Rio Grande at Castolon

Last updated: Jul 18, 2025, 5:05 AM UTC
No watches, warnings or advisories are in effect for this area.

Flood Impacts 🅘

  • 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.

Gauge Info

Coordinates 29.1380, -103.525
RFC WGRFC
State TX
WFO MAF
County Brewster
Data Provider(s)
US Geological Survey US Geological Survey
USGS 08374550

Gauge Location

Recent Crests

1. 19.35 ft on 07-04-2025
2. 17.09 ft on 07-02-2025
3. 15.98 ft on 06-30-2025
4. 17.74 ft on 09-03-2024
5. 16.16 ft on 07-23-2024

Historic 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

Vertical Datum Table

type NAVD88
major Flooding 2133.60 ft
moderate Flooding 2128.60 ft
minor Flooding 2124.60 ft
action 2122.60 ft
Latest Value 2113.42 ft
Gauge Zero 2109.60 ft

Gauge Photos

No Images Found

Probability Information

No Images Available

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.

WFO Information

Weather Forecast Office
Midland/Odessa
2500 Challenger Drive
Midland, TX 79706
Official Homepage