Simpson Lake Dam

Simpson Lake Dam is an earth dam located in DeKalb County, Georgia, built in 1960. It carries a Low hazard potential classification.

About Simpson Lake Dam

The primary purpose of Simpson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Estate Of Catherine Simpson (private). It impounds the Unknown near Lithonia.

The dam stands 31 feet tall and stretches 390 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 90 acre-feet. Completed in 1960, the structure is well into its service life at over 50 years old.

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 05/01/2005. That was over 20 years ago.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateGeorgia
CountyDeKalb
Nearest CityLithonia
River/StreamUnknown
Coordinates33.63889, -84.10611

Physical Characteristics

Dam TypeEarth
NID Height31 ft
Dam Height31 ft
Dam Length390 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage90 acre-ft
Max Storage90 acre-ft
Normal Storage62 acre-ft
Surface Area6 acres
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerEstate of Catherine Simpson
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection05/01/2005
Emergency Action PlanNot Required

Identifiers

NID IDGA03919
Federal IDGA03919
More InfoState Dam Safety Program

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