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

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

Raw ESP Water Supply Forecast

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

Program run: 06/16/2025 1408Z
Data ending: 06/16/2025 12Z
* All units are in thousands of acre-feet.

Station: DLTC1 (Sacramento - Delta)

MONTHLY DATA

October    Obs:   13.4  Mean:   18.1  WY-to-date: Obs:   13.4 Mean:   18.1
2024       % of mean:    74% 

November   Obs:   59.6  Mean:   33.0  WY-to-date: Obs:   73.0 Mean:   51.1
2024       % of mean:    180% 

December   Obs:  158.3  Mean:   78.5  WY-to-date: Obs:  231.3 Mean:  129.6
2024       % of mean:    202% 

January    Obs:  104.3  Mean:  110.7  WY-to-date: Obs:  335.5 Mean:  240.3
2025       % of mean:    94% 

February   Obs:  195.5  Mean:  126.2  WY-to-date: Obs:  531.1 Mean:  365.3
2025       % of mean:    155% 

March      Obs:  165.5  Mean:  151.3  WY-to-date: Obs:  696.5 Mean:  516.6
2025       % of mean:    109% 

April      Obs:  134.6  Mean:  117.3  WY-to-date: Obs:  831.1 Mean:  633.9
2025       % of mean:    115% 

May        Obs:   79.7  Mean:  100.7  WY-to-date: Obs:  910.8 Mean:  734.6
2025       % of mean:    79% 

June       Obs (thru 16@12Z):   18.9    Mean:   51.1  WY-to-date: Obs:  929.8 Mean:  768.8
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:    12    12    12    12    12
           Obs + Fcst:       31    31    31    31    31
           % of mean:                    60% 

July       Mean:   22.1
2025       Prob. level:      90    75    50    25    10
           Forecast:         20    20    20    20    20
           % of mean:                    90% 

August     Mean:   15.0
2025       Prob. level:      90    75    50    25    10
           Forecast:         16    16    16    16    16
           % of mean:                   104% 

September  Mean:   13.4
2025       Prob. level:      90    75    50    25    10
           Forecast:         13    13    13    14    14
           % of mean:                    99% 

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

Water Year Obs-To-Date:  929.8    Mean:  837.5
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    60    60    61    61    62
           Obs + Fcst:      990   990   990   991   992
           % of mean:                   118%