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

Illinois Drought


System Information

System Description

The treatment plant receives water from Glenn Shoals Lake and Lake Hillsboro at 1200 gpm. Glenn Shoals Lake provides about 90 percent of the water, although the plant does not meter the two sources separately. A 38-acre sediment and nutrient control basin is located on the lake's northeastern shore.

Satellite Communities and Water Districts

Coffeen, Schram City, and Taylor Springs
Locator map for Hillsboro

Population Served:





Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Glenn Shoals Lake IR M Fk Shoal Cr 80 1250 9717 2006 9422
Lake Hillsboro IR Lake Hillsboro Cr 7.44 104.5 1017.8 1982 816.1

1989 Study:

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

USGS Gages:

No data available

Developments since 1989:

Voluntary odd- and even-day watering restrictions between 6 - 9 a.m. and 6 - 9 p.m. were instituted during the 2005 drought. Plant capacity also limited production during the summer of 2007. A new 3.5 mgd treatment plant is expected to come online in October 2008.
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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