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MIDDLE FORK COSUMNES RIVER - SOMERSET (SOSC1)
Latitude:
38.62º N		Longitude:
120.70º W		Elevation:
1821 Feet
Location: El Dorado County in CA
River Group: San Joaquin
Issuance Time: Jun 02 2025 at 8:06 AM PDT
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Flow data on this product are unregulated / full natural flow.
2025 Water Year Trend Plot
Tabular View  |  Select a Different Water Year:  
Note: The chart below functions better in landscape orientation.
Created with Highcharts 9.2.1Daily Observed Volumes​(1000s Ac-Ft)Water Year 2025 - Day (mm/dd)Water Year Volumes (1000s Ac-​Ft)Chart context menuMF COSUMNES - SOMERSET, NR (SOSC1) 06/02/2025​Median Forecast: 85.4 kafCreated: 06/02/2025 at 08:06 AM PDTFeb 15​2.35 kaf​Feb 15​2.35 kafRecord Low: ​23.9 kaf in 1961​Record Low: ​23.9 kaf in 1961Record Low: ​23.9 kaf in 1961​Record Low: ​23.9 kaf in 1961Record High: ​402 kaf in 2017​Record High: ​402 kaf in 2017Record High: ​402 kaf in 2017​Record High: ​402 kaf in 2017WY Volume MeanWY Volume MedianWY to Date ObsWY to Date MeanWY to Date MedianDaily ObsObs PeakWY Vol Fcst 50%WY Vol Fcst 25/75%WY Vol Fcst 10/90%WY Vol Fcst Max/MinRecord LowRecord HighSnow Model Updates Observed to Date Percent of Mean: MM (75.1 kaf) Water Year to Date Mean: MM kaf​ Historical Water Year Vol Max: 402 kaf in 2017 Historical Water Year Vol Min: 23.9 kaf in 1961​ This product only considers meteorological uncertainty and does not account for hydrologic uncertainty.​ Means/medians are based on the period of Water Years 1980 through 2023.​ Legend entries below can be toggled on/off.00.250.50.7511.251.51.7522.252.52.75310/01​202411/01​202412/01​202401/01​202502/01​202503/01​202504/01​202505/01​202506/01​202507/01​202508/01​202509/01​202509/30​202504080120160200240280320360400440480

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ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ067)
Tonight: Clear. Lows 53 to 61. Prevailing west winds up to 10 mph in the evening becoming light.

Tuesday: Sunny. Highs 80 to 90. Prevailing west winds up to 10 mph.

Tuesday Night: Clear. Lows 55 to 63. Prevailing west winds up to 10 mph in the evening becoming light.

Wednesday: Sunny. Highs 80 to 92. Light winds becoming southwest up to 10 mph in the afternoon.

Wednesday Night: Clear. Lows 56 to 64. Prevailing west winds up to 10 mph in the evening becoming light.

Thursday: Sunny. Highs 80 to 90.

Thursday Night: Clear. Lows 56 to 64.

Friday through Saturday: Clear. Highs 82 to 95. Lows 56 to 65.

Saturday Night: Mostly clear. Lows 61 to 67.

Sunday: Sunny. Highs 86 to 96.

Sunday Night: Mostly clear. Lows 59 to 67.

Monday: Sunny. Highs 86 to 96.