Pinckneyville Reservoir Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyPerry
Nearest CityPINKNEYVILLE
River/StreamOPOSSUM CREEK
Coordinates38.09678, -89.39685

Physical Characteristics

Dam TypeEarth
NID Height45 ft
Dam Height45 ft
Dam Length920 ft
Year Completed1953 (73 years old)

Storage & Hydraulics

NID Storage6,565 acre-ft
Max Storage6,565 acre-ft
Normal Storage2,870 acre-ft
Surface Area202 acres
Drainage Area6 sq mi
Max Discharge6,371 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerCITY OF PINCKNEYVILLE
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection12/10/2025
Emergency Action PlanYes

Identifiers

NID IDIL00537
Federal IDIL00537
More InfoState Dam Safety Program

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