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| Latitude: 39.34º N | Longitude: 122.02º W | Elevation: 76 Feet | |
| Location: Colusa County in California | River Group: Upper Sacramento | ||
| Monitor Stage: 76.2 Feet | Flood Stage: 83.8 Feet | Danger Stage: 84.8 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the California Department of Water Resources. |
Historical Stage/Flow Data |
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Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months. |
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Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
| 2025* | 10,516 | 79.57 | Feb 07, 2025 |
| 2024* | 3,940 | 78.05 | Feb 21, 2024 |
| 2023* | 4,380 | 78.18 | Mar 16, 2023 |
| 2022* | 0**** | -- | -- |
| 2021* | 0**** | -- | -- |
| Historical High Stage/Flow Events (Period of Record - Jan 1931 to Present)** - Ranked by Flow | |||
| 1942 | 53,900 | 83.80*** | Feb 7, 1942 |
| 1958* | 45,300 | 84.65*** | Feb 20, 1958 |
| 1940* | 45,300 | 84.69*** | Feb 28, 1940 |
| 1941* | 42,200 | 84.44*** | Feb 12, 1941 |
| 1983* | 35,300 | 83.71*** | Mar 3, 1983 |
| 1938* | 33,500 | 83.52*** | Dec 12, 1937 |
| * Discharge affected by regulation or diversion. ** Peak flow before regulation by Shasta Dam began in 1943 *** Old datum. The difference is -2.85 ft and must be applied to data to convert from NGVD29 to NAVD88 **** No weir flow observed during the entire water year ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.6 ft and must be applied to all data before date to convert to NAVD88 |
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| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ016) |
| Tonight: Mostly cloudy. Patchy fog through the night. Lows 42 to 47. Light winds. Wednesday: Mostly cloudy. Patchy fog through the day. Highs around 53. Light winds becoming south up to 10 mph in the afternoon. Wednesday Night: Mostly cloudy with a chance of rain in the evening, then partly cloudy with a slight chance of rain after midnight. Patchy fog through the night. Lows around 37. South winds up to 10 mph in the evening becoming light. Thursday: Areas of frost and patchy fog in the morning. Mostly sunny. Highs around 48. Northwest winds up to 15 mph. Thursday Night: Mostly clear. Lows 32 to 38. North winds 10 to 15 mph. Friday: Mostly sunny. Areas of frost. Highs around 50. Friday Night: Partly cloudy. Patchy fog and frost. Lows around 35. Saturday: Mostly cloudy. Areas of frost and patchy fog. Highs around 50. Saturday Night and Sunday: Mostly cloudy. Patchy fog. Lows around 38. Highs 50 to 56. Sunday Night: Mostly clear. Patchy fog. Lows around 39. Monday: Partly cloudy. Patchy fog. Highs 52 to 58. Monday Night and Tuesday: Mostly clear. Patchy fog. Lows 38 to 44. Highs 54 to 62. |
| Flood Impacts | |
| 88.6 Feet | Stages above 89.2 feet result in major flooding of areas outside the levees. Top of levee. |
| 76.2 Feet | Moulton Weir crest elevation. Overflow begins into butte sink. River Road is flooded and closed. |
| Product Disclaimer |
This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only. |
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