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		River Group: Russian Napa

Monitor Stage: 29.0 Feet

Flood Stage: 32.0 Feet

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
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
2017*	64,500**	37.82	Jan 11, 2017
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

Official 7 Day National Weather Service Forecast (CAZ506)

Rest of Today: Sunny. Highs in the upper 60s to lower 80s. Southwest winds 10 to 20 mph.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower to mid 50s. Southwest winds 10 to 20 mph and becoming 5 to 10 mph after midnight.

Sunday: Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to lower 80s. Southwest winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.

Sunday Night: Clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. West winds 10 to 20 mph.

Monday: Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the lower 70s to mid 80s. Southwest winds 10 to 20 mph.

Monday Night: Mostly clear in the evening then becoming partly cloudy. Patchy fog. Lows in the 50s.

Tuesday: Mostly cloudy in the morning then becoming sunny. Highs in the 70s to 80s.

Tuesday Night and Wednesday: Mostly clear. Lows in the 50s to lower 60s. Highs in the mid 70s to lower 90s.

Wednesday Night and Thursday: Partly cloudy. Lows in the 50s to lower 60s. Highs in the mid 70s to lower 90s.

Thursday Night and Friday: Mostly clear. Lows in the 50s to lower 60s. Highs in the mid 70s to lower 90s.

Impacts - E19 Information
32.0 Feet	Minor flooding. Lower Mill Street in Guerneville and Old Bohemian Hwy in Monte Rio is closed.
32.5 Feet	In Guerneville the intersection of Hwy 116 and Neely Road is closed. Mays Canyon Road by the Old Rodeo Grounds is closed.
33.0 Feet	In 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 Feet	In Guerneville, flooding begins at Johnsons Resort, Parkers Resort, Creekside Resort, and Riverside Park. In Northwood, Lower Redwood Drive begins to flood.
35.0 Feet	Numerous 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 Feet	In Forestville, Mirabel Park Resort and Mirabel Trailer Park flood. In Guerneville, Fern 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.
38.0 Feet	In Duncan Mills, Freezeout Road at Moscow Road floods. In Guerneville, Park Cazadero Road at Hwy 116 floods.
39.0 Feet	West 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 Feet	In Guerneville, travel on River Road very difficult. In Northwood, Upper Redwood Drive floods. In Cazadero, Austin Creek Road floods.
41.5 Feet	In Guerneville, River Road closed. In Monte Rio, the main intersections flood. Monte Rio Elementary School begins to flood.
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.
46.0 Feet	In Guerneville, much of downtown floods. The Guerneville Post Office begins to flood. In Rio Nido, River Road floods.
47.0 Feet	In Guerneville, businesses on the north side of Main Street flood. Travel most areas impossible.
48.5 Feet	In Guerneville, the Veterans Building and Sheriffs Substation begin to flood.
49.5 Feet	Flood of Record. 02/18/1986 (102,000 cfs)

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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