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: CHSO3 (Sprague - Chiloquin, Nr)

MONTHLY DATA

October    Obs:   12.2  Mean:   15.9  WY-to-date: Obs:   12.2 Mean:   15.9
2024       % of mean:    77% 

November   Obs:   17.1  Mean:   18.5  WY-to-date: Obs:   29.3 Mean:   34.4
2024       % of mean:    92% 

December   Obs:   29.2  Mean:   25.3  WY-to-date: Obs:   58.5 Mean:   59.7
2024       % of mean:    115% 

January    Obs:   78.8  Mean:   33.4  WY-to-date: Obs:  137.3 Mean:   93.1
2025       % of mean:    236% 

February   Obs:   34.4  Mean:   39.5  WY-to-date: Obs:  171.7 Mean:  132.3
2025       % of mean:    87% 

March      Obs:  148.4  Mean:   60.6  WY-to-date: Obs:  320.1 Mean:  192.9
2025       % of mean:    245% 

April      Obs:  192.8  Mean:   66.6  WY-to-date: Obs:  512.9 Mean:  259.5
2025       % of mean:    289% 

May        Obs:  103.5  Mean:   63.0  WY-to-date: Obs:  616.4 Mean:  322.5
2025       % of mean:    164% 

June       Obs (thru 16@12Z):   17.3    Mean:   31.5  WY-to-date: Obs:  633.7 Mean:  343.6
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:    12    12    12    13    13
           Obs + Fcst:       30    30    30    30    30
           % of mean:                    95% 

July       Mean:   14.0
2025       Prob. level:      90    75    50    25    10
           Forecast:         18    19    19    19    20
           % of mean:                   134% 

August     Mean:   10.2
2025       Prob. level:      90    75    50    25    10
           Forecast:         14    14    14    15    15
           % of mean:                   137% 

September  Mean:   11.8
2025       Prob. level:      90    75    50    25    10
           Forecast:         14    15    15    16    17
           % of mean:                   128% 

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

Water Year Obs-To-Date:  633.7    Mean:  390.4
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    59    59    60    61    63
           Obs + Fcst:      692   693   694   695   697
           % of mean:                   178%