Earthworks inventory across the southwestern USA

The inventory was completed by Dr. Mary H Nichols (USDA-ARS Southwest Watershed Research Center), Michelle Cavanaugh (USDA-ARS Southwest Watershed Research Center), and Dr. Haiqing Xu (University of Arizona) using 1-meter LiDAR derived Digital Elevation Model (DEM) hillshades where available and checked using aerial imagery. It is possible that some earthworks were missed due to structure size, topography, or other obstacles/limitations.1-meter DEM data can be sourced from the USGS National Map (Elevation Products) at: https://apps.nationalmap.gov/downloader/File details:Earthworks Inventory.shp – Point shapefile of earthworks features (berms, tanks, and other earthworks built on the landscape for water diversion, spreading, and/or retention) as observed from 1-meter LiDAR derived DEM hillshades where available and checked using aerial imagery.The following files support the .shp file:• Earthworks Inventory.dbf - mandatory file• Earthworks Inventory.shx - mandatory file• Earthworks Inventory.cpg• Earthworks Inventory.prj• Earthworks Inventory.sbn• Earthworks Inventory.sbxEarthworks Inventory.geojson – The same data held within Earthworks Inventory.shp in an open standard format.