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| Latitude: 39.24º N | Longitude: 121.99º W | Elevation: 62 Feet | ||
| Location: Colusa County in California | Bulletin Group: Upper Sacramento | River Group: Upper Sacramento | ||
| Action/Monitor: 60.9 Feet | Minor Flood: 70.1 Feet | Moderate Flood: 72.9 Feet | Major Flood: 73.9 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the California Department of Water Resources. |
Historical Mean Dailiy Stage/Flow Data |
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|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
| 2025 | 44,261 | 67.99 | Feb 07, 2025 |
| 2024 | 34,400 | 67.27 | Feb 21, 2024 |
| 2023 | 26,500 | 66.60 | Mar 16, 2023 |
| 2022 | 0**** | -- | -- |
| 2021 | 0**** | -- | -- |
| Historical High Stage/Flow Events (Period of Record - January 1911 to Present) - Ranked by Stage | |||
| 1940 | -- | 70.60* | Mar 1, 1940 |
| 1983 | 81,500 | 68.96** | Mar 4, 1983 |
| 1997 | 71,000 | 68.85 | Jan 3, 1997 |
| 1958 | 83,600 | 68.80*** | Feb 21, 1958 |
| 1965 | 77,400 | 68.50 | Jan 7, 1965 |
| 1943 | -- | 68.30 | Jan 24, 1943 |
| * Peak prior to regulation by Shasta Dam ** Peak after regulation by Shasta Dam *** Peak also occurred on Feb 26th **** No weir flow observed during the entire water year ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.9 ft and must be applied to all data before date to convert to NAVD88 |
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| Location Photographs | ||
| ESRI™ Locator Map |
| 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. |
| 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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