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GIS (Geographic Information System) is enhancing the way Calvert County Government serves its citizens. GIS technology allows users to view and analyze data and geographic information in an integrated way. Using GIS capabilities, 911 Dispatchers are able to view the location of emergency calls and provide responders with details about access, fire hydrants, nearby hazards and much more. Planners use GIS to help evaluate the impact of land use on the environment and surrounding infrastructure. Engineers use GIS to assess locations of future roads and other major projects.

Calvert County GIS is part of the Department of Technology Services and supports the GIS needs of all Departments within County Government. This support includes creating and/or maintaining a wide variety of geographic data layers including street centerlines, addresses, utility infrastructure, topography, facility and service locations, and more.

Aerial photography is also part of the GIS. This imagery is frequently used as a background or basemap and over time provides snapshots of our changing county.

Citizens can access some of the information available in the Calvert County GIS through GEMS, our interactive online map. With GEMS, users can find locations of important facilities and County services, query the map for streets and addresses, as well as view 2007 aerial photography.