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    1. <mark id="8i82i"><u id="8i82i"><span id="8i82i"></span></u></mark>


      Rio Grande at Rio Grande City, TX (RGDT2)


      Data Type




      Inundation Levels
      NAVD88 Stage

      165.6*65.8*
      Record Crest: 65.78 ft
      164.865.0
      164.564.7
      163.864.0
      162.863.0
      161.862.0
      160.861.0
      159.860.0
      158.859.0
      157.858.0
      156.857.0
      155.856.0
      154.855.0
      153.854.0

      Major Flooding Begins

      152.853.0
      151.852.0

      Moderate Flooding Begins

      150.851.0

      Minor Flooding Begins

      149.850.0
      148.849.0

      Near Flooding Begins

      147.848.0
      146.847.0
      145.846.0
      144.845.0
      143.844.0
      142.843.0

      Below Flooding Begins

      * = Extended rating
      Weather Forecast Office Brownsville, TX West Gulf River Forecast Center
      Hydrograph River at a Glance Download Inundation
      Mapping
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      Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

      Current Stage:
      26.3 ft at 12/12/2019 19:15:00 UTC
      Selected Inundation
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      Inundation Legend
      Depth in feet
      USGS Gauge Location Gauge Location
      What is UTC time? Map Help

      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.

      Gauge Information Collapse

      Map Overlays

      Flood Categories (in feet)
      Major Flood Stage: 53
      Moderate Flood Stage: 51
      Flood Stage: 50
      Action Stage: 48
      Low Stage (in feet): 0

      Historic Crests
      (1) 65.78 ft on 09/27/1972
      (2) 57.63 ft on 07/11/2010
      (3) 57.31 ft on 07/16/2010
      (4) 50.06 ft on 07/08/2010
      (5) 32.34 ft on 09/29/1967
      Show More Historic Crests

      (P): Preliminary values subject to further review.

      Recent Crests
      (1) 57.31 ft on 07/16/2010
      (2) 57.63 ft on 07/11/2010
      (3) 50.06 ft on 07/08/2010
      (4) 3.56 ft on 04/25/1995
      (5) 5.58 ft on 04/18/1994
      Show More Recent Crests

      (P): Preliminary values subject to further review.

      Low Water Records
      Currently none available.

      Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

      Extended rating:
      Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

      Flood Impacts Collapse
      If you notice any errors in the below information, please contact our Webmaster
      66 The Rio Grande river reaches lowest areas of Rio Grande City itself - widespread disastrous flooding inundates most of the roads and highways in and out of town - hundreds of homes are flooded
      63.5 Widespread flooding reaches much of the flood plain south of town and floods Highway 83 west of Rio Grande City - the Rio Grande river backs up the Arroyo Los Olmos and floods Highway 755 and threatens lowest homes in the Los Olmos flood plain
      53 Major lowland flooding damages irrigation pumps, equipment, roads and threatens livestock - bridges in the flood plain are severely flooded and become dangerous - the river backs up on the Arroyo Los Olmos and floods the lowest homes near Highway 83 and FM 755 as well as floods these roads.
      50 Irrigation pumps, equipment, livestock, roads and bridges flood in low areas
      48 Minor lowland flooding damages irrigation pumps and equipment if they are not moved
      Additional Information Collapse
      Flood stage for the Rio Grande river at Rio Grande City has changed from 21.0 feet to 50.0 feet as of October 15, 2003. Users of historical data need to increase historical levels by 29.0 feet when comparing to current readings. As a result, the record stage of 36.78 feet has been adjusted to 65.78 feet to reflect this change in flood stage.
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      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.
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      Page last modified: 6-Nov-2019 2:45 PM
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      Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.
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