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

Hydrograph

River at a Glance

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

NOTE: Stage may be affected by ice during winter months. NOTE: Forecasts are not available for the East Walker River near Bridgeport. Only observed stages are available for this point.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 7 Moderate Flood Stage: 6.5 Flood Stage: 6 Action Stage: 5.5 Low Stage (in feet): 0 Historic Crests (P): Preliminary values subject to further review. Recent Crests (P): Preliminary values subject to further review. 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

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7	Major Flooding on East Walker River from below Bridgeport Reservoir to confluence with West Walker River near Mason, NV. About 2030 cfs, slightly more severe than record flood of Jan. 4, 1997 (1910 cfs).
6.5	Moderate Flooding on East Walker River from below Bridgeport Reservoir to confluence with West Walker River near Mason, NV. About 1640 cfs. Not as severe as record flood of Jan. 4, 1997 (1910 cfs), but greater than floods of June 3, 1986 (1370 cfs), July 6, 1967 (1360 cfs) and June 19, 1963 (1390 cfs).
6	Flood Stage; about 1300 cfs. Minor Flooding on East Walker River from below Bridgeport Reservoir to confluence with West Walker River near Mason, NV. Similar to floods of June 3, 1986 (1370 cfs), July 6, 1967 (1360 cfs) and June 19, 1963 (1390 cfs).
5.5	Monitor Stage, about 1000 cfs. No flooding on East Walker River from below Bridgeport Reservoir to confluence with West Walker River near Mason, NV

About This Location

Latitude: 38.327696° N, Longitude: 119.214876° W, Horizontal Datum: NAD27 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 6 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 6400 6405.7 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 Bridgeport

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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