National Park Service (NPS)

National Register of Historic Places

http://www.cr.nps.gov/nr/

US Fish & Wildlife Service (USFWS)

NWI Wetlands

http://www.nwi.fws.gov/

US Geologic Survey (USGS)

Mapping

http://www.usgs.gov/

US Census Bureau (USCB)

Census Tracts, Census Statistics

http://www.census.gov/

Army Corps. of Engineers (ACOE)

Permitting

http://www.usace.army.mil/

Federal Highway Administration

NEPA & SCEA Policy

http://www.fhwa.dot.gov/

US Environmental Protection Agency

Environmental Regulations/Data

http://www.epa.gov/

Maryland Department of Natual Resources (DNR)

Technology Toolbox data includes:  DNR Wetlands, NWI Wetlands, Wetlands of Special State Concern, Submerged Aquatic Vegetation, Sensitive Species Protection Areas, Floodplains, Chesapeake Bay Critical Area

http://www.dnr.state.md.us/

Maryland Office of Planning (MOP)

Priority Funding Areas, Property Boundary Information, Property Valuation, MD Property View

http://www.op.state.md.us/

Maryland Historic Trust (MHT)

MD Historical Trust Easements, MD Inventory of Historic Places, Archaeological Presence Grid, National Register of Historic Places

http://www2.ari.net/mdshpo/

Department of Agriculture

Agricultural Land Use Mapping and Regulatory Information

http://www.mda.state.md.us/

Maryland Department of Transportation

Statewide Information on Transportation Projects

http://www.mdot.state.md.us/

Maryland State Highway Administration

SCEA Policy and Project Specific Information

http://www.sha.state.md.us/

Department of Business and Economic Development

SocioEconomic Statistics

http://www.dbed.state.md.us/

Maryland Department of the Environment

State Regulatory Data and Policy

http://www.mde.state.md.us/

Local Government Planning in Maryland

Links to Local Governments

http://www.mdp.state.md.us/

Maryland Electronic Capital

Links to Local Governments and Statistics

http://www.mec.state.md.us/

Baltimore Metropolitan Council

Regional Planning Information

http://www.baltometro.org/

Washington Council of Governments

Regional Planning Information

http://www.mwcog.org/

Maryland State Government GIS Coordinating Committee

Coordinates GIS activities within Maryland State Government

http://www.msgic.state.md.us/

US Census Lookup

Searchable Census Databases

http://www.census.gov/

USGS  (National Mapping)

Various Digital and Hard Copy Archives

http://mapping.usgs.gov/

USFWS (NWI Mapping)

Digital and Hard Copy NWI Mapping

http://www.nwi.fws.gov/

MOP (State Data Center)

Maryland Demographic and Economic Statistics

http://www.op.state.md.us/

GIS Data Depot

Various GIS Data Sources

http://www.gisdatadepot.com/