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: 06/03/2025 1832Z
Data ending: 06/03/2025 12Z
* All units are in thousands of acre-feet.

Station: TCCC1 (Trinity - Coffee Ck, Ab)

MONTHLY DATA

October    Obs:    2.0  Mean:    4.1  WY-to-date: Obs:    2.0 Mean:    4.1
2024       % of mean:    48% 

November   Obs:    8.5  Mean:    8.9  WY-to-date: Obs:   10.4 Mean:   13.0
2024       % of mean:    95% 

December   Obs:   41.2  Mean:   18.7  WY-to-date: Obs:   51.6 Mean:   31.8
2024       % of mean:    220% 

January    Obs:   38.5  Mean:   24.7  WY-to-date: Obs:   90.1 Mean:   56.5
2025       % of mean:    155% 

February   Obs:   44.6  Mean:   30.3  WY-to-date: Obs:  134.7 Mean:   86.5
2025       % of mean:    147% 

March      Obs:   56.0  Mean:   43.3  WY-to-date: Obs:  190.7 Mean:  129.8
2025       % of mean:    129% 

April      Obs:   80.2  Mean:   52.5  WY-to-date: Obs:  270.9 Mean:  182.3
2025       % of mean:    153% 

May        Obs:   65.7  Mean:   60.4  WY-to-date: Obs:  336.6 Mean:  242.7
2025       % of mean:    109% 

June       Obs (thru 03@12Z):    4.0    Mean:   29.9  WY-to-date: Obs:  340.5 Mean:  247.7
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:    28    29    30    31    32
           Obs + Fcst:       32    33    34    35    36
           % of mean:                   113% 

July       Mean:    8.3
2025       Prob. level:      90    75    50    25    10
           Forecast:          6     6     6     7     9
           % of mean:                    75% 

August     Mean:    3.2
2025       Prob. level:      90    75    50    25    10
           Forecast:          2     2     2     3     3
           % of mean:                    77% 

September  Mean:    2.3
2025       Prob. level:      90    75    50    25    10
           Forecast:          2     2     2     2     2
           % of mean:                    86% 

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

Water Year Obs-To-Date:  340.5    Mean:  286.7
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    38    39    40    43    46
           Obs + Fcst:      379   380   381   383   387
           % of mean:                   133%