Drought Vulnerability of Illinois' Community Surface Water Systems, Illinois State Water Survey

Illinois Drought


System Information

System Description

Water is pumped directly from Lake Pittsfield to the treatment plant at up to 480 gpm. Numerous springs and four intakes at different drawing levels buffer the system against drought. The treatment plant is designed to process 1 mgd but chemical treatment constraints limit production to 0.68 mgd.

Satellite Communities and Water Districts

Locator map for Pittsfield

Population Served:





Mississippi N Central
Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Lake Pittsfield IR Blue Creek 11.1 200 2679 1992 2503.7

1989 Study:

50-year drought yield sufficient at present level of water use.

USGS Gages:

No data available

Developments since 1989:

The system is considering taking Lake Pittsfield offline and piping in groundwater from wells in the Mississippi Bottoms 12 miles away, partly due to increased surface water treatment costs. Sedimentation also has reduced the surface area of the lake's northern basin. The quantity of sediment removed from recent dredging could not be obtained.
Chart of Annual Raw Water Production (mgd)

Notes and Terminology

Vulnerability Report

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Illinois State Water Survey

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