Welcome to the Indiana Water Quality Atlas
The Indiana Water Quality Atlas (IWQA) uses geographic information systems (GIS) tools to focus specifically on Indiana’s water quality as affected by land use change. By using a LTHIA watershed delineation and water quality model developed at Purdue University, as well as several other GIS-based resources, IWQA provides an application to effectively address Indiana’s water quality issues.
Purdue University has created several tutorials, referenced on this website, to help the user master the GIS tools.
Stay Connected
You are leaving the IN.gov website. By clicking OK, you will be taken to a website that is not affiliated with the State of Indiana and may have different privacy and security policies. The State of Indiana is not responsible for, and does not endorse, guarantee, or monitor content, availability, viewpoints, products, or services that are offered or expressed on this non IN.gov portal website.
