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| Latitude: 38.61º N | Longitude: 122.84º W | Elevation: 77 Feet | |||
| Location: Sonoma County in California | Bulletin Group: Russian Napa | River Group: Russian Napa | |||
| Action/Monitor: 20.0 Feet | Minor Flood: 23.0 Feet | Moderate Flood: 27.0 Feet | Major Flood: 29.0 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the US Geological Survey (USGS). |
Historical Mean Daily Stage/Flow Data |
|||
|
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 |
| 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. |
| Official 7 Day National Weather Service Forecast (CAZ506) |
| rest of Today: Mostly cloudy. A chance of showers and isolated thunderstorms. Highs in the 50s to lower 60s. West winds 10 to 20 mph. Tonight: Mostly cloudy in the evening then becoming partly cloudy. A chance of showers in the evening. Patchy fog after midnight. Lows in the 40s to lower 50s. Northwest winds 10 to 20 mph and becoming north 5 to 10 mph after midnight. Tuesday: Sunny. Highs in the 50s to mid 60s. Northwest winds 5 to 10 mph. Tuesday Night: Mostly clear in the evening then becoming partly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to lower 50s. Northwest winds 5 to 10 mph and Becoming northeast after midnight. Wednesday: Mostly cloudy. Patchy fog in the morning. A chance of rain in the afternoon. Highs in the lower 50s to mid 60s. East winds around 5 mph and becoming south in the afternoon. Chance of rain 40 percent. Wednesday Night: Rain likely. Lows in the mid 40s to lower 50s. Thursday: Rain likely. Highs in the lower 50s to mid 60s. Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. A chance of rain. Lows in the 40s to lower 50s. Friday through Sunday: Partly cloudy. Highs in the 50s to upper 60s. Lows in the 40s to lower 50s. |
| 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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