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

Illinois Drought


Drought Vulnerability Classification

Adequate System – There is greater than a 90% probability that the community will not experience any water shortages or threat thereof during a severe drought similar to the drought of record.

Drought Adequacy Description

Although the Kaskaskia River is not the primary source of supply in most years, it is the fail-safe source during a severe drought condition. The river’s expected minimum flow greatly exceeds the community’s demand; therefore, the drought vulnerability of the system is classified as ADEQUATE.

Additional Notes

Population Served:





Big Muddy, Kaskaskia

System Information

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Illinois State Water Survey

2204 Griffith Dr
Champaign, IL 61820-7463

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