Illinois Water Cycle, Illinois State Water Survey

Illinois Water Cycle

The Water Cycle

The Water (Hydrologic) Cycle  details


The water cycle depicts water moving through the atmosphere and on and under the surface of the earth. Another term for the water cycle is hydrologic cycle. Water moves

Arrows depict movements in the water (hydrologic) cycle.



Values for the Hydrologic Cycle in Illinois

The Water Budget for Illinois   details


This depiction shows water moving through the water cycle in Illinois and is based on 30-year (1971-2000) averages calculated by Illinois State Water Survey scientists. Values are in billions of gallons of water per day (BGD) and include: atmospheric moisture passing overhead (2000 BGD), precipitation (104 BGD), evapotranspiration (73 BGD), surface water flow (31 BGD), and groundwater recharge (11.6 BGD, of which 11.5 BGD is returned as groundwater discharge to surface streams). Additional surface water flows into Illinois from rivers in Indiana and Wisconsin, and water is imported into Illinois through the diversion from Lake Michigan at Chicago. Much of the water in the Mississippi, Ohio, and Wabash Rivers originates upstream of Illinois.


Further Resources:

Except where indicated, all photos and graphics have been taken/produced by Water Survey staff.

Illinois State Water Survey

2204 Griffith Dr
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