Welcome to the Town of Groton, Connecticut

About GIS

What is GIS?

A geographic information system (GIS) is a computer-based tool that allows for the storage, editing, display, query, and analysis of geographically referenced information. This information is sometimes referred to as geospatial information. GIS technology is unique in that it combines database operations (such as queries, data sorts, and statistical analyses) with visualization and spatial analysis functions that are associated with maps. These powerful and wide-ranging capabilities distinguish GIS from traditional databases (which do not offer this geographic visualization capability) and from computer-aided drafting applications (which do not offer advanced database functionality). GIS is therefore a valuable tool used by individuals and organizations alike, from businesses to universities to governments of all levels.

Many challenges we face in the modern world-such as crime, pollution, natural disasters, spread of diseases, natural resource management, urban sprawl, etc.-often have a geographic component. Similarly, challenges faced by local communities-managing growth responsibly, planning infrastructure improvements, attracting and siting new businesses, routing emergency vehicles, etc.-also have a geographic dimension. GIS provides the capability to create maps, integrate information, visualize scenarios, analyze trends, and to develop effective solutions.

What can a GIS do?

Questions a GIS can answer:
  • What exists at a particular location?
  • Find a location where this exists.
  • Uses both location and distance to find the differences within an area over time.
  • Where does one thing occur, where something else exists.
  • If we were to do this, what would the result be?
  • The Town's GIS aerial mapping project was completed and updated maps and data will be an important resource, not only for revaluation, but for planning and engineering as well.
Some uses of GIS technology in the Town of Groton include:

Public Works:
  • Stormwater System mapping
  • Sanitary System Mapping
  • Street Light maintenance and inventory
  • Asset inventory and management
Assessor's Office:
  • Public map requests
  • Buffer notification maps/lists
  • Property value analysis
  • Thematic maps through a live link to the Assessor's database.
  • Tax Mapping
Planning/Economic Development:
  • Public map request
  • Zoning
  • Asset inventory and management
  • Buffer notification for permit application submittals
Emergency Communications/Police:
  • 911 dispatch
  • Crime analysis
  • Accident investigations
  • Homeland security