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

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RUSSIAN RIVER - GUERNEVILLE (GUEC1)
Latitude: 38.50º NLongitude: 123.00º WElevation: 65 Feet
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Monitor Stage: 29.0 FeetFlood Stage: 32.0 Feet

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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2022*
25,600**
23.49
Oct 25, 2021
2021*
2,950**
8.24
Feb 13, 2021
2020*
6,930**
12.10
Dec 8, 2019
2019*
85,300**
45.38
Feb 27, 2019
2018*
15,900**
18.36
Apr 8, 2018
 Historical High Stage/Flow Events (Period of Record - February 1940 to Present) - Ranked by Flow
1986*
102,000**
49.50
Feb 18, 1986
1995*
93,900**
48.00
Jan 10, 1995
1965*
93,400**
47.35
Dec 23, 1964
1956
90,100**
47.62
Dec 23, 1955
1940
88,400**
46.87
Feb 28, 1940
2019*
85,300**
45.38
Feb 27, 2019
 * Discharge affected to unknown degree by regulation or diversion
 ** Estimated
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
32.0 FeetMinor flooding. Lower Mill Street in Guerneville and Old Bohemian Hwy in Monte Rio is closed.
32.5 FeetIn Guerneville, the intersection of Hwy 116 and Neely Road is closed. Mays Canyon Road by the Old Rodeo Grounds is closed.
33.0 FeetIn Guerneville, the intersection of Hwy 116 and Drake Road is closed. In Monte Rio, Willow and Alder Streets flood. In Forestville, Mirabel Trailer Park begins to flood.
34.0 FeetIn Guerneville, flooding begins at Johnsons Resort, Parkers Resort, Creekside Resort, and Riverside Park. In Northwood, Lower Redwood Drive begins to flood.
35.0 FeetNumerous businesses and homes in the lowest sections of towns begin to flood. In Guerneville, Sonoma West Inn begins to flood. More extensive flooding occurs at Parkers Resort. In Northwood, Lower Redwood Drive floods.
36.0 FeetIn Forestville, Mirabel Park Resort and Mirabel Trailer Park flood. In Guerneville, Fern Road at Hwy 116 floods.
37.0 FeetIn Forestville, Mirabel Road at River Road floods. In Guerneville, River Road east of Guerneville floods. Mill Street and 5th Street flood. In Monte Rio, River Blvd east of Monte Rio floods.
38.0 FeetIn Duncan Mills, Freezeout Road at Moscow Road floods. In Guerneville Park, Old Cazadero Road at Hwy 116 floods.
39.0 FeetWest of Duncan Mills, Hwy 116 closed. In Hacienda, River Road floods. In Rio Nido, Canyon 7 Road at the miniature golf course floods. In Guerneville, the Triple R Resort begins to flood.
40.0 FeetIn Guerneville, travel on River Road very difficult. In Northwood, Upper Redwood Drive floods. In Cazadero, Austin Creek Road floods.
41.5 FeetIn Guerneville, River Road closed. In Monte Rio, the main intersections flood. Monte Rio Elementary School begins to flood.
44.0 FeetIn Guerneville, Hwy 116 west of town closed. Safeway floods. In Monte Rio and Guerneville Park, the main business sections flood. Travel in most areas nearly impossible.
46.0 FeetIn Guerneville, much of downtown floods. The Guerneville Post Office begins to flood. In Rio Nido, River Road floods.
47.0 FeetIn Guerneville, businesses on the north side of Main Street flood. Travel most areas impossible.
48.5 FeetIn Guerneville, the Veterans Building and Sheriffs Substation begin to flood.
49.5 FeetFlood of Record. 02/18/1986 (102,000 cfs)
Official 7 Day National Weather Service Forecast   (CAZ506)
Rest of Today: Breezy. Showers and a slight chance of thunderstorms. Highs in the 40s to upper 50s. Southwest winds 15 to 20 mph and becoming 20 to 30 mph with gusts to around 45 mph in the afternoon.

Tonight: Breezy. Showers and a slight chance of thunderstorms. Lows in the upper 30s to mid 40s. Southwest winds 20 to 30 mph with gusts to around 50 mph.

Saturday: Showers and a slight chance of thunderstorms. Highs in the 40s to mid 50s. Southwest winds 10 to 20 mph.

Saturday Night: Showers likely in the evening. A slight chance of thunderstorms. A chance of showers after midnight. Lows in the 30s to mid 40s. West winds 10 to 20 mph. Chance of precipitation 70 percent.

Sunday: Mostly cloudy. A chance of rain. Highs in the upper 40s to mid 50s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows in the 30s to mid 40s.

Monday: Partly cloudy. A slight chance of rain. Highs in the 50s.

Monday Night through Wednesday: Mostly cloudy. A chance of rain. Lows in the 40s. Highs in the 50s to lower 60s.

Wednesday Night: Partly cloudy. A slight chance of rain. Lows in the upper 30s to mid 40s.

Thursday: Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to lower 60s.
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.