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Southwestern USA earthworks inventory includes point features for berms, tanks, and other structures built for water diversion and retention. The dataset was created by researchers from the USDA-ARS Southwest Watershed Research Center and the University of Arizona using 1-meter LiDAR-derived DEM hillshades and aerial imagery. It was last updated in April 2026.
Primary data is in ESRI Shapefile format (.shp) with supporting files; a GeoJSON version is also provided. 1-meter DEM source data must be sourced separately from the USGS National Map.