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CALAVERAS RIVER - NEW HOGAN RESERVOIR (NHGC1)
Latitude:
38.16º N		Longitude:
120.81º W		Elevation:
554 Feet
Location: Calaveras County in CA
River Group: San Joaquin
Issuance Time: Jun 02 2025 at 8:07 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 Accumulated Volume PlotCSV Ensemble Files (Data in kcfs):  Forecast Group  |  NHGC1
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 menuCALAVERAS - NEW HOGAN DAM (NHGC1) 06/02/2025​Median Forecast: 81.6 kaf | 48% of Mean | 100% of MedianCreated: 06/02/2025 at 08:07 AM PDT171 kaf​Mean​171 kaf​Mean171 kaf​Mean​171 kaf​Mean81.6 kaf​Median​81.6 kaf​Median81.6 kaf​Median​81.6 kaf​Median565 kaf​Record High (1983)​565 kaf​Record High (1983)565 kaf​Record High (1983)​565 kaf​Record High (1983)7.50 kaf​Record Low (1977)​7.50 kaf​Record Low (1977)7.50 kaf​Record Low (1977)​7.50 kaf​Record Low (1977)Feb 14, 2025​6.46 kaf​Feb 14, 2025​6.46 kaf90%: 81.4 kaf75%: 81.4 kaf50%: 81.6 kaf25%: 81.7 kaf10%: 82.0 kafMin Trace (2021: 81.4 kaf)Median Trace (1999: 81.6 kaf)Max Trace (1983: 82.7 kaf)Volume MedVolume MeanTraces (1980-2023)Record HighRecord LowAccum to Date MeanAccum to Date MedianAccum to Date ObsDaily ObsObs Peak Observed to Date Percent of Mean: 49% (80.9 kaf) Water Year to Date Mean: 167 kaf​ 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.00.511.522.533.544.555.566.577.510/01​202411/01​202412/01​202401/01​202502/01​202503/01​202504/01​202505/01​202506/01​202507/01​202508/01​202509/01​202509/30​202504080120160200240280320360400440480520560600
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Official 7 Day National Weather Service Forecast   (CAZ067)
Today: Sunny. Highs 81 to 91. Light winds becoming southwest up to 10 mph in the afternoon.

Tonight: Clear. Lows 55 to 63. 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 62.

Thursday: Sunny. Highs 80 to 90.

Thursday Night and Friday: Clear. Lows 57 to 63. Highs 80 to 93.

Friday Night: Mostly clear. Lows 59 to 65.

Saturday through Sunday: Clear. Highs 86 to 96. Lows 59 to 67.