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

Illinois Drought

Streator (Illinois-American)

System Information

System Description

A low channel dam along the Vermilion River (Illinois) stores 1075 ac-ft of water and an additional 728 ac-ft can be pumped into an old quarry, which functions as an off-channel reservoir, a storage basin for low nitrate water, and a pre-treatment sedimentation basin. Water can be pumped from the river to the treatment plant using three 2 mgd pumps and from the river to the off-channel reservoir using one 5 mgd pump.

Satellite Communities and Water Districts

Kangley and South Streator
Locator map for Streator (Illinois-American)

Population Served:



La Salle


Vermilion - Illinois
Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Vermilion River* RW Vermilion R 1084 200 1074.5 2006
Streator Quarry OCR Vermilion R 0 30.3 728 2006 728

1989 Study:

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

USGS Gages:

Vermilion River near Leonore (05555300)

Developments since 1989:

Streator has installed a small ion exchange plant because storage in the reservoir is insufficient for blending during extended periods of high nitrate concentrations in the Vermilion River.
Chart of Annual Raw Water Production (mgd)
Note: *A low channel dam on the river creates storage as noted in the table.

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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