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Albert S.
Cook Library
Cook Library
Research Guides
Geography & Environmental Planning
GIS Data: Maryland & Mid-Atlantic
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Geography & Environmental Planning
Gateway to Geography and Environmental Planning, with Cook Library resources and publicly available sources of GIS Data.
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Books & Journals
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GIS Interactive Maps & Data
GIS Data: Maryland & Mid-Atlantic
GIS Data: United States of America
GIS Data: World & International
Global Mapping Platforms
GIS - Software & Data Studio
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Carl Olson
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Maryland and Mid-Atlantic States
DE Spatial Data Clearinghouse
Searchable database of Delaware GIS data.
GIS Data - FirstMap Delaware
Delaware GIS layers, providing timely and authoritative geographic information for the state.
Maryland DNR MERLIN Database
Maryland natural resources and services for GIS applications.
Maryland iMap
Database of interactive maps and resources on the geography and environment of Maryland.
Maryland State Data Center
Data, statistics, interactive maps, and dashboards for Maryland.
MEDUSA: Maryland's Cultural Resources
Maryland database of architectural and archaeological sites.
Pennsylvania Geospatial Data Clearinghouse
Data, maps and dashboards for Pennsylvania.
Virginia GIS Clearinghouse
Portal to social, economic and environmental data for Virginia state.
West Virginia GIS Clearinghouse
VA Geospatial Services
State of Virginia's main portal for geographic data.
Maryland Counties
Allegany County MD GIS Online
Interactive mapping applications for Allegany County, Maryland
Anne Arundel County Maps & GIS Data
Maps and data for Anne Arundel County, Maryland
Open Baltimore Data Portal
Baltimore County Open GIS Data
Local GIS data for Baltimore County, Maryland.
Calvert County MD GIS Portal
Environmental and emergency response mapping for Calvert County, Maryland.
Caroline County GIS Maps
District map of Caroline County, Maryland
Carroll County MD GIS & Maps
Cecil County Geographic Information Systems
Charles County MD Mapping Services
Published maps and data portal of Charles County, Maryland.
Dorchester County, MD Maps & GIS Data
Frederick County MD GIS
GIS and public safety data for Frederick County, Maryland.
Garrett County MD Geographic Information System
Interactive planning and zoning map for Garrett County, Maryland
Harford County MD Mapping Applications
Howard County MD Data
Geographic data files about Howard County, Maryland
Kent County DE Online Mapping Utility
Interactive, multi-layer map of Kent County, Delaware.
Montgomery County MD GIS & Mapping
Prince George's County Geographic Information Systems
GIS data and links to data for the national capitol region.
Queen Anne's County Geographic Information Systems
Maps and data to support Queen Anne's County, Maryland.
Somerset County MD Online Maps
St. Mary's County Geographic Information Systems
Talbot County MD Interactive Maps
Interactive maps for city planning and other interests for Talbot County, Maryland.
Washington County GIS Data & Maps
Wicomico County Map Room
Worcester County Geographic Information Systems
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