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Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office San Francisco Bay Area, CA

California Nevada River Forecast Center

Hydrograph

River at a Glance

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PST) Datum: NAVD88 Metadata

NOTE: Graphical forecasts are not available for the Russian River at Jimtown. During times of high water, forecast crest information can be found in the text products.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 36 Moderate Flood Stage: 31 Flood Stage: 26.2 Action Stage: 25 Low Stage (in feet): -9999 Historic Crests Currently none available. Recent Crests Currently none available. Low Water Records Currently none available.

Zoom Level:14 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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36	Major Flooding. Catastrophic regional floodplain inundation. Waters approaching the underside of the Alexander Valley Road bridge and wing wall on west side of river, with much of bridge and roadway on the east side already submerged. Alexander Valley RV Park and Campground fully flooded.
31	Moderate Flooding. More widespread floodplain inundation regionally is expected at this stage. Locally, lower portions of the Alexander Valley RV Park and Campground may begin to flood. NWS will issue a Flash Flood Warning, if not yet already issued.
26.2	Minor Flooding. River flowing at capacity; any additional rise in stage will cause widespread overtopping of natural levee crests on the lower east side of the river. Existing breaches, if any, will cause several feet of inundation on eastern floodplain, with flooding possible on Alexander Valley Road east of the river. NWS will issue an Urban/Small Stream Advisory, if not yet already issued.
24	Monitor Stage. Minor flooding possible on east side of river; water level is 2 feet below the lowest natural levee crests on the east side of the river. NWS will issue a Flash Flood Watch, if not yet already issued.

About This Location

Latitude: 38.658242° N, Longitude: 122.829438° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 26.2 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 143.69 ft 169.89 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Jimtown

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary California Data Exchange Center Most Recent Scheduled Reservoir Releases USGS Real-time Data for California USGS - Western Region Geologic Information Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information

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