Address-Level Evacuation Mapping from Multi-Frequency, Multi-Polarization SAR
Click the button below to access our interactive project - the DryPath map! DryPath isn't just a map — it's a lifeline
DryPath isn't just a map — it's a lifeline. We fuse measured rainfall (NASA GPM IMERG) with Sentinel-1 radar imagery (C-band, VV/VH; L-band where available), which works day and night and looks straight through clouds. When optical sensors go blind in storms, the radar stays available—helping pinpoint where water truly stands versus where the soil is simply wet.
From there, the output is practical: our system assigns one of four alert levels to each address and generates safe routes that avoid flooded roads, refreshing automatically as new data arrives from NASA's SAR satellites. Our area of interest is in Kerr County (Kerrville, Texas, Sept–Oct 2025). Open data, transparent methods, and a single goal—turn hours of evacuation delay into minutes, so people can leave danger sooner, and get to safety with confidence.
In order to use our DryPath map, all that is needed is an address. When there is a need for evacuation, type in an address, and nearby shelters will appear on the map, marked green. A shelter may be a building, or just a tall hill that will not get flooded. After choosing a shelter, our map will provide safe routes for passage, and the user may choose whichever best suits them. Every route is unique, placed around the predicted flooded areas.
Explore our comprehensive presentation about DryPath
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