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TUOLUMNE RIVER - HETCH HETCHY RESERVOIR (HETC1)
Latitude:
37.95º N
Longitude:
119.79º W
Elevation:
3870 Feet
Location: Tuolumne County in CA
River Group: San Joaquin
Issuance Time: Jun 16 2025 at 6:29 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 Seasonal Trend Plot (Year View)Tabular View  |  Select a Different Water Year:  
Note: The chart below functions better in landscape orientation.

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ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ323)
Today: Breezy, sunny. Highs 54 to 66. Southwest winds 5 to 15 mph increasing to 10 to 25 mph in the afternoon. Gusts up to 50 mph.

Tonight: Colder, clear. Lows 29 to 41. Southwest winds 10 to 15 mph with gusts to around 45 mph shifting to the south with gusts to around 30 mph after midnight.

Saturday: Sunny. Highs 44 to 58. Southwest winds 5 to 15 mph with gusts to around 35 mph.

Saturday Night: Colder, clear. Lows 25 to 41. West winds 5 to 15 mph with gusts to around 30 mph shifting to the east 5 to 10 mph after midnight.

Sunday: Warmer, sunny. Highs 51 to 65. Southeast winds up to 10 mph shifting to the southwest in the afternoon.

Sunday Night through Tuesday Night: Mostly clear. Lows 31 to 52. Highs 55 to 72.

Wednesday through Thursday: Clear. Highs 62 to 79. Lows 41 to 55.