SLCESPCO
National Weather Service
Colorado Basin River Forecast Center
Salt Lake City, Utah
July 17, 2023

San Juan Basin Special Forecast Group

Mid-July Final Forecasts

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


Vallecito Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May   Jun
   Apr-Jul   251.0   253.0   256.0       36.0   119.0  75.0
       Jul    21.0    23.0    26.0
       Aug     9.5    13.0    23.0
       Sep     8.0    12.0    27.0 

Navajo Reservoir  FORECAST                   OBSERVED 
              90%     50%     10%        Apr     May   Jun
   Apr-Jul  1024.0  1027.0  1039.0      245.0   488.0  249.0
       Jul    42.0    45.0    57.0
       Aug     2.0    20.0    60.0
       Sep     7.0    25.0    79.0 

Animas-Durango  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May   Jun
   Apr-Jul   534.0   537.0   547.0       61.0   218.0 179.0      
       Jul    77.0    80.0    90.0
       Aug    28.0    34.0    55.0
       Sep    19.0    29.0    49.0

Lemon Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May   Jun
   Apr-Jul    67.0    67.5    69.0        7.4    32.0  23.0
       Jul     4.6     5.1     6.6
       Aug     2.0     3.0     6.0
       Sep     1.5     3.0     8.0