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Hydrograph River at a Glance Download
Rio Grande at Castolon
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Tabular Data (UTC)
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Datum: Not Available
NOTE: Gauge readings unavailable - awaiting repair.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Rio Grande at Castolon are issued as needed during times of high water, but are not routinely available.

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Upstream Locations Upstream Gauge Downstream Gauge Downstream Locations
Flood Categories (in feet)
Major Flood Stage:24
Moderate Flood Stage:19
Flood Stage:15
Action Stage:13

Historical Crests
(1) 24.70 ft on 09/27/1958
(2) 24.60 ft on 10/03/1932
(3) 23.25 ft on 09/22/2008
(4) 21.30 ft on 09/30/1978
(5) 21.15 ft on 09/21/1974
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Low Water Records
Zoom Level: 16
Gauge Location
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
24.7 the river reaches record stage (1978), and results in major flooding of Cottonwood Campground. All area roads are submerged.
19 the river reaches moderate flood stage, and begins flooding Cottonwood Campground. The river inundates the restrooms upstream at Santa Elena Canyon parking lot. The river begins to close all area roads.
15 the river reaches minor flood stage, and lowland flooding begins. The river begins to flood the road between Santa Elena Canyon and Cottonwood Campground in Big Bend National Park. The river begins to flood the parking lot at Santa Elena Canyon, and cut off the nature trail into the canyon. Campers in Cottonwood Campground need to prepare for possible evacuations.
13 the river reaches bankfull, and no significant damage is expected.
About This Location Collapse

Latitude: 29.137778° N, Longitude: 103.524444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 15 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 2169 ft 2184 ft  

Current/Historical Observations:

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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.
NWS Information
National Weather Service
Midland/Odessa Weather Forecast Office
2500 Challenger Drive
Midland, TX 79706
(432) 563-5006
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Page last modified: 8-Apr-2014 7:37 AM
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