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Core Based Statistical Areas (National)
The Core Based Statistical Area (CBSA) dataset is August 9, 2019, and is part of the USDOT/BTS's National Transportation Atlas Database (NTAD). The TIGER/Line Files are... -
Airports (National) - National Geospatial Data Asset (NGDA) Airports
The Airports dataset includes all official and operational aerodromes June 20, 2019 and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation... -
EPA Regional Boundaries (EPA.EPA_REGIONS) GIS Layer
Each EPA Regional Office is responsible within its states for the execution of the Agency's programs. EPA has ten regional offices, each of which is responsible for several... -
Geodetic Control Information on Passive Marks: Horizontal and Vertical...
This data contains a set of geodetic control stations maintained by the National Geodetic Survey. Each geodetic control station in this dataset has either a precise...