SLCESPCO
National Weather Service
Colorado Basin River Forecast Center
Salt Lake City, Utah
July 18, 2022

San Juan Basin Special Forecast Group

July mid-month Forecasts

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


Rio Blanco  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul    32.0    33.0    35.0        9.6    16.2     4.6  


Navajo-Chromo  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul    37.0    39.0    40.0        9.4    19.2     6.5  


Little Navajo-Chromo  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul     2.8     2.9     3.0        1.4     1.2     0.3  
       Jul     0.0    0.15     0.2
       Aug     0.0     0.1     0.4
       Sep     0.0     0.1     0.4


Vallecito Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul   122.0   123.0   126.0       27.0    53.0    26.0  
       Jul    16.0    17.0    20.0
       Aug     7.0    10.0    20.0
       Sep     5.5     9.0    23.0


Navajo Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul   359.0   362.0   372.0      123.0   167.0    47.0  
       Jul    22.0    25.0    35.0
       Aug     3.0    16.0    40.0
       Sep    19.0    25.0    65.0


Animas-Durango  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul   228.0   229.0   235.0       35.0   112.0    54.0  
       Jul    27.0    28.0    34.0
       Aug    13.0    17.0    31.0
       Sep    11.0    18.0    35.0


Lemon Reservoir  FORECAST                   OBSERVED
              90%     50%     10%        Apr     May     Jun 
   Apr-Jul    31.0    31.3    32.3        5.4    16.2     5.2  
       Jul     4.2     4.5     5.5
       Aug     1.6     2.5     5.5
       Sep     1.0     2.0     6.5