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

San Juan Basin Special Forecast Group

April mid-month Forecasts

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


Rio Blanco  FORECAST              
              90%     50%     10%    
   Apr-Jul    62.0    72.0    82.0     


Navajo-Chromo  FORECAST              
              90%     50%     10%    
   Apr-Jul    77.0    88.0   102.0     


Little Navajo-Chromo  FORECAST              
              90%     50%     10%    
   Apr-Jul     7.3     8.6    70.8     
       Apr     1.7     1.9     2.3
       May     3.5     4.0     4.8
       Jun     1.8     2.3     3.0


Vallecito Reservoir  FORECAST              
              90%     50%     10%    
   Apr-Jul   220.0   255.0   300.0     
       Apr    25.0    27.0    33.0
       May    82.0   100.0   110.0
       Jun    90.0   100.0   110.0


Navajo Reservoir  FORECAST              
              90%     50%     10%    
   Apr-Jul   850.0   985.0  1200.0     
       Apr   210.0   230.0   260.0
       May   350.0   400.0   450.0
       Jun   260.0   290.0   365.0


Animas-Durango  FORECAST              
              90%     50%     10%    
   Apr-Jul   520.0   590.0   715.0     
       Apr    45.0    50.0    60.0
       May   190.0   215.0   240.0
       Jun   220.0   240.0   295.0


Lemon Reservoir  FORECAST              
              90%     50%     10%    
   Apr-Jul    67.0    76.0    93.0     
       Apr     4.0     5.0     8.0
       May    27.0    31.0    34.0
       Jun    31.0    33.0    36.0