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: 06/07/2025 1602Z
Data ending: 06/07/2025 12Z
* All units are in thousands of acre-feet.

Station: YREC1 (Shasta - Yreka, Nr)

MONTHLY DATA

October    Obs:    7.3  Mean:    8.6  WY-to-date: Obs:    7.3 Mean:    8.6
2024       % of mean:    85% 

November   Obs:   12.0  Mean:   10.9  WY-to-date: Obs:   19.2 Mean:   19.5
2024       % of mean:    110% 

December   Obs:   18.1  Mean:   15.0  WY-to-date: Obs:   37.3 Mean:   34.5
2024       % of mean:    120% 

January    Obs:   17.9  Mean:   18.1  WY-to-date: Obs:   55.3 Mean:   52.7
2025       % of mean:    99% 

February   Obs:   38.9  Mean:   17.4  WY-to-date: Obs:   94.1 Mean:   69.9
2025       % of mean:    224% 

March      Obs:   26.1  Mean:   18.0  WY-to-date: Obs:  120.2 Mean:   87.8
2025       % of mean:    145% 

April      Obs:   19.4  Mean:   10.5  WY-to-date: Obs:  139.7 Mean:   98.4
2025       % of mean:    185% 

May        Obs:   13.4  Mean:    8.2  WY-to-date: Obs:  153.1 Mean:  106.6
2025       % of mean:    163% 

June       Obs (thru 07@12Z):    2.3    Mean:    5.6  WY-to-date: Obs:  155.4 Mean:  108.5
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:     4     5     5     6     8
           Obs + Fcst:        7     7     8     8    10
           % of mean:                   137% 

July       Mean:    2.8
2025       Prob. level:      90    75    50    25    10
           Forecast:          3     3     4     4     4
           % of mean:                   130% 

August     Mean:    2.2
2025       Prob. level:      90    75    50    25    10
           Forecast:          3     4     4     4     4
           % of mean:                   166% 

September  Mean:    3.7
2025       Prob. level:      90    75    50    25    10
           Forecast:          5     5     5     6     6
           % of mean:                   146% 

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

Water Year Obs-To-Date:  155.4    Mean:  121.0
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    16    17    18    19    22
           Obs + Fcst:      171   172   173   175   177
           % of mean:                   143%