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| SACRAMENTO RIVER - COLUSA WEIR (CLAC1) | ||||||||||||||||||
| Latitude: 39.24º N | Longitude: 121.99º W | Elevation: 62 Feet | ||||||||||||||||
| Location: Colusa County in CA | ||||||||||||||||||
| River Group: Upper Sacramento | ||||||||||||||||||
| Issuance Time: | Jan 07 2026 at 3:05 PM PST |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. |
| 10-Day Accumulated Volume Plot |
| Tabular 10-Day Streamflow Volume Accumulation (1000s of Acre-Feet) Data Updated: Jan 07 2026 at 3:12 PM PST | ||||||||||
| Prob | Jan 08 | Jan 09 | Jan 10 | Jan 11 | Jan 12 | |||||
| 10% (Max) | 55.4 | 84.4 | 99.3 | 102.6 | 102.9 | |||||
| 25% | 55.4 | 82.8 | 92.6 | 94.6 | 94.8 | |||||
| 50% (Prob) | 55.4 | 81.8 | 89.5 | 91.0 | 91.2 | |||||
| 75% | 55.4 | 81.5 | 88.4 | 89.7 | 89.9 | |||||
| 90% (Min) | 55.4 | 81.3 | 87.8 | 89.1 | 89.3 | |||||
| RFC FCST | 55.4 | 81.4 | 88.2 | 89.6 | 89.8 | |||||
| Prob | Jan 13 | Jan 14 | Jan 15 | Jan 16 | Jan 17 | |||||
| 10% (Max) | 102.9 | 102.9 | 102.9 | 102.9 | 102.9 | |||||
| 25% | 94.8 | 94.8 | 94.8 | 94.8 | 94.8 | |||||
| 50% (Prob) | 91.2 | 91.2 | 91.2 | 91.2 | 91.2 | |||||
| 75% | 89.9 | 89.9 | 89.9 | 89.9 | 89.9 | |||||
| 90% (Min) | 89.3 | 89.3 | 89.3 | 89.3 | 89.3 | |||||
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ016) |
| Tonight: Mostly cloudy in the evening then clearing. A slight chance of rain early in the evening. A chance of rain showers and a slight chance of thunderstorms late in the evening, then a slight chance of rain after midnight. Patchy fog through the night. Lows around 37. Southwest winds up to 10 mph in the evening becoming light. Thursday: Areas of frost in the morning. Mostly sunny. Highs around 49. Northwest winds up to 15 mph. Gusts up to 25 mph in the afternoon. Thursday Night: Mostly clear. Lows 33 to 39. North winds 10 to 15 mph. Friday: Mostly sunny. Highs around 50. North winds up to 10 mph with gusts to around 20 mph. Friday Night: Clear in the evening then becoming partly cloudy. Areas of frost and patchy fog after midnight. Lows around 35. Light winds. Saturday: Mostly cloudy. Areas of frost. Highs around 51. Saturday Night: Mostly cloudy. Patchy fog. Lows around 38. Sunday: Mostly cloudy. Highs 50 to 56. Sunday Night: Partly cloudy. Patchy fog. Lows around 38. Monday and Monday Night: Mostly clear. Patchy fog. Highs 52 to 60. Lows 38 to 44. Tuesday: Partly cloudy. Patchy fog. Highs 54 to 62. Tuesday Night and Wednesday: Mostly clear. Patchy fog. Lows 40 to 46. Highs 55 to 65. |
| Flood Impacts | |
| 73.9 Feet | Stages above 73.9 feet result in major flooding. Top of levee. |
| 60.9 Feet | Colusa Weir crest elevation. Overflow begins into the Sutter Bypass. |