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Federal
Toxics Release Inventory (TRI)
U.S. Environmental Protection Agency —
The Toxics Release Inventory (TRI) is a dataset compiled by the U.S. Environmental Protection Agency (EPA). It contains information on the release and waste... -
State
MD COVID-19 - Cases by County
State of Maryland —
Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The... -
Federal
TIGER/Line Shapefile, Current, State, Maryland, Place
U.S. Census Bureau, Department of Commerce —
This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information... -
Federal
Fisheries One Stop Shop Public Data 2009 - Present
National Oceanic and Atmospheric Administration, Department of Commerce —
The purpose of the Fisheries One-Stop-Shop (FOSS) is to make fisheries dependent information readily available to fisheries managers, scientists and the American... -
State
MD iMAP: Maryland Traffic Cameras - Traffic Cameras (CHART)
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This dataset provides the locations of Traffic Cameras in Maryland from the... -
Federal
EnviroAtlas Estimated Percent Green Space Along Walkable Roads Web Service
U.S. Environmental Protection Agency —
This EnviroAtlas dataset estimates green space along walkable roads. Green space within 25 meters of the road centerline is included and the percentage is based on... -
Federal
EnviroAtlas One Meter Resolution Urban Land Cover Data (2008-2012) Web Service
U.S. Environmental Protection Agency —
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas ). The EnviroAtlas One Meter-... -
State
MD iMAP: Maryland Finfish - Tidal (Adult Habitat)
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This data layer shows Adult Finfish habitat areas in Maryland. Last Updated:... -
Federal
TIGER/Line Shapefile, Current, State, Maryland, Census Tract
U.S. Census Bureau, Department of Commerce —
This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information... -
State
MD iMAP: Maryland Watersheds - 8 Digit Watersheds
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSUB8) is a statewide digital watershed file. It depicts the... -
State
Maryland Road Closures
State of Maryland —
Road Closures in the State of Maryland provided by Maryland Department of Transportation Coordinated Highways Action Response Team (MDOT CHART). Road Closures created... -
State
MD iMAP: Maryland Research Reserves - Chesapeake Bay National Estuarine Research Reserves
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The National Estuarine Research Reserve System (NERRS) is a network of protected... -
Federal
EnviroAtlas - Baltimore, MD - 51m Riparian Buffer Vegetated Cover
U.S. Environmental Protection Agency —
This EnviroAtlas dataset describes the percentage of a 51-m riparian buffer that is vegetated. In this community, vegetated land is defined as Trees & Forest,... -
State
MD iMAP: Maryland Archived MD Environmental Trust 2010 Land Acquisitions Detail
State of Maryland —
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. The Maryland Environmental Trust (MET) is a statewide local land trust governed... -
State
MD iMAP: Maryland Wetlands - Wetlands Polygon (Special State Concern)
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. In Maryland certain wetlands with rare - threatened - endangered species or... -
State
MD COVID-19 - Cases by Gender Distribution
State of Maryland —
Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The... -
State
MD COVID-19 - Testing Volume
State of Maryland —
NOTE: This dataset is no longer being updated as of 4/27/2023. It is retired and no longer included in public COVID-19 data dissemination. See this link for more... -
State
MD iMAP: Maryland US National Grid Zone 18S - US National Grid Zone 18S (10000m)
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This layer is the MGRS 10 - 000m grid that covers Zone 18S which covers... -
State
MD iMAP: Maryland Gauges - Tide Gauge Locations
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This data layer shows the locations of NOAA tide gauges in Maryland....