A Geographic Information System (GIS) is a collection of hardware, software and geographic data that is used to manage, display and analyze spatial data. Spatial data is essentially data that can be mapped such as the location of streams, manhole covers or areas of preserved land. Multiple layers of spatial data can be added to the GIS software for the creation of maps and models. The spatial data can also be used to perform geographic queries and analysis that can help entities make better decisions and create better solutions. For example, adding the spatial data layers for the location of steep slopes and roads over top of the existing land use layer may help a municipality determine the best areas for high density and low density growth.

The Berks County Planning Commission (BCPC) uses GIS for a wide variety of projects related to comprehensive plans, storm water, zoning, transportation, ordinance reviews and master plans (just to name a few). This data is maintained on a regular basis allowing the BCPC to make accurate decisions based on current conditions.