CNRFC - Hydrology - Observed River/Reservoir Conditions

RUSSIAN RIVER - GUERNEVILLE (GUEC1)

Latitude: 38.50º N	Longitude: 123.00º W	Elevation: 65 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Monitor Stage: 29.0 Feet

Flood Stage: 32.0 Feet

Plot Type:

Observed Data Credit
	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
2023*	44,600**	31.83	Jan 10, 2023
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
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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Impacts - E19 Information
49.5 Feet	Flood of record. 2/18/1986 (102,000cfs).
48.5 Feet	Near record flooding. In Guerneville the Veterans building and the Sheriffs substation begin to flood.
47.0 Feet	In Guerneville businesses on the north side of Main Street flood. Travel most areas impossible.
46.0 Feet	Disastrous flooding. In Guerneville much of downtown floods. The Guerneville post office begins to flood. In Rio Nido, River Road floods.
45.0 Feet	Disastrous flooding is forecast to occur along the lower Russian River. Much of downtown Guerneville will become inundated. Many roads will flood making travel nearly impossible throughout the reach.
44.0 Feet	In 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.
41.5 Feet	In Guerneville, River Road closed. In Monte Rio the main intersections flood. Monte Rio Elementary School begins to flood.
40.0 Feet	Major flooding is expected along the Russian River. In Guerneville travel on River Road becomes very difficult. In Northwood upper Redwood Drive floods. In Cazadero Austin Creek Road floods.
39.0 Feet	West of Duncan Mills HWY 116 is closed. In Hacienda River Road floods. In Rio Nido Canyon 7 Road at the miniture golf course floods. In Guerneville the Triple R Resort begins to flood.
38.0 Feet	In Duncan Mills Freezeout Road at Moscow Road floods. In Guerneville Park Cazadero Road at HWY 116 floods.
37.0 Feet	In 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.
36.0 Feet	In Forestville Mirabel Park Resort and Mirabel trailer park flood. In Guerneville Fern Road at HWY 116 floods.
35.0 Feet	Moderate flooding is forecast along the lower Russian River. Numerous businesses and residences in the lowest sections of towns within the reach are expected to flood. In Guerneville Brookside Resort begins to flood. More extensive flooding occurs at Parkers Resort. In Northwood lower Redwood Drive floods.
34.0 Feet	In Guerneville flooding begins at Johnsons Resort, Parkers Resort, Creekside Resort and Riverside Park. In Northwood lower Redwood Drive begins to flood.
33.0 Feet	In Guerneville the intersection of HWY 116 and Drake Rd is closed. In Monte Rio Willow and Alder Streets flood. In Forestville Mirabel trailer park begins to flood.
32.5 Feet	In Guerneville the intersecton of HWY 116 and Neeley Rd is closed. Mays Canyon Rd by the old rodeo grounds is closed.
32.0 Feet	Flood stage. Minor flooding. Lower Mill Street in Guerneville and Old Bohemian Highway in Monte Rio are expected to flood.
29.0 Feet	Monitor stage.

Official 7 Day National Weather Service Forecast (CAZ506)

Rest of Tonight: Mostly clear. Lows in the mid 50s to upper 60s. West winds 5 to 10 mph.

Tuesday: Sunny. Highs in the upper 70s to mid 90s. Southwest winds 5 to 15 mph.

Tuesday Night: Mostly clear. Lows in the 50s to lower 60s. West winds 5 to 15 mph.

Wednesday: Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Highs in the mid 70s to upper 80s. West winds 5 to 15 mph.

Wednesday Night: Mostly cloudy. Lows in the 50s to lower 60s. West winds 5 to 15 mph.

Thursday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog. Highs in the lower 70s to mid 80s.

Thursday Night and Friday: Partly cloudy. Lows in the 40s to upper 50s. Highs in the upper 60s to lower 80s.

Friday Night: Mostly cloudy. A chance of rain. Lows in the 50s.

Saturday: Mostly cloudy. Patchy fog. A chance of rain. Highs in the mid 60s to lower 80s.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. A slight chance of rain. Lows in the 50s.

Sunday: Partly cloudy in the morning then becoming sunny. Patchy fog. Highs in the upper 60s to lower 80s.

Sunday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the 50s.

Columbus Day: Partly cloudy in the morning then becoming sunny. Patchy fog. Highs in the upper 60s to mid 80s.

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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