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Latitude: 38.50º N | Longitude: 123.00º W | Elevation: 65 Feet | |
Location: Sonoma County in California | River Group: Russian Napa |
Issuance Time: | Mar 20 2023 at 1:54 PM PDT | Next Issuance: | Mar 21 2023 at 9:00 AM PDT |
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 | |||
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 | ||
ESRI™ Locator Map |
Official 7 Day National Weather Service Forecast (CAZ506) |
Rest of Tonight: Rain likely late in the evening, then rain after midnight. Lows in the 30s to mid 40s. South winds 5 to 10 mph and becoming east 10 to 20 mph after midnight. Tuesday: Breezy, rain. Highs in the mid 40s to lower 50s. East winds 20 to 30 mph. Tuesday Night: Rain likely. Lows in the 30s to upper 40s. East winds 10 to 20 mph. Wednesday: Mostly cloudy. A chance of showers. Highs in the 50s. Northeast winds 5 to 10 mph and becoming northwest in the afternoon. Chance of showers 50 percent. Wednesday Night: Mostly cloudy. Lows in the 30s to upper 40s. West winds 5 to 15 mph. Thursday: Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s. Thursday Night and Friday: Partly cloudy. Lows in the 30s to mid 40s. Highs in the 50s to lower 60s. Friday Night through Saturday Night: Mostly clear. Lows in the 30s to lower 40s. Highs in the 50s to lower 60s. Sunday: Partly cloudy. Areas of frost. A slight chance of rain. Highs in the 50s. Sunday Night and Monday: Mostly cloudy. A chance of rain. Lows in the upper 30s to mid 40s. Highs in the upper 40s to mid 50s. |
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) |
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. |