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


Latitude: 38.50º NLongitude: 123.00º WElevation: 65 Feet
Location: Sonoma County in CaliforniaRiver Group: Russian Napa
Issuance Time: Mar 17 2018 at 8:39 AM PDTNext Issuance: Mar 18 2018 at 9:00 AM PDT
Monitor Stage: 29.0 FeetFlood Stage: 32.0 Feet
Observed Data Credit
Gage owner logo

Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
Mar 11, 2016
Dec 12, 2014
Feb 9, 2014
Dec 24, 2012
Mar 28, 2012
 Historical High Stage/Flow Events (Period of Record - February 1940 to Present)
Feb 18, 1986
Feb 19, 1995
Dec 23, 1964
Dec 23, 1955
Feb 28, 1940
 * Discharge affected to unknown degree by regulation or diversion
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ506)
Rest of Today: Mostly cloudy. A chance of showers and a slight chance of thunderstorms. Highs in the upper 40s to lower 60s. Northwest winds 10 to 20 mph.

Tonight: Partly cloudy. A slight chance of showers in the evening. Patchy dense fog after midnight. Lows in the upper 20s to lower 40s. North winds 10 to 20 mph decreasing to up to 5 mph after midnight.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog in the morning. Highs in the 50s to lower 60s. Northeast winds 5 to 10 mph and becoming south in the afternoon.

Sunday Night: Mostly cloudy. Lows in the lower 30s to mid 40s. Northwest winds 5 to 10 mph.

Monday: Partly cloudy in the morning then becoming sunny. Highs in the 50s to upper 60s. Northeast winds 10 to 20 mph and becoming southeast 5 to 10 mph in the afternoon.

Monday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the 30s to upper 40s.

Tuesday: Mostly cloudy. Breezy. A chance of rain. Highs in the 50s to lower 60s.

Tuesday Night: Breezy, rain. Lows in the mid 40s to lower 50s.

Wednesday: Rain likely. Highs in the 50s to upper 60s.

Wednesday Night: Breezy, rain. Lows in the 40s to lower 50s.

Thursday: Breezy. Showers likely. Highs in the 50s to lower 60s.

Thursday Night and Friday: Mostly cloudy. A chance of showers. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s.
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, Marabel 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, Marabel Park Resort and Marabel Trailer Park flood. In Guerneville, Fern Road at Hwy 116 floods.
37.0 FeetIn Forestville, Marabel 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, Freezout Road at Moscow Road floods. In Guerenville, Park 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)
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.