National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

Raw ESP Water Supply Forecast

*CAUTION: Data below is raw model output and has not been reviewed
*         by a hydrologist.

Issued:      02/26/2026 1753Z
Data ending: 02/26/2026 12Z
* All units are in thousands of acre-feet.

Station: FOLC1 (American - Folsom Reservoir)

MONTHLY DATA

April      Mean:  447.5
2026       Prob. level:      90    75    50    25    10
           Forecast:        207   276   378   478   721
           % of mean:                    85% 

May        Mean:  444.3
2026       Prob. level:      90    75    50    25    10
           Forecast:        124   171   239   479   613
           % of mean:                    54% 

June       Mean:  235.0
2026       Prob. level:      90    75    50    25    10
           Forecast:         41    47    68   139   229
           % of mean:                    29% 

July       Mean:   60.8
2026       Prob. level:      90    75    50    25    10
           Forecast:          4     6    13    27    43
           % of mean:                    21% 

-------------------------------------------------------

Seasonal Mean: 1187.7
           Prob. level:      90    75    50    25    10
           Forecast:        404   522   710  1139  1519
           % of mean:                    60%