DISASTERS_202507_FLOOD_TX/202507

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Service Description: Dates of Images:July 9, 2025Date of Next Image:None ExpectedSummary:These maps show the results of a machine learning classification applied to UAVSAR data to identify open water flooding and inundation under tree canopy. Colored areas in the image show detected flooding, where the color shows the type of landcover which was flooded (see legend below). Non-flooded areas are transparent. The classification uses a U-Net machine learning algorithm which was trained using UAVSAR data from previous flood events. UAVSAR provides polarimetric synthetic aperture radar data from which different types of scattering mechanisms can be observed, which provides information on the type of flooding. For example, flooding underneath vegetation produces strong double-bounce scattering from the water surface and tree trunks. However, strong double-bounce scattering from urban areas aligned with the radar viewing direction, such as in Austin, TX, can produce erroneous classifications. Non-flooded vegetation is generally dominated by volume scattering from the forest canopy. In comparison, open water flooding exhibits weak radar returns in all polarizations.Suggested Use:Classified Images:<ul><li>Blue = Open Water</li><li>Yellow = Flooded Developed</li><li>Green = Flooded Vegetation</li><li>Orange = Flooded Crop</li></ul>Satellite/Sensor:UAVSAR airborne L-band synthetic aperture radar (SAR) aboard a NASA Gulfstream C-20A jet.Resolution:10 metersCredits:UAVSAR data courtesy of NASA/JPL-CaltechEsri REST Endpoint:See URL section on right side of the pageWMS Endpoint:<a href='https://gis.earthdata.nasa.gov/gis05/services/DISASTERS_202507_FLOOD_TX/202507_UAVSAR/MapServer/WMSServer' target='_blank'>https://gis.earthdata.nasa.gov/gis05/services/DISASTERS_202507_FLOOD_TX/202507_UAVSAR/MapServer/WMSServer</a>Data Download:<a href='https://uavsar.jpl.nasa.gov/cgi-bin/download-files.pl' style='color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;'>https://uavsar.jpl.nasa.gov/cgi-bin/download-files.pl</a>

Map Name: UAVSAR

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Service Item Id: e58fef3c48494713945ec8845f7c2ae6

Copyright Text: NASA/JPL-Caltech UAVSAR Team

Spatial Reference: 4326 (4326) LatestVCSWkid(0)

Single Fused Map Cache: false

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Units: esriDecimalDegrees

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

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Supports Dynamic Layers: true

MaxRecordCount: 2000

MaxSelectionCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true

Child Resources: Info Dynamic Layer

Supported Operations: Export Map Identify QueryLegends QueryDomains Find Return Updates

DISASTERS_202507_FLOOD_TX/202507_UAVSAR (MapServer)