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 Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

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 (CST) Datum: NGVD29 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 Calallen are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 8.5 Moderate Flood Stage: 7.5 Flood Stage: 7 Action Stage: 6 Low Stage (in feet): -9999 Historic Crests (1) 16.00 ft on 09/24/1967 (2) 12.97 ft on 09/15/2002 (3) 12.24 ft on 07/18/2002 (4) 10.63 ft on 07/16/2007 (5) 9.53 ft on 06/26/1987 (6) 9.25 ft on 06/11/1987 (7) 9.24 ft on 10/24/2003 (8) 9.00 ft on 07/12/2002 (9) 8.99 ft on 10/20/1984 (10) 8.94 ft on 05/25/1992 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 6.10 ft on 10/02/2021 (2) 6.81 ft on 07/10/2021 (3) 6.83 ft on 07/08/2021 (4) 6.00 ft on 06/05/2021 (5) 6.23 ft on 05/20/2021 (6) 6.80 ft on 05/19/2021 (7) 5.79 ft on 09/11/2020 (8) 7.20 ft on 11/14/2018 (9) 8.28 ft on 11/05/2018 (10) 7.04 ft on 10/18/2018 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

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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12	Widespread long-lived residential flooding of hundreds of homes above Calallen occurs. This requires residents to be evacuated. Roads into the flood prone areas flood for miles, cutting off large residential areas for weeks. Massive flooding of roads near and around Calallen. Subdivisions evacuated include: County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres, and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park flood.
9.5	Residents are isolated upstream on the west side of the river for as much as six weeks. Widespread lowland flooding occurs, requiring evacuations. This includes the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park are inundated, and roads near the parks are flooded.
9	Widespread lowland flooding occurs, closing roads and cutting off many residences at times for weeks. Flooding of roads and residential areas near Calallen is widespread. Evacautions are required for the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park will are inundated.
8.5	Major lowland flooding occurs. Roads flood through residential areas, cutting off homes near Calallen at times for weeks. Evacuations are required in the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park is flooded, and Labonte Park is inundated.
8.19	Roads flood in residential areas, cutting off homes near Calallen, and requiring evacuations. This includes the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park will also flood, with a good part of the park under water. Roads near the park and river are closed, and the soccer field is inundated.
7.7	Roads flood through the lowest residential areas, cutting off homes near Calallen, and requiring evacuations. This includes the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park will also flood, with a good part of the park under water. Roads near the park and river are closed.
7.5	Moderate lowland flooding occurs. Roads flood through the lowest residential areas...cutting off homes near Calallen, and requiring evacuations. This includes the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Hazel Bazemore Park and Labonte Park will also flood.
7	Minor lowland flooding occurs. The flow above Calallen impacts residential areas in the following subdivisions, Sandy Hallow, Los Dos Palomas, Los Escondido, and along Oak Lane in Rio Encinos. Roads in some of the lowest residential areas near Calallen are threatened, including the subdivisions of County Road 73 in Riverside Addition 1 and 2, Riverside Annex, Twin Lakes, Riverside Acres and homes in the Nueces River Estates and Lindgreen Estates. Flow gets into the lowest areas of Labonte Park.
6	Overbank conditions occur with no significant impacts.
Photos (1) 2002 Flood: Areal View of Calallen Floodplain (2) Flooding Around Calallen July 2002 - 2 (3) Flooding Around Calallen July 2002 (4) Floodplain During July 2002 (5) More Flooding During July 2002 (6) Labonte Park Flooding During July 2002 (7) July 2002 Flood: Labonte Park (8) July 2002 Flood: Labonte Park (9) 2002 Flooding: Nueces River Flood Plain (10) Portion of Nueces River At Calallen (11) Homes on Stilts Near Calallen (12) Homes in the Calallen Area Subjet to Flooding - 2 (13) Homes Around Calallen Area (14) Home on Stilts in Calallen Area

About This Location

Latitude: 27.883000° N, Longitude: 97.625000° 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 0.84 ft 7.84 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 Calallen

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