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

Illinois Drought


System Information

System Description

Neoga leases Lake Mattoon water from the City of Mattoon. The Reliant Energy peaker plant also withdraws water from the lake. Neoga has one intake on the lake that can transport water directly to the treatment plant at 255 gpm. During droughts, Lake Mattoon water is allocated to Mattoon and Neoga based on population ratios.

Satellite Communities and Water Districts

Locator map for Neoga

Population Served:





Little Wabash
Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Lake Mattoon IR Little Wabash R 56 1027 11812 2001 11503.7

1989 Study:

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

USGS Gages:

No data available

Developments since 1989:

The Reliant Energy peaker plant began withdrawing water from Lake Mattoon in 2001.
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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