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: 06/15/2025 1556Z
Data ending: 06/15/2025 12Z
* All units are in thousands of acre-feet.

Station: KLAO3 (Upper Klamath Falls - Inflow)

MONTHLY DATA

October    Obs:   50.3  Mean:   67.4  WY-to-date: Obs:   50.3 Mean:   67.4
2024       % of mean:    75% 

November   Obs:  108.6  Mean:   93.3  WY-to-date: Obs:  158.9 Mean:  160.7
2024       % of mean:    116% 

December   Obs:  150.0  Mean:  122.1  WY-to-date: Obs:  308.9 Mean:  282.8
2024       % of mean:    123% 

January    Obs:  131.4  Mean:  135.6  WY-to-date: Obs:  440.3 Mean:  418.4
2025       % of mean:    97% 

February   Obs:  148.8  Mean:  130.6  WY-to-date: Obs:  589.1 Mean:  547.8
2025       % of mean:    114% 

March      Obs:  231.9  Mean:  165.1  WY-to-date: Obs:  820.9 Mean:  712.9
2025       % of mean:    140% 

April      Obs:  244.7  Mean:  155.7  WY-to-date: Obs: 1065.7 Mean:  868.6
2025       % of mean:    157% 

May        Obs:  139.6  Mean:  130.8  WY-to-date: Obs: 1205.3 Mean:  999.4
2025       % of mean:    107% 

June       Obs (thru 15@12Z):   19.2    Mean:   72.5  WY-to-date: Obs: 1224.5 Mean: 1046.1
2025       Prob. level:      90    75    50    25    10
           Fcst Residual:    19    19    19    20    22
           Obs + Fcst:       38    38    39    40    41
           % of mean:                    53% 

July       Mean:   24.7
2025       Prob. level:      90    75    50    25    10
           Forecast:          2     2     4     6     9
           % of mean:                    15% 

August     Mean:   18.6
2025       Prob. level:      90    75    50    25    10
           Forecast:         -2    -2    -1     1     6
           % of mean:                    -3% 

September  Mean:   40.1
2025       Prob. level:      90    75    50    25    10
           Forecast:         20    21    23    25    31
           % of mean:                    57% 

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

Water Year Obs-To-Date: 1224.5    Mean: 1156.5
WY2025     Prob. level:      90    75    50    25    10
           Fcst Residual:    39    42    47    53    62
           Obs + Fcst:     1263  1267  1271  1278  1287
           % of mean:                   110%