Inundation Mapping Science in Texas
Science Center Objects
Flood-inundation maps created by the USGS Texas Water Science Center (TXWSC) allow users to view the possible extent and depth of flooding during a specific type of storm event. Flood inundation maps may be created using hydraulic models or by using data collected after a storm event (high-water marks). Visit the links below for more information on our data and science.
INUNDATION MAPPING SCIENCE CAPABILITIES
TXWSC has expertise in a wide variety of inundation mapping science applications, including, but not limited to:
- Modeling rivers and streams using hydraulic packages such as HEC-RAS
- Developing decision support systems
- Marking and surveying high-water marks
- Determining peak discharge from indirect measurements
- Analyzing flood-peak magnitudes and their statistical probabilities at selected locations
- Analyzing high-water mark locations and elevations using geographic information system (GIS) to produce flood-inundation maps
- Developing web-mapping applications for inundation extent and depth
Find out more about TXWSC flood-response science expertise in this printable information sheet.
Surveying on the Medina River.
CURRENT INUNDATION MAPPING SCIENCE
Bandera Flood Early Warning Tool
InFRM Flood Inundation Mapping
Post Hurricane Harvey Assessment
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Date published: May 29, 2018Status: ActiveInFRM Flood Inundation Mapping
The purpose of this flood inundation mapping effort will be to meet the needs of real-time emergency managers by bridging the gap between the NWS's river forecasts and FEMA's available hydraulic modeling and mapping.
Contacts: Kristine Blickenstaff -
Date published: May 29, 2018Status: ActivePost Hurricane Harvey Assessment
In the immediate aftermath of Hurricane Harvey related flooding, the USGS Texas Water Science Center and the Federal Emergency Management Agency (FEMA) initiated a cooperative study to evaluate the magnitude of the flood, determine the probability of occurrence, and map the extent of the flood in Texas.
Contacts: Kristine Blickenstaff -
Date published: May 25, 2018Status: ActiveBandera Flood Early Warning Tool
Risk of future flooding events in the Bandera County area highlights a critical need for a flood warning system. As part of the flood warning system, a tool set is needed to enhance the communication of flood risk and provide emergency managers additional information necessary to better mitigate the impacts of flooding. The USGS Texas Water Science Center is helping build this tool set...
Contacts: Cassi L Crow
Characterization of peak streamflows and flood inundation of selected areas in southeastern Texas and southwestern Louisiana from the August and September 2017 flood resulting from Hurricane Harvey
Hurricane Harvey made landfall near Rockport, Texas, on August 25, 2017, as a Category 4 hurricane with wind gusts exceeding 150 miles per hour. As Harvey moved inland, the forward motion of the storm slowed down and produced tremendous rainfall amounts over southeastern Texas, with 8-day rainfall amounts exceeding 60 inches in some locations,...
Watson, Kara M.; Harwell, Glenn R.; Wallace, David S.; Welborn, Toby L.; Stengel, Victoria G.; McDowell, Jeremy S.-
Date published: July 9, 2018Data Used to Characterize Peak Streamflows and Flood Inundation Resulting from Hurricane Harvey
In the immediate aftermath of Hurricane Harvey, the USGS and FEMA worked together to document the storm event in southeastern Texas and southwestern Louisiana. This data release contains the flood inundation polygons, flood-depth rasters, mapped boundaries, and high-water mark (HWM) locations for the selected river basins...
Attribution: Oklahoma-Texas Water Science Center