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| Latitude: 38.61º N | Longitude: 122.84º W | Elevation: 77 Feet | |
| Location: Sonoma County in California | River Group: Russian Napa | ||
| Monitor Stage: 20.0 Feet | Flood Stage: 23.0 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the US Geological Survey (USGS). |
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* |
32,100 |
18.24 |
Nov 22, 2024 |
2024* |
26,300 |
16.41 |
Feb 5, 2024 |
2023* |
26,400 |
16.45 |
Jan 9, 2023 |
2022* |
17,900 |
13.55 |
Oct 25, 2021 |
2021* |
1,740 |
3.95 |
Feb 2, 2021 |
| Historical High Stage/Flow Events (Period of Record - Oct 1939 to Present) - Ranked by Flow | |||
1995* |
73,000 |
26.23 |
Jan 9, 1995 |
1965* |
71,300 |
27.00 |
Dec 23, 1964 |
1986* |
71,100 |
25.81 |
Feb 17, 1986 |
2019* |
67,300 |
26.84 |
Feb 27, 2019 |
1940 |
67,000 |
30.00 |
Feb 28, 1940 |
1997* |
65,700 |
24.61 |
Jan 01, 1997 |
| * Discharge affected by regulation or diversion | |||
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ506) |
| rest of Today: Sunny. Highs in the 60s to lower 70s. West winds 5 to 10 mph. Tonight: Mostly clear in the evening then becoming partly cloudy. Patchy fog. Lows in the upper 30s to lower 50s. Northwest winds up to 5 mph and becoming north after midnight. Tuesday: Sunny. Patchy dense fog in the morning. Highs in the 60s to lower 70s. Northeast winds 5 to 10 mph. Tuesday Night: Mostly clear except patchy fog after midnight. Lows in the upper 30s to lower 50s. Northeast winds 5 to 10 mph. Wednesday: Sunny. Patchy dense fog in the morning. Highs in the 60s to lower 70s. Northeast winds 5 to 10 mph. Wednesday Night: Mostly clear. Lows in the 40s to lower 50s. Thursday: Sunny in the morning then becoming partly cloudy. Highs in the 60s to lower 70s. Thursday Night: Mostly cloudy. Lows in the 40s to lower 50s. Friday: Partly cloudy. Highs in the 60s. Friday Night: Partly cloudy. Patchy fog. Lows in the 40s to lower 50s. Saturday: Partly cloudy. Areas of fog. Highs in the 60s. Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Areas of fog. A slight chance of rain. Lows in the 40s to lower 50s. Sunday: Mostly cloudy. Areas of fog. A slight chance of rain. Highs in the 60s. |
| Flood Impacts | |
| 30.0 Feet | Major to disastrous flooding along the reach of the gage occurs. Major flooding occurs in the agricultural sections of Alexander Valley. |
| 29.0 Feet | Major flooding along the reach of the gage will occur. Homes, businesses and secondary roads in the lower sections of Healdsburg will begin to flood. The lower areas of Alexander Valley will begin to flood. |
| 27.0 Feet | Moderate flooding along the reach of the gage will occur. Some secondary roads south of US 101 will have minor to moderate flooding. |
| 25.0 Feet | Low lying areas south of US 101 begin to have minor flooding. |
| 23.0 Feet | Minor flooding of farm land and banks in rural areas along the reach of the gage will occur. |
| 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 San Francisco Bay Area-Monterey 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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