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

Illinois Drought


System Information

System Description

Two 550 gpm pumps convey water from Bloomfield Lake (Vienna City Lake) to an off-channel reservoir or directly to the treatment plant via a valve-controlled bypass. Some customers are directly connected to the Millstone Water District, which regularly provides the system with 0.01 mgd and can offer more during emergencies.

Satellite Communities and Water Districts

Locator map for Vienna

Population Served:





Water Source
Name Type Stream DA (sq mi) SA (ac) Capacity Year Est. Est. 2010 Cap. (ac-ft)
Bloomfield Lake IR Little Cache Cr Trib 1.66 54 1472.8 1979 1403.8
Off-Channel Res. OCR Little Cache Cr Trib 0 7.5 116.7 117
Millstone WD GWP

1989 Study:

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

USGS Gages:

No data available

Developments since 1989:

Vienna has purchased additional water from Millstone WD since 2000 and has the option of purchasing more water during droughts. These purchases may continue to increase in the near future.
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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