A myriad of uses exist for water in Illinois such as drinking, cooking, cleaning, industry, irrigation, power generation, waste treatment, recreation and even transportation. In addition there is a need to support aquatic habitats and wildlife. Included here is information such as how much water is used in Illinois, who uses the water, a rough geographic distribution of that use, potential future demands from a growing population and economy, and where that demand may occur.
Potential Impacts of Climate Change on Water Availability (pdf ~800kb)
Water Supply Planning and Management: Climate Variability and Change (pdf ~1.5mb): Presented by Derek Winstanley, Chief, Illinois State Water Survey, on June 29, 2007 at a meeting of the East Central Illinois Regional Water Supply Planning Committee in Decatur, Illinois.
Consumptive Use
Measuring and Estimating Consumptive Use of Great Lakes Water (pdf ~1.1mb): This 2003 publication of the Great Lakes Commission discusses the current state of knowledge about consumptive uses and the often limited scientific or other validation for use coefficients.
Consumptive Water Use in the Great Lakes Basin, USGS, 2008 (pdf ~2.1mb)
Water Demand Scenarios for Northeastern Illinois: 2005-2050, Project Completion Report (pdf ~1.1mb)
County-Level Forecasts of Water Use in Illinois: 2005-2025 (pdf ~8.3mb)
An Analysis of Groundwater Use to Aquifer Potential Yield in Illinois (pdf ~4.8mb)
Water Demand Scenarios for Northeastern Illinois: Progress Report #1 (pdf ~250kb): Presented by Ben Dziegielewski, Southern Illinois University, at the Northeastern Illinois Regional Water Supply Planning Group meeting at the Chicago Metropolitan Agency for Planning in Chicago on June 26, 2007.