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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: | May 13 2025 at 8:41 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. |
| Monthly Probability Plot |
| Monthly Streamflow Volume (1000s of Acre-Feet) Data Updated: May 13 2025 at 8:45 AM PDT | ||||||
| Prob | May* | Jun | Jul | Aug | Sep | Oct |
| 10% | 85.0 | 28.8 | 5.2 | 2.1 | 3.1 | 16.1 |
| 25% | 79.8 | 23.6 | 4.8 | 2.0 | 1.8 | 4.4 |
| 50% | 76.4 | 20.6 | 4.3 | 1.8 | 1.2 | 2.4 |
| 75% | 73.8 | 18.4 | 3.8 | 1.6 | 1.0 | 1.4 |
| 90% | 72.9 | 16.3 | 3.7 | 1.6 | 0.9 | 0.8 |
| Mean | 75.7 | 47.9 | 13.0 | 2.2 | 1.5 | 4.1 |
| %Mean | 100.9 | 43.0 | 33.1 | 81.8 | 80.0 | 58.5 |
| Prob | Nov | Dec | Jan | Feb | Mar | Apr |
| 10% | 34.2 | 67.5 | 41.3 | 55.8 | 62.7 | 75.5 |
| 25% | 14.9 | 22.2 | 27.1 | 26.3 | 39.3 | 63.0 |
| 50% | 5.4 | 8.1 | 11.7 | 14.9 | 30.3 | 53.1 |
| 75% | 2.0 | 3.3 | 5.1 | 7.2 | 18.9 | 39.2 |
| 90% | 1.4 | 1.2 | 2.4 | 4.1 | 12.9 | 32.4 |
| Mean | 11.6 | 21.9 | 20.5 | 23.4 | 33.3 | 52.8 |
| %Mean | 46.6 | 37.0 | 57.1 | 63.7 | 91.0 | 100.6 |
| Note 1: %Mean is the "Median forecast monthly value (50%)" divided by the "monthly mean" (displayed as a %) | ||||||
| Note 2: For current month, graphic represents remaining forecast only, text represents observed + remaining forecast. | ||||||
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ069) |
| Today: Mostly cloudy. At lower elevations, a chance of rain showers early in the morning. A slight chance of rain showers late in the morning, then a chance of rain showers in the afternoon. At higher elevations, a chance of snow showers early in the morning. A slight chance of rain and snow showers late in the morning, then a chance of rain showers early in the afternoon. Heavy snow showers likely in the afternoon. Rain showers likely late in the afternoon. Highs 34 to 49 higher elevations and 48 to 58 lower elevations. No snow accumulation lower elevations and 3 to 5 inches higher elevations. Snow level 5500 feet increasing to 6500 feet in the afternoon. Light winds becoming west up to 10 mph in the afternoon. Tonight: Partly cloudy in the evening then clearing. At higher elevations, a chance of snow showers, a slight chance of showers and thunderstorms in the evening. Lows 23 to 38 higher elevations and 36 to 46 lower elevations. Snow level 7000 feet. Prevailing north winds up to 10 mph shifting to the northeast after midnight. Wednesday: Sunny. Not as cool. Highs 45 to 60 higher elevations and 58 to 68 lower elevations. Light winds becoming west up to 10 mph in the afternoon. Wednesday Night: Partly cloudy in the evening then clearing. Lows 28 to 43 higher elevations and 41 to 51 lower elevations. Prevailing west winds up to 10 mph shifting to the northeast after midnight. Thursday: Mostly sunny. Warmer. Highs 52 to 67 higher elevations and 64 to 74 lower elevations. Prevailing east winds up to 10 mph shifting to the west in the afternoon. Thursday Night: Mostly cloudy. Lows 38 to 53. Friday: Mostly cloudy. Highs 56 to 71. Friday Night: Mostly cloudy. Lows 37 to 52. Saturday: Mostly cloudy with a chance of rain showers. Highs 45 to 60. Saturday Night: Mostly cloudy with a chance of rain and snow showers. Colder. Lows 32 to 47. Sunday: Partly cloudy with a slight chance of rain showers, thunderstorms and snow showers. Highs 46 to 61. Sunday Night: Mostly clear. Lows 33 to 48. Monday: Sunny, warmer. Highs 57 to 72. |