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

Illinois Drought


System Information

System Description

Greenfield Lake is the main regular source. Portable pumps can extract water from Coles Lake, a pond upstream, during emergencies, although this source has never been used. Water is piped directly from the lake to the system's 2.5 mgd treatment plant at 350 gpm.

Satellite Communities and Water Districts

Locator map for Greenfield

Population Served:





Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Greenfield Lake IR Rubicon Cr Trib 1.11 50 564 1980 517.3
Coles Lake* IR Rubicon Cr Trib 7 49 2007

1989 Study:

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

USGS Gages:

No data available

Developments since 1989:

This community had to shut off pools and car washes and ban lawn and garden watering due to shortages from a water deficit that began during the 2005 drought. Bulk water sales were prohibited from May 2006 to January 2007. The community is working on an emergency connection with the Greene RWD.
Chart of Annual Raw Water Production (mgd)
Note: *Coles Lake never has been used as an emergency source. Its capacity estimate is based upon a rough estimate of its surface area (7 ac) and average depth (7 ft).

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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