SLCESPCO
National Weather Service
Colorado Basin River Forecast Center
Salt Lake City, Utah
May 2, 2018

San Juan Basin Special Forecast Group

May final Forecasts

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


Rio Blanco  FORECAST                   OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    16.7    23.0    29.0        7.7  


Navajo-Chromo  FORECAST                OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    22.0    28.0    37.0        7.6  


Little Navajo-Chromo  FORECAST         OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul     1.5     2.3     4.0        0.9  
       May     0.5     1.0     2.1
       Jun     0.1     0.3     0.5
       Jul     0.0     0.1     0.5


Vallecito Reservoir  FORECAST          OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    46.0    60.0    85.0       14.9  
       May    19.0    25.0    35.0
       Jun     8.0    13.0    20.0
       Jul     4.0     7.0    15.0


Navajo Reservoir  FORECAST             OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   147.0   200.0   280.0       70.0  
       May    65.0    92.0   135.0
       Jun     5.0    23.0    50.0
       Jul     7.0    15.0    25.0


Animas-Durango  FORECAST               OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    83.0   115.0   180.0       16.1  
       May    35.0    45.0    62.0
       Jun    23.0    39.0    64.0
       Jul     9.0    15.0    38.0


Lemon Reservoir  FORECAST              OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul     8.1    12.1    17.1        3.1  
       May     3.0     5.0     7.0
       Jun     2.0     3.0     4.0
       Jul     0.0     1.0     3.0