Mermet Dam

Mermet Dam is an earth dam located in Massac County, Illinois, built in 1950. It carries a Low hazard potential classification.

About Mermet Dam

The primary purpose of Mermet Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Department Of Natural Resources (state). It impounds the Trib Tucker Ditch near Mermet.

The dam stands 10 feet tall and stretches 20,000 feet across, creates a reservoir covering 0 acres, has a maximum storage capacity of 2,800 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 10/19/2023.

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Low HazardNot Available ConditionEmergency Action Plan: No

Location

StateIllinois
CountyMassac
Nearest CityMermet
River/StreamTrib Tucker Ditch
Coordinates37.26171, -88.85623

Physical Characteristics

Dam TypeEarth
NID Height10 ft
Dam Height10 ft
Dam Length20,000 ft
Year Completed1950 (76 years old)

Storage & Hydraulics

NID Storage2,800 acre-ft
Max Storage2,800 acre-ft
Normal Storage904 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge150 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerILLINOIS DEPARTMENT OF NATURAL RESOURCES
Owner TypeState
Hazard ClassificationLow
Condition AssessmentNot Available
Last Inspection10/19/2023
Emergency Action PlanNo

Identifiers

NID IDIL50071
Federal IDIL50071
More InfoState Dam Safety Program

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