SLCESPCO
National Weather Service
Colorado Basin River Forecast Center
Salt Lake City, Utah
May 3, 2019

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    47.0    56.0    65.0       10.7  


Navajo-Chromo  FORECAST                OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    53.0    62.0    73.0       13.0  


Little Navajo-Chromo  FORECAST         OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul     6.0     8.0    10.0        1.7  
       May     3.0     4.0     5.0
       Jun     1.0     1.5     2.3
       Jul     0.3     0.5     1.0


Vallecito Reservoir  FORECAST          OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   215.0   255.0   305.0       35.0  
       May    70.0    83.0   100.0
       Jun    85.0   103.0   115.0
       Jul    25.0    34.0    55.0


Navajo Reservoir  FORECAST             OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   810.0   930.0  1060.0      230.0  
       May   295.0   345.0   380.0
       Jun   240.0   290.0   315.0
       Jul    45.0    65.0   135.0


Animas-Durango  FORECAST               OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul   460.0   535.0   685.0       78.0  
       May   176.0   190.0   230.0
       Jun   160.0   197.0   235.0
       Jul    46.0    70.0   142.0


Lemon Reservoir  FORECAST              OBSERVED
              90%     50%     10%        Apr 
   Apr-Jul    53.0    65.0    80.0        6.0  
       May    19.0    23.0    29.0
       Jun    23.0    29.0    34.0
       Jul     5.0     7.0    11.0