Data and code for: Volumetric Change Detection with SfM Photogrammetry from Rapid-Response Aerial Imagery after Hurricane Helene

Derived change products, shifted surfaces, processing records, and processing code for two Civil Air Patrol (CAP) flights over western North Carolina after Hurricane Helene: A0046B (Swannanoa Valley) and A0069AR (Hickory Nut Gorge). The record holds 1 m structure-from-motion surface and terrain models in NAVD88, bias-corrected DEMs of difference against the 2017 LiDAR, local level-of-detection rasters, and the significant-change rasters, plus the Metashape run logs, batch scripts, processing reports, per-flight configuration files, and the processing code (helene-topographic-change v1.0.0). The classified point clouds, pre-shift surfaces, and orthomosaics are archived on the OpenTopography Community Dataspace. Imagery courtesy of Civil Air Patrol, U.S. Air Force Auxiliary.