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 March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Brownsville, TX

West Gulf River Forecast Center

Special Weather Statement

Hydrograph

River at a Glance

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

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. NOTE: Forecasts are not available for the Rio Grande at Falcon Lake. Only observed stages are available for this point.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 314.2 Moderate Flood Stage: 306.7 Flood Stage: 301.2 Action Stage: 299 Low Stage (in feet): -9999 Historic Crests (1) 309.31 ft on 07/17/2010 (2) 308.10 ft on 10/19/1958 (3) 304.66 ft on 09/29/2010 (4) 304.43 ft on 09/07/2010 (5) 303.73 ft on 12/10/2008 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 304.66 ft on 09/29/2010 (2) 304.43 ft on 09/07/2010 (3) 301.20 ft on 08/20/2010 (4) 309.31 ft on 07/17/2010 (5) 303.73 ft on 12/10/2008 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

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

If you notice any errors in the below information, please contact our Webmaster
307	THE LAKE LEVEL IS SIX FEET ABOVE NORMAL POOL - BOATS, DOCKS, AND GEAR ARE INUNDATED WITH SEVERE DAMAGES UNLESS REMOVED.
301.2	THE LAKE LEVEL IS AT NORMAL POOL - BOATS CAN BE DAMAGED AND DOCKS AND GEAR INUNDATED.
299	THE LAKE LEVEL IS TWO FEET BELOW NORMAL POOL - BOATS ARE DAMAGED AND DOCKS INUNDATED UNLESS TIES ARE LOOSENED.

About This Location

Latitude: 26.559722° N, Longitude: 99.166667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 301.2 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 0 ft 301.2 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available

Additional Information

Pool height for historical crest on July 1, 1971 is missing.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management West Gulf River Forecast Center International Boundary and Water Commission Hydrometeorological Design Studies Center U.S. Drought Monitor U.S. Drought Portal

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 Brownsville Weather Forecast Office 20 South Vermillion Road Brownsville, TX 78521 (956) 504-1432 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities