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Federal
Navigable Waterway Network Lines NGDA
Department of Transportation —
The Navigable Waterway Network Lines dataset is periodically updated by the United States Army Corp of Engineers (USACE) and is part of the U.S. Department of... -
Federal
Navigable Waterway Network Lines
Federal Geographic Data Committee —
The Navigable Waterway Network Lines dataset is periodically updated by the United States Army Corp of Engineers (USACE) and is part of the U.S. Department of... -
State
Navigable Waterways
State of Maryland —
The National Waterway Network is a comprehensive network database of the nation's navigable waterways. The data set covers the 48 contiguous states plus the District... -
Federal
Marine Highways
Department of Transportation —
The Marine Highways dataset was created on June 15, 2016 and was updated on September 10, 2025 by the U.S. Maritime Administration (MARAD) and is part of the U.S.... -
State
MD iMAP: Maryland Transit - WMATA Metro Stops
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Metro Stations (regional). The dataset contains points representing... -
State
MD iMAP: Maryland Transit - MARC Train Stops
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Maryland Tranist Administration MARC Rail Stops. This data is based upon... -
State
MD iMAP: Maryland Transit - Light Rail Lines
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Maryland Transit Administration light rail routes. See... -
State
MD iMAP: Maryland Transit - MTA Bus Lines
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Maryland Transit Administration Bus Routes including Local Bus - Commuter... -
State
MD iMAP: Maryland Transit - WMATA Metro Lines
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Metro Lines (regional). The dataset contains locations and attributes of... -
State
Federally Navigable Waterways in Oregon
State of Oregon —
Following is a list of Oregon waterways that have been determined to meet the federal test of navigability for purposes of State ownership of the underlying submerged... -
Federal
Navigable Waterway Network Nodes NGDA
Department of Transportation —
The Navigable Waterway Network Nodes dataset is periodically updated by the United States Army Corp of Engineers (USACE) and is part of the U.S. Department of... -
State
MD iMAP: Maryland Transit - Light Rail Parking
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This data shows the locations of MTA's light rail parking facilities. Last... -
Federal
Last of the Wild Project, Version 3 (LWP-3): 2009 Human Footprint, 2018 Release
National Aeronautics and Space Administration —
The 2009 Human Footprint, 2018 Release provides a global map of the cumulative human pressure on the environment in 2009, at a spatial resolution of ~1 km. The human... -
Federal
National Ocean Service (NOS) Cartographic Codes for Bottom Character in the Gulf of Maine region (NOSGOM shapefile)
Department of the Interior —
These data were collected by the National Ocean Service (NOS, formerly the U.S. Coast and Geodetic Survey) for the purpose of charting the coastal waters and... -
State
Granted Lands
State of California —
SummaryThis INCOMPLETE dataset illustrates California's Granted public trust lands. Parcel digitization is currently UNDER DEVELOPMENT and approximately 61% complete... -
Federal
Lithologic Descriptions of Bottom Sediments for the New England coast and the Gulf of Maine region (SMITHSONIAN shapefile)
Department of the Interior —
These data, which comprise part of the Smithsonian Institution Master Sediment data file, were abstracted by the staff of the Smithsonian Institution from materials... -
Federal
CO-OPS Air Gap Observations from Various Bridges within the United States and Its Territories
National Oceanic and Atmospheric Administration, Department of Commerce —
The Center for Operational Oceanographic Products and Services (CO-OPS) of the National Ocean Service (NOS), an organizational element of NOAA, operates and maintains... -
Federal
CO-OPS Conductivity Observations from Coastal Stations within the United States and Its Territories
National Oceanic and Atmospheric Administration, Department of Commerce —
The Center for Operational Oceanographic Products and Services (CO-OPS) of the National Ocean Service (NOS), an organizational element of NOAA, operates and maintains... -
State
MD iMAP: Maryland Transit - Navigable Waterways
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The National Waterway Network is a comprehensive network database of the... -
State
MD iMAP: Maryland Transit - WMATA Metro Bus Stops
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Metrobus provides more than 400 - 000 trips each weekday serving 11 - 500...