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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: | Jul 11 2017 at 7:06 AM PDT | Next Issuance: | Jul 12 2017 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 | |||
2015* |
42,900 |
36.10 |
Dec 12, 2014 |
2014* |
17,300 |
19.17 |
Feb 9, 2014 |
2013* |
38,400 |
32.79 |
Dec 24, 2012 |
2012* |
26,800 |
24.99 |
Mar 28, 2012 |
2011* |
37,300 |
28.82 |
Mar 21, 2011 |
| Historical High Stage/Flow Events (Period of Record - February 1940 to Present) | |||
1986* |
102,000 |
48.56 |
Feb 18, 1986 |
1995* |
93,900 |
48.01 |
Feb 19, 1995 |
1965* |
93,400 |
49.60 |
Dec 23, 1964 |
1956 |
90,100 |
49.70 |
Dec 23, 1955 |
1940 |
88,400 |
46.87 |
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) |
| Tonight: Clear in the evening then becoming partly cloudy. Lows in the upper 40s to lower 60s. South winds 10 to 20 mph. Wednesday: Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 70s to 80s. South winds 10 to 20 mph. Wednesday Night: Clear in the evening then becoming partly cloudy. Lows in the upper 40s to lower 60s. Southwest winds 10 to 20 mph. Thursday: Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the mid 70s to upper 80s. Southwest winds 10 to 20 mph. Thursday Night: Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s to lower 60s. Southwest winds 10 to 20 mph. Friday: Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to lower 90s. Friday Night through Tuesday: Clear. Lows in the lower 50s to mid 60s. Highs in the upper 70s to mid 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, Marabel 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, Marabel Park Resort and Marabel Trailer Park flood. In Guerneville, Fern Road at Hwy 116 floods. |
| 37.0 Feet | In 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 Feet | In Duncan Mills, Freezout Road at Moscow Road floods. In Guerenville, 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. |