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Weather Forecast Office Austin/San Antonio, TX

West Gulf River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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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 for the Pecos River at Pandale Crossing 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: 15 Moderate Flood Stage: 10 Flood Stage: 7 Action Stage: 5 Low Stage (in feet): -9999 Historic Crests (1) 43.90 ft on 06/28/1954 (2) 29.90 ft on 09/01/1974 (3) 17.00 ft on 05/31/1996 (4) 15.37 ft on 07/25/2004 (5) 11.73 ft on 05/10/2007 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 7.02 ft on 10/09/2018 (2) 11.73 ft on 05/10/2007 (3) 8.97 ft on 11/17/2004 (4) 15.37 ft on 07/25/2004 (5) 17.00 ft on 05/31/1996 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:16 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

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27	(8.2 meters), Life threatening major flooding occurs below Sheffield downstream to Amistad Reservoir. Flow at Pandale Crossing is over one third mile wide and two hundered thousand cfs. Flow inundates the channel bottom above Pandale to Amistad Reservoir and is life threatening to campers and river recreationists.
23	(7.0 meters), Major flooding is well into the flood plain and can wash campers, vehicles and gear downstream. Roads and crossings in the Pecos River flood plain and tributaries are extremely dangerous to motorists. The Pecos River at Pandale Crossing is near 1/3 mile wide.
19	(5.8 meters), The Pecos river at Pandale Crossing is over one quarter mile wide and extremely turbulent. Campers, river recreationists, and RVs camped near the river can easily be swept downstream as the major flood wave moving downstream causes very rapid rises.
15	(4.6 meters), Major flooding makes low water crossings along the Pecos River and tributaries potentially deadly. The flood wave moving downstream causes rapid rises dangerous to campers on the low banks below Sheffield to Amistad Reservoir. Autos and gear can be swept downstream.
10	(3.0 meters), Moderate flooding is well into the flood plain making secondary roads and crossings along the Pecos River and tributaries very dangerous to travel. Swimmers and tubers should leave the river as flow is dangerously turbulent. Campers vehicles and gear in the flood plain can be swept downstream.
7	(2.1 meters), Minor lowland flooding is a significant threat to swimmers, tubers and campers on the low banks of the Pecos River above Pandale to above Langtry.
5	Lowland flooding makes low water crossings at Pandale on the Pecos River and tributaries flooded and impassable.

About This Location

Latitude: 30.125000° N, Longitude: 101.572222° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 7 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 1555 ft 1562 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Rainfall Frequency Atlas Maps Weather Prediction Center 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 Lower Colorado River Authority Guadalupe Blanco River Authority San Antonio River Authority Edwards Aquifer Authority Nueces River Authority International Boundary and Water Commission Snow Information

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