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University
National Park Boundaries
Earth Data Analysis Center, University of New Mexico —
National Park Service unit boundaries. -
Federal
National Bridge Inventory
Federal Geographic Data Committee —
The National Bridge Inventory dataset is as of June 20, 2025 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation... -
Railroads
District of Columbia —
Centerlines of railroads or Metrorail are captured. The line is at the midpoint between each rail line. Hidden features due to tunnels, overpasses, or bridges are... -
Small Area Plans
District of Columbia —
This dataset contains areal locations for Major Area Pans as established by the DC Office of Planning. Below are brief descriptions about each area. 1. Benning Road:... -
Potential Landmarks
District of Columbia —
This dataset contains Historic Landmarks (by structure) officially designated by the District of Columbia. This is a consolidated collection of structures with... -
Sidewalks 2021
District of Columbia —
All public walkways are captured. Sidewalks do not overlap other feature classes unless they are hidden under a bridge or overpass. Cement pads around public swimming... -
Railroads 2019
District of Columbia —
Railroad. The dataset contains polylines representing planimetric railroads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of... -
Historic Landmarks
District of Columbia —
This dataset contains Historic Landmarks (by structure) officially designated by the District of Columbia. This is a consolidated collection of structures with... -
Roads
District of Columbia —
Road edges are defined as the edge of the improved surface including the improved shoulder but do not include the unimproved shoulder, only the travel part of the... -
Railroads 2015
District of Columbia —
Railroad. The dataset contains polygons representing planimetric railroads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the... -
Roads 2008
District of Columbia —
Roads. The dataset contains polygons representing planimetric roads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief... -
Traffic Barrier 2017
District of Columbia —
Traffic Barrier. The dataset contains polylines representing planimetric barriers, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office... -
Historic Landmarks Points
District of Columbia —
This dataset contains Historic Landmarks (by structure) officially designated by the District of Columbia. This is a consolidated collection of structures with... -
State
Opportunity Zones
State of Connecticut —
These points are directly sourced from the National Historic Landmarks, National Register, State Register, Local Historic Districts, Local Historic Places, Historic... -
State
Connecticut Railroads
State of Connecticut —
Connecticut Railroads is a 1:24,000-scale, feature-based layer that includes railroad features on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle... -
Hydrography Lines 2021
District of Columbia —
This layer contains hydrography such as streams, rivers, and other linear hydrography features. Hidden hydrography, inferred drainage connectors, or culverts connect... -
Recreation Facilities 2015
District of Columbia —
Recreation Areas. The dataset contains polygons representingrecreation areas, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of... -
Swimming Pools 2013
District of Columbia —
Swimming Pool. The dataset contains polygons representing planimetric Swimming Pools, created as part of the DC Geographic Information System (DC GIS) for the D.C.... -
Building Footprints 2017
District of Columbia —
Building. The dataset contains polygons representing planimetric buildings, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the...