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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 |
Observed Data Credit | |
![]() | Raw streamflow data is provided by the US Geological Survey (USGS). |
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 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, Old 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) |
Official 7 Day National Weather Service Forecast (CAZ506) |
Rest of Tonight: Partly cloudy late in the evening then becoming mostly clear. Patchy fog after midnight. Lows in the mid 30s to upper 40s. Northwest winds up to 5 mph. Monday: Partly cloudy in the morning then becoming sunny. Patchy dense fog in the morning. Highs in the upper 50s to mid 60s. Northwest winds 5 to 10 mph. Monday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 30s to upper 40s. Northwest winds 5 to 10 mph. Tuesday: Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 50s to upper 60s. North winds up to 5 mph and becoming northwest in the afternoon. Tuesday Night: Mostly clear in the evening then becoming mostly cloudy. Lows in the 30s to mid 40s. North winds up to 5 mph. Wednesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy dense fog. Highs in the upper 50s to mid 60s. Wednesday Night through Friday Night: Mostly cloudy. Lows in the mid 30s to upper 40s. Highs in the 50s to mid 60s. Saturday: Partly cloudy in the morning then becoming sunny. Highs in the 50s to upper 60s. Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. A slight chance of rain. Lows in the 30s to upper 40s. Sunday: Mostly cloudy. A chance of rain. Highs in the 50s to mid 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. |