National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service


Latitude: 39.03º NLongitude: 123.13º WElevation: 498 Feet
Location: Mendocino County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Feb 25 2024 at 8:03 AM PSTNext Issuance: Feb 26 2024 at 9:00 AM PST
Monitor Stage: N/A Flood Stage: 15.0 Feet

Please Note: Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
Oct 24, 2021
Feb 2, 2021
Jan 16, 2020
Feb 27, 2019
Apr 6, 2018
 Historical High Stage/Flow Events (Period of Record - Oct 1939 to Present) - Ranked by Flow
Dec 22, 1955
Dec 22, 1964
Jan 16, 1974
Dec 31, 2005
Feb 17, 1986
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
15.0 FeetFlooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect minor flooding of crop land on the right bank of the river.
17.0 FeetSignificant flooding of Highway 175 at the approaches to the Russian River bridge. Minor flooding of Highway 222 near Ukiah, and in crop land along the left and right banks of the Russian River near Hopland.
18.0 FeetFlooding of Highway 222 near Ukiah. Secondary roads in low-lying areas will be flooded in the Hopland, Ukiah, and Talmage areas.
20.0 FeetFlooding of low-lying structures east of the railroad tracks near Hopland.
21.0 FeetFlooding of low-lying structures just west of the railroad tracks near Hopland.
23.0 FeetFlooding of farm land, buildings and low-lying homes in the Hopland area. Flooding will begin in the Ukiah and Talmage areas.
24.0 FeetFlooding of low-lying structures and farm land in the Hopland, Ukiah, and Talmage areas. Many secondary roads may also be flooded. Severe bank erosion is possible.
25.0 FeetSevere bank erosion is likely with widespread flooding of farm land, buildings and low-lying homes in the Hopland, Ukiah, and Talmage areas. Many secondary roads will be flooded. This level of flooding caused 6100 acres to flood in February 1940.
26.0 FeetWidespread major flooding will occur. Primary roads and some bridges will flood.
27.0 FeetWidespread major flooding. At the forecast level, over 500 homes and farm buildings were damaged on December 22,1955. 6300 acres of land were inundated by flood waters. All persons in the area are urged to move to high ground and take appropriate action to protect life and property.
28.0 FeetDisastrous flooding will occur. Many homes and businesses could be damaged. Many primary and secondary roads and some bridges could be washed out.
30.0 FeetDisastrous flooding. Many homes and businesses damaged. Numerous primary and secondary roads and some bridges could be washed out. This is equal to the highest known stage, which occurred in December 1937. 6500 acres were inundated by flood waters.
Official 7 Day National Weather Service Forecast   (CAZ113)
Tonight: Partly cloudy in the evening then becoming mostly cloudy. Patchy valley fog. Lows 38 to 48. At higher elevation, southwest wind up to 20 mph overnight.

Monday: Mostly cloudy. Patchy valley fog in the morning. Slight chance of rain showers in the morning. Highs 47 to 58. Northwest wind around 20 mph in the afternoon.

Monday Night: Mostly clear. Lows 28 to 38. At higher elevation, northwest wind up to 25 mph in the evening.

Tuesday: Sunny. Highs 48 to 58.

Tuesday Night: Partly cloudy. Patchy valley fog. Lows 32 to 42.

Wednesday: Mostly sunny. Highs 52 to 63.

Wednesday Night: Mostly cloudy. Chance of rain. Lows 38 to 48.

Thursday through Friday: Rain. Highs 41 to 55. Lows 37 to 47.

Friday Night and Saturday: Rain and snow. Lows 29 to 39. Highs 39 to 51.

Saturday Night and Sunday: Mostly cloudy. Chance of rain and snow. Lows 26 to 36. Highs 39 to 54.
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 Eureka 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.