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Floods Data Access and Tools
From discovery to visualization, data tools such as the Dartmouth Flood Observatory (DFO), HYDrologic Remote Sensing Analysis for Floods (HYDRAFloods), and the Spatial Data Access Tool (SDAT) guide users in making the most of flood data.
Floods Datasets
| Dataset Sort descending | Version | Platform | Instrument | Temporal Extent | Spatial Extent | Spatial Resolution | Data Format |
|---|---|---|---|---|---|---|---|
| VIIRS/JPSS1+JPSS2 Global Flood Product L3 NRT 250m 2-day GeoTIFF | 2 | NOAA-20, NOAA-21, Suomi-NPP | VIIRS | 2026-03-04 to Present |
N: 90 S: -90 E: 180 W: -180 |
250 Meters x 250 Meters | GeoTIFF |
| VIIRS/JPSS1+JPSS2 Global Flood Product L3 NRT 250m 3-day GeoTIFF | 2 | NOAA-20, NOAA-21, Suomi-NPP | VIIRS | 2026-03-04 to Present |
N: 90 S: -90 E: 180 W: -180 |
250 Meters x 250 Meters | GeoTIFF |
| VIIRS/JPSS1+JPSS2 Hourly Cumulative L3 Global Flood Composite 250m Linear Lat Lon Grid - NRT | 2 | NOAA-20, NOAA-21, Suomi-NPP | VIIRS | 2025-04-15 to Present |
N: 90 S: -90 E: 180 W: -180 |
250 Meters x 250 Meters | HDF5 |
Featured Floods Observation Method: Sentinel-1 C-SAR
The Synthetic Aperture Radar (SAR) aboard the ESA (European Space Agency's) Sentinel-1A/B satellites provides continuous all-weather, day-and-night land imagery. SAR images can be used to see through clouds and vegetation to identify flooded areas caused by seasonal changes, storms, and other events.
Sentinel-1 synthetic aperture radar (SAR) data are used to create maps of surface water extent for research, planning, and disaster response.
The Observational Products for End-Users from Remote Sensing Analysis (OPERA) Dynamic Surface Water eXtent (DSWx) product suite, a Satellite Needs Working Group solution, maps spatial extent of surface water.
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