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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: Breezy. Showers and a slight chance of thunderstorms. Highs in the 50s. South winds 20 to 30 mph. Tonight: Showers and a slight chance of thunderstorms. Lows near 50. South winds 10 to 20 mph with gusts to around 35 mph. Sunday: Showers and a slight chance of thunderstorms in the morning, then showers likely in the afternoon. Highs in the 50s. Southwest winds 10 to 20 mph. Sunday Night: A chance of showers in the evening, then showers after midnight. Lows in the mid 40s to lower 50s. South winds 5 to 15 mph. Monday: Showers. Highs in the upper 40s to mid 50s. Southeast winds 10 to 15 mph. Monday Night: Patchy fog. Showers likely. Lows in the 40s. Tuesday: Mostly cloudy. Patchy fog. A slight chance of showers. Highs in the upper 40s to mid 50s. Tuesday Night and Wednesday: Mostly cloudy. A chance of showers. Lows in the 30s to upper 40s. Highs in the upper 40s to mid 50s. Wednesday Night: Partly cloudy. A slight chance of showers. Lows in the mid 30s to lower 40s. Thursday: Sunny. Highs in the upper 40s to mid 50s. Thursday Night and Friday: Mostly clear. Areas of frost. Lows in the 30s to lower 40s. Highs in the 40s to mid 50s. |
| 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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