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Weather Forecast Office Midland/Odessa, TX

West Gulf River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (CST)

Datum: Not Available

Metadata

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 12 hours into the future from the forecast issuance time.

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

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

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	19
Moderate Flood Stage:	17
Flood Stage:	15
Action Stage:	12
Low Stage (in feet):	-9999

Historic Crests
(1) 28.40 ft on 09/30/1978
(2) 27.27 ft on 09/20/2008
(3) 26.38 ft on 10/03/1990
(4) 24.70 ft on 09/27/1958
(5) 24.60 ft on 10/03/1932
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 22.00 ft on 06/03/2019
(2) 15.15 ft on 09/24/2017
(3) 15.38 ft on 05/22/2017
(4) 15.14 ft on 07/22/2013
(5) 12.45 ft on 08/16/2010
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 01/01/1963

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:16

	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
28.4	the river reaches record stage (1978). Major flooding begins upstream in Cottonwood Campground at Castolon. Most park roads near the river flood.
19	the river reaches major flood stage. Flooding begins to occur upstream in Cottonwood Campground at Castolon, as stages at each location are practically synonymous. Moderate lowland flooding begins at the gage site, but no damage occurs. The gage is inaccessible, as River Road is impassable at several locations.
15	flood stage is reached. Moderate lowland flooding begins. Roads that lead to Cottonwood Campground and River Road may flood. Stages are practically synonymous with the gage at Cottonwood Campground at Castolon (CSTT2), and therefore represent the reach from Santa Elena Canyon through Cottonwood Campground, where damage may occur. Cattle also graze in the lowlands, and may be threatened.
12	the river reaches bankfull, minor lowland flooding occurs, and no significant damage is expected.
Photos (1) Looking upstream (2) Gage house (3) Gage house & staff gage (4) Gage house (5) Gage house (6) Looking downstream

About This Location

Latitude: 29.034722° N, Longitude: 103.390278° 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)	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	2045.3 ft	2060.3 ft	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 Johnson Ranch

Resources

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
Midland/Odessa Weather Forecast Office
2500 Challenger Drive
Midland, TX 79706
(432) 563-5006
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Page last modified: 1-Mar-2019 12:34 AM

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