Geographic Information Systems

The Geographic Information Systems (GIS) Division’s primary function is to provide mapping and spatial analyses to city departments and to offer such services to other public and private entities at a reasonable cost.


GIS activities focus principally on:

  • Creating, managing, updating, and enhancing database layers of geographically located features and corresponding feature information;
  • Creating maps and statistical data from the database layers;
  • Use spatial models to perform analyses on real world problems;
  • Support city staff in their efforts to use GIS application programs;
  • Assist city staff with GIS and mapping needs for special projects; and
  • Maintain the city's Zoning map and City Street map.

What is GIS?

A Geographic Information System is a computer based tool used for storing, displaying, manipulating, and analyzing large amounts of geographically referenced information. This tool includes computer hardware, software, data storage capabilities, and the data. Geographic Information Systems Technology allows local governments to operate more efficiently by providing timely information and solutions to elected officials and public administrators. There is no doubt that for many, the term GIS is synonymous with mapping. Technically, it is not. While mapping is a highly useful and sometimes artful rendering or product of GIS technology, it improves upon traditional mapping by relating attributes to spatial features, which enables users to query and analyze data in a more comprehensive and meaningful way.

For this reason, the strength of a GIS can be attributed to the related databases and the ability to overlay many different queries and layers at one time and in one place. GIS is about Managing Data. It combines layers of information about a place to give you a better understanding of that place. Depending on your purpose, you can combine different layers of infor-mation to analyze things such as environmental dam-age after a storm, viewing similar crimes in a city to detect a pattern, or finding the best location for a fire station based on set criteria.

MAP APP - Online Mapping Application

Citizens now have remote access to comprehensive property data and information through a new Geographic Information Systems (GIS) web application. The app, found here, allows users to search maps and specific properties by owner name, address or parcel ID. From there, map layers can be applied to find information ranging from school zones to assessed value to voting precincts.

The app includes data for all of Johnson City and Washington County. Users can choose from a variety of base maps including aerial, streets and topographical.