Illinois Water Supply Planning

Since 2006 the Illinois Department of Natural Resources (IDNR) has funded the Illinois State Water Survey and Illinois State Geological Survey to lead regional and state water supply planning activities. Ten planning regions have been defined throughout the state. Planning activities have been conducted in the Kaskaskia River Basin, East Central Illinois Basin, and Northeastern Illinois regions. Planning activities are currently being conducted for the Middle Illinois Basin, Kankakee Watershed, and Northwestern Illinois regions. Future water supply planning will be conducted in the remaining regions.