About The Illinois State Water Survey

Illinois Water Supply Planning

Groundwater Flow Modeling

The Illinois State Water Survey (ISWS) has a long history in the field of groundwater flow modeling. ISWS groundwater scientists pioneered many of the early modeling technologies that were precursors to modern standards such as MODFLOW.

Today, ISWS maintains the Illinois Groundwater Flow Modeling Framework, which consists of one of the largest regional groundwater flow models in the world. This model is indispensable for water supply planning, capable of assessing a wide variety of groundwater issues at local, regional, and interstate scales. The ISWS also maintains periodically updated contouring models to assess changing aquifer conditions.

See: Illinois Groundwater Flow Model


Pre-empting a water crisis in Northeastern Illinois


Splitting Kendall County: The Hydrologic Impact of the Sandwich Fault


Translating Groundwater Science to Policy


Recent Publications

Historic Publications

Illinois State Water Survey

2204 Griffith Dr., MC-674
Champaign, IL 61820-7463
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