Palmyra-modesto City Lake Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyMacoupin
Nearest CityHETTICK-OFFSTREAM
River/StreamTRIB NASSA CREEK
Coordinates39.44421, -89.95745

Physical Characteristics

Dam TypeEarth
NID Height50 ft
Dam Height50 ft
Dam Length620 ft
Year Completed1965 (61 years old)

Storage & Hydraulics

NID Storage967 acre-ft
Max Storage967 acre-ft
Normal Storage565 acre-ft
Surface Area37 acres
Drainage Area1 sq mi
Max Discharge4,179 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerPALMYRA-MODESTO WATER COMMISSION
Owner TypePublic Utility
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection08/07/2024
Emergency Action PlanYes

Identifiers

NID IDIL00772
Federal IDIL00772
More InfoState Dam Safety Program

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