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: HLLC1 (Hell Hole Res. (usfs) - )

MONTHLY DATA

October    Obs:    0.3  Mean:    4.0  WY-to-date: Obs:    0.3 Mean:    4.0
2024       % of mean:    8% 

November   Obs:    2.8  Mean:   11.2  WY-to-date: Obs:    3.2 Mean:   15.1
2024       % of mean:    25% 

December   Obs:   15.1  Mean:   20.6  WY-to-date: Obs:   18.2 Mean:   35.8
2024       % of mean:    73% 

January    Obs:    8.2  Mean:   22.1  WY-to-date: Obs:   26.4 Mean:   57.8
2025       % of mean:    37% 

February   Obs:   44.6  Mean:   23.3  WY-to-date: Obs:   71.0 Mean:   81.0
2025       % of mean:    191% 

March      Obs:   27.2  Mean:   32.8  WY-to-date: Obs:   98.2 Mean:  113.8
2025       % of mean:    83% 

April      Obs:   56.0  Mean:   51.2  WY-to-date: Obs:  154.1 Mean:  165.0
2025       % of mean:    109% 

May        Obs:   69.5  Mean:   76.1  WY-to-date: Obs:  223.6 Mean:  241.1
2025       % of mean:    91% 

June       Obs (thru 07@12Z):   11.9    Mean:   49.4  WY-to-date: Obs:  235.6 Mean:  257.7
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:    12    12    13    14    14
           Obs + Fcst:       24    24    25    25    26
           % of mean:                    50% 

July       Mean:   13.8
2025       Prob. level:      90    75    50    25    10
           Forecast:          4     4     4     4     5
           % of mean:                    30% 

August     Mean:    2.3
2025       Prob. level:      90    75    50    25    10
           Forecast:          2     2     2     2     2
           % of mean:                    73% 

September  Mean:    1.5
2025       Prob. level:      90    75    50    25    10
           Forecast:          1     1     1     2     3
           % of mean:                    74% 

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

Water Year Obs-To-Date:  235.6    Mean:  308.3
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    19    20    21    21    23
           Obs + Fcst:      255   255   256   257   258
           % of mean:                    83%