Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

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 Reno, NV

California Nevada River Forecast Center

Winter Weather Advisory

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PST) Datum: Not Available Metadata

NOTE: Stage may be affected by ice during winter months. NOTE: Reported historic crests have been estimated using recent ratings due to previous channel, location and/or datum changes. USGS observed crests can be found at: waterdata.usgs.gov/nwis/rt Please also see Additional Information tab at the bottom of this page. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the West Fork Carson River at Woodfords are issued routinely year-round.

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Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 15 Moderate Flood Stage: 14.5 Flood Stage: 13.5 Action Stage: 12.5 Low Stage (in feet): 0 Historic Crests (1) 15.36 ft on 01/01/1997 (2) 14.95 ft on 02/01/1963 (P) (3) 14.92 ft on 12/23/1955 (P) (4) 14.90 ft on 11/20/1950 (P) (5) 14.62 ft on 12/11/1937 (P) Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 11.61 ft on 12/31/2023 (P) (2) 14.03 ft on 05/19/2023 (P) (3) 13.53 ft on 05/01/2023 (P) (4) 13.53 ft on 10/25/2021 (P) (5) 13.50 ft on 06/07/2019 (P) Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 9.10 ft on 12/23/1961 (2) 9.10 ft on 09/02/1977 (3) 9.15 ft on 09/08/1988 Show More Low Water Records

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

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15.5	Disastrous, record flooding along entire reach of West Fork Carson River in both Alpine County, California, and Douglas County, Nevada. Extensive damage to homes, businesses, schools, roads, bridges, and irrigation systems. Communications, power, and transportation systems severely disrupted. Many highways, roads, and bridges impassable. Roughly Similar peak level to January 1997 event.
15	Major Flooding. Substantial damage to homes, businesses, schools, and property in south Carson Valley from Centerville to Genoa. Many local roads flood including Centerville, Mottsville, and Muller Lanes. Interruption of power, communications, and water systems. Major flooding also in Alpine County, California, near Woodfords and Paynesville. CA Highways 89 and 88, and NV Highway 88 flood. Downstream Hwy 395 floods.
14.5	Moderate flooding in southwest Carson Valley between Centerville and Genoa, with some damage to homes and businesses. Many local roads flooded in this area. Minor to moderate flooding in Alpine County, California, near Woodfords and Paynesville. Lane or road closures on Highway 395 north of Stephanie Way likely if combined with flood flows on the East Fork. Similar peak level to December 2005 event.
14	Minor flooding in the southwestern Carson Valley between Centerville and Genoa,impacting agricultural areas, local roads, and outbuildings. Impacts will be more significant if heavy rain and/or snowmelt cause significant rises in small creeks draining the east side of the Carson Range below Woodfords. Possible lane closures on Highway 395 north of Stephanie Way if combined with flood flows on the East Fork. Similar peak level to January 2017 event and May 2017 peak snowmelt.
13.5	Minor flooding begins in lowest areas along the West Fork of the Carson River in southwest Carson Valley including agricultural areas, local roads and outbuildings. Residents along the river should prepare for more serious flooding if there are additional rises expected due to snowmelt and/or rainfall runoff. Impacts will be more significant if heavy rain and/or snowmelt causes significant rises in small creeks draining the east side of the Carson Range below Woodfords. Similar to peak of Feb 2017 event.
12.5	Monitoring Stage. No flooding occurs. However, residents along the West Fork Carson River should be prepared for flooding if there are additional rises expected due to snowmelt and/or rainfall runoff.
Photos (1) Downstream View from Gage House at stage of 12.48 feet (2) Upstream View from Gage House at Stage of 12.48 feet

About This Location

Latitude: 38.769628° N, Longitude: 119.833789° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 13.5 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 5754.5 ft 5768.5 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 Woodfords

Additional Information

Reported historic crest estimates have been normalized using USGS Rating 29 (as of 10/23/2023) due to previous channel, location and/or datum changes. For observed crests please go to:https://nwis.waterdata.usgs.gov/usa/nwis/peak/?site_no=10310000

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary California-Nevada River Forecast Center Homepage USGS Real-Time Hydrologic Data for Nevada USGS Real-Time Hydrologic Data for California NWS Climate Prediction Center: Outlook Maps, Graphs & Tables NV NRCS Snow Program Inundation Mapping Locations California Data Exchange Guide to NWS Hydrologic Information on the Web

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management NWS Headquarters, Silver Spring MD NWS Western Region Headquarters, Salt Lake City UT Western Regional Climate Center, Reno NV NWS Forecast Office Homepage, Reno NV NOAA Snow Information Center Flood Smart Web Page FEMA Flood Insurance Program FEMA Flood Insurance Rate Maps Interface

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