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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 Tonight: A chance of rain late in the evening, then rain after midnight. Lows in the mid 40s to lower 50s. South winds 5 to 10 mph and becoming southeast 10 to 20 mph after midnight. Monday: Rain in the morning, then rain likely in the afternoon. Highs in the upper 40s to mid 50s. Southeast winds 10 to 20 mph. Monday Night: Mostly cloudy. A chance of rain. Patchy fog after midnight. Lows in the 40s. East winds 5 to 10 mph. Tuesday: Mostly cloudy. Patchy dense fog in the morning. A slight chance of rain. Highs in the 50s. Northeast winds around 5 mph and becoming southeast in the afternoon. Chance of rain 20 percent. Tuesday Night: Mostly cloudy. Patchy fog. A slight chance of rain. Lows in the 40s. West winds up to 5 mph. Chance of rain 20 percent. Wednesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog. A slight chance of rain. Highs in the 50s. Wednesday Night and Thursday: Mostly clear. Lows in the upper 30s to mid 40s. Highs in the upper 40s to mid 50s. Thursday Night through Sunday: Partly cloudy. Lows in the 30s to mid 40s. Highs in the upper 40s to lower 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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