Web Portal Changes:

• AHPS - water.weather.gov- Scheduled operations ends on Tuesday, May 28th, 2024
• Please see water.noaa.gov/gauges/HARP1.  Please sub in your favorite location ID for HARP1 - bookmark it NOW
• The pages will automatically redirect to water.noaa.gov until May 28, 2025.
• Other Important URL changes - Service Change Notice 24-29 

Please visit https://www.weather.gov/owp/operations for more information.

Weather Forecast Office San Francisco Bay Area, CA

California Nevada River Forecast Center

Hydrograph

River at a Glance

Download

Probability Information Chance of Exceeding Levels During Entire Period Not Available Weekly Chance of Exceeding Levels Not Available Short-term Probabilistic Guidance (Experimental) Not Available

Auto Refresh: OFF

Printable Image About this graph Tabular Data (UTC) Tabular Data (PDT) Datum: NGVD29 Metadata

NOTE: Forecasts are not available for the Laguna de Santa Rosa at Stony Point Road NR Cotati. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 89 Moderate Flood Stage: 85 Flood Stage: 84 Action Stage: 82 Low Stage (in feet): -9999 Historic Crests Currently none available. Recent Crests Currently none available. Low Water Records Currently none available.

Zoom Level:16 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

If you notice any errors in the below information, please contact our Webmaster
89	Major Flooding. Martin Avenue commercial district, as well as Labath Avenue and Commerce Blvd town center (Rohnert Park) susceptible to flooding (Copeland Creek immediately to the south is also probably flooding into the same area). Rancho Verde trailer park flooded. Backwater at Highway 101.
85	Moderate Flooding. Redwood Drive at Martin Avenue area in Rohnert Park, including Martin Avenue commercial area, may begin to flood. Rancho Verde trailer park likely beginning to flood. NWS will issue a Flash Flood Warning, if not yet already issued.
84	Minor Flooding. Rohnert Park Expressway begins to flood west of Rohnert Park. City turns on storm drain pumps to relieve back pressure, sending water back to the channel. NWS will issue an Urban/Small Stream Advisory, if not yet already issued.
82	Monitor Stage. City of Rohnert Park begins to monitor the gage and is alerted via USGS Water Watch notification. NWS will issue a Flash Flood Watch if not yet already issued.

About This Location

Latitude: 38.352137° N, Longitude: 122.744155° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 84 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 0 ft 84 ft 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 Stony Point Road NR Cotati

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

Collaborative Agencies The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. NWS Information National Weather Service San Francisco Bay Area Weather Forecast Office 21 Grace Hopper Ave, Stop 5 Monterey, CA 93943-5505 (831) 656-1725 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities