0   675.0       61.0  
       May   210.0   240.0   260.0
       Jun   200.0   215.0   240.0
       Jul    59.0    74.0   114.0


Lemon Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    67.0    76.0    88.0        7.4  
       May    30.0    33.0    36.0
       Jun    25.0    30.0    34.0
       Jul     4.6     5.6    11.0