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RUBICON RIVER - HELL HOLE RESERVOIR (HLLC1)
Latitude:
39.07º N
Longitude:
120.41º W
Elevation:
4850 Feet
Location: Placer County in CA
River Group: Lower Sacramento
Issuance Time: Jun 05 2025 at 8:09 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.
4x5-Day Probability Plot
Tabular 4 x 5-Day Streamflow Volume Data
Observed
Peak 1-Day Streamflow Volume:
(April 1 at 12 UTC to Current Date at 12 UTC)
  Observed
05/11/2025
3.5kaf
  

Forecast
Peak 1-Day Streamflow Volume:
(Current Date at 12 UTC to August 1 at 12 UTC)
10% (Max)
06/09/2025
1.5kaf
25%
06/06/2025
1.3kaf
50% (Prob)
06/06/2025
1.3kaf
75%
06/06/2025
1.3kaf
90% (Min)
06/06/2025
1.3kaf
Tabular 5-Day Volume Accumulations (1000s of Acre-Feet)
Probability06/05 to 06/1006/10 to 06/1506/15 to 06/2006/20 to 06/25
10%6.3 kaf4.3 kaf2.9 kaf1.8 kaf
25%5.9 kaf4.1 kaf2.6 kaf1.7 kaf
50%
(Median)
5.7 kaf3.9 kaf2.4 kaf1.7 kaf
75%5.6 kaf3.8 kaf2.4 kaf1.6 kaf
90%5.5 kaf3.7 kaf2.2 kaf1.6 kaf

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ069)
Today: Sunny. At higher elevations, a slight chance of showers and thunderstorms late in the afternoon. Highs 65 to 80 higher elevations and 76 to 86 lower elevations. Light winds becoming west up to 10 mph in the afternoon.

Tonight: Clear. Lows 45 to 60 higher elevations and 56 to 67 lower elevations. Prevailing west winds up to 10 mph in the evening becoming light.

Saturday: Sunny. At higher elevations, a slight chance of rain showers in the afternoon. Warmer. Highs 68 to 83 higher elevations and 79 to 89 lower elevations. Light winds becoming west up to 10 mph in the afternoon.

Saturday Night: Mostly clear. Lows 47 to 62 higher elevations and 59 to 69 lower elevations. Prevailing west winds up to 10 mph in the evening becoming light.

Sunday: Mostly sunny. Highs 70 to 85 higher elevations and 81 to 91 lower elevations. Light winds becoming west up to 10 mph in the afternoon.

Sunday Night: Mostly clear. Lows 51 to 66.

Monday: Sunny. Highs 73 to 88.

Monday Night through Thursday: Clear. Lows 49 to 64. Highs 71 to 86.