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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 - Confirmed Deaths by Age Distribution
State of Maryland —
Note: Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated.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... -
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Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated.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
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
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... -
State
MD COVID-19 - Total Cases Statewide
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Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated.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
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
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... -
Federal
TIGER/Line Shapefile, Current, State, Maryland, Unified School Districts
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 COVID-19 - Total Deaths in Congregate Facility Settings (Nursing Homes, Assisted Living, State and Local Facilities and Group Homes +10 Residents) by County
State of Maryland —
This layer has been DEPRECATED (last updated12/1/2021). This was formerly a weekly update. Summary The Outbreak-Associated Cases in Congregate Living data dashboard... -
State
MD COVID-19 - Contact Tracing Cases Reported Employment
State of Maryland —
NOTE: THIS LAYER HAS BEEN DEPRECATED (last updated 5/31/2022). This was formerly a weekly update. Summary The number of cases interviewed who had a completed answer... -
Federal
Chesapeake & Ohio Canal National Historical Park Small-Scale Base GIS Data
Department of the Interior —
This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources... -
State
MD iMAP: Maryland Chesapeake Bay Dead Zones - Chesapeake Bay Dead Zones
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This dataset contains areas in the Chesapeake Bay with low amounts of oxygen.... -
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
MD iMAP: Maryland Recreational Uses - Winter Sports
State of Maryland —
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. These baseline recreational use data will inform planning efforts being... -
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... -
State
MD iMAP: Maryland Hazard Reduction by Habitats
State of Maryland —
This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov. Each point in Coastal Resiliency Assessment Shoreline Points represents a 250... -
Federal
EnviroAtlas Community Block Group Metrics 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). This web service includes... -
State
MD iMAP: Maryland Protected Lands - DNR Owned Properties and Conservation Easements
State of Maryland —
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The Maryland Department of Natural Resources (DNR) manages over 446 - 000 acres...