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| Latitude: 38.36º N | Longitude: 121.34º W | Elevation: 5 Feet | |
| Location: Sacramento County in California | River Group: San Joaquin | ||
| Monitor Stage: 38.5 Feet | Flood Stage: 44.5 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the California Department of Water Resources. |
Historical Stage/Flow Data |
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|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
| 2025* | 13,700*** | 42.59*** | Feb 15, 2025 |
| 2024* | 13,400 | 42.98 | Mar 2, 2024 |
| 2023* | 73,600*** | 46.64*** | Jan 1, 2023 |
| 2022* | 7,790 | 38.99 | Dec 24, 2021 |
| 2021* | 3,000 | 32.00 | Jan 29, 2021 |
| Historical High Stage/Flow Events (Period of Record - Jan 1952 to Present)**** - Ranked by Flow | |||
| 2023* | 73,600*** | 46.64*** | Jan 1, 2023 |
| 1956* | 54,000 | 46.26 | Dec 23, 1955 |
| 2006* | 36,209 | 47.02 | Jan 01, 2006 |
| 1958 | 32,600 | 46.10 | Apr 03, 1958 |
| 1965* | 32,200 | 45.35 | Dec 23, 1964 |
| 1983* | 31,000 | 45.97 | Mar 14, 1983 |
| * Discharge affected by regulation or diversion ** Dataum changed from USED to NAVD88 on 06/20/2023. The difference is +2.46 ft and must be applied to all data before date to convert to NAVD88. *** Estimated from simulated data. Gauge data not reliable/missing. **** Additional high flow events occurred in 1986, 1997, & 1998 with only stage measured. Ranking by stage is not possible due to the dynamic nature of the channel. |
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| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ017) |
| Flood Impacts | |
| 46.5 Feet | At approximately 44,000 cfs, water exits the river upstream and downstream of Highway 99. Dillard Road is flooded from Highway 99 to Riley Road. Twin Cities Road is flooded from Hardesty Lane to Christensen Road. |
| 44.5 Feet | Flood stage. |
| 41.5 Feet | The Cosumnes River overflow channel begins to flow. |
| 38.5 Feet | Monitor Stage. |
| 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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