Thompson Lake Dam

Thompson Lake Dam is an earth dam located in Cobb County, Georgia, built in 1950. It carries a Low hazard potential classification.

About Thompson Lake Dam

The primary purpose of Thompson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Rasmussen, Keith (private). It impounds the Unknown near Marietta Community.

The dam stands 25 feet tall and stretches 460 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 114 acre-feet, and collects water from a drainage area of 213 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 11/16/2016.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateGeorgia
CountyCobb
Nearest CityMarietta Community
River/StreamUnknown
Coordinates33.98889, -84.43750

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height25 ft
Dam Length460 ft
Year Completed1950 (76 years old)

Storage & Hydraulics

NID Storage114 acre-ft
Max Storage114 acre-ft
Normal Storage76 acre-ft
Surface Area9 acres
Drainage Area213 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerRasmussen, Keith
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection11/16/2016
Emergency Action PlanNot Required

Identifiers

NID IDGA01481
Federal IDGA01481
More InfoState Dam Safety Program

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