Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Corpus Christi, TX

West Gulf River Forecast Center

Special Weather Statement

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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Printable Image About this graph Tabular Data (UTC) Tabular Data (CDT) Datum: Not Available Metadata

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 Nueces River at Mathis 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: 28 Moderate Flood Stage: 26 Flood Stage: 25 Action Stage: 16 Low Stage (in feet): -9999 Historic Crests (1) 48.70 ft on 09/24/1967 (2) 41.00 ft on 09/20/1919 (3) 39.03 ft on 09/16/2002 (4) 38.38 ft on 07/12/1942 (5) 38.12 ft on 07/17/2002 (6) 37.00 ft on 06/18/1935 (7) 35.30 ft on 07/12/1932 (8) 35.10 ft on 11/23/1930 (9) 33.80 ft on 01/24/1968 (10) 33.06 ft on 03/01/1958 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 5.88 ft on 10/02/2021 (2) 12.47 ft on 07/09/2021 (3) 7.49 ft on 06/04/2021 (4) 28.09 ft on 11/01/2018 (5) 26.21 ft on 06/18/2015 (6) 25.15 ft on 06/09/2015 (7) 27.13 ft on 06/02/2015 (8) 29.40 ft on 05/22/2015 (9) 3.25 ft on 03/22/2015 (10) 3.45 ft on 03/18/2015 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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48.7	Flood of record - Septemeber 24, 1967 - remnants of Hurricane Beulah (138,000 cfs).
43.5	Massive life threatening flooding occurs, and severely damages residential areas below Bluntzer to Calallen. Major flooding of the flood plain below Lake Corpus Christi to below Bluntzer, floods roads and bridges near the river. Livestock are cut off and potentially drowned. Just below the dam, water is over the Highway 359 bridge around the right end.
29.34	Major lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for several weeks.
28	Major lowland flooding occurs, causing widespread evacuations downstream above Calallen. The west bank residents below Bluntzer may be cut off for 4 to 6 weeks.
27	Flow moves into a secondary channel, 700 feet left of main channel, resulting in two channels. These channels merge at 43.5 feet.
26	Moderate lowland flooding occurs. Many homes downstream between Bluntzer and Calallan become flooded, with residents possibly cut off for weeks.
25	Minor lowland flooding occurs. Flow escapes secondary banks of the main channel. There is widespread flooding of the flood plain downstream, between Bluntzer and Calallen, cutting off many homes and residential areas for days and possibly weeks.
20	Overbank conditions continue. Residents downstream near Bluntzer may become isolated.
17	Many homes in flood prone areas downstream above Calallen are cut off and surrounded by water.
16	The river reaches bankfull stage. Short peak releases will flood homes near Calallen.
13	Sustained flow will isolate homes downstream near Calallen.
12	Flow cuts off the lowest homes downstream above Calallen.

About This Location

Latitude: 28.038056° N, Longitude: 97.860000° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 25 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 26.53 ft 51.53 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 Mathis

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Rainfall Frequency Atlas Maps Weather Prediction Center West Gulf River Forecast Center (WGRFC) Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Guadalupe-Blanco River Authority Nueces River Authority International Boudary & Water Commission San Antonio River Authority Snow Information

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 Corpus Christi Weather Forecast Office 426 Pinson Drive Corpus Christi, TX 78406-1803 (361) 289-0959 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities