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National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
USGS Transportation Overlay Map Service from The National Map
The USGS Transportation service from The National Map (TNM) is based on TIGER/Line data provided through U.S. Census Bureau and road data from U.S. Forest Service. Some of the... -
Bridge and Tunnel Entrances 2008
Bridges and Tunnels. The dataset contains polygons representing planimetric Bridges and Tunnels, created as part of the DC Geographic Information System (DC GIS) for the D.C.... -
National Tunnel Inventory
The National Tunnel Inventory dataset was compiled on September 02, 2025 and published on August 26, 2025 from the Federal Highway Administration (FHWA) and is part of the U.S....