Bona Allen Lake Dam

SUWANEE CREEK· Gwinnett, Georgia· Built 1940· Earth· 17 ft tall
Low Hazard Other Private

Key Takeaway

Bona Allen Lake Dam is classified as low hazard in Georgia. It was completed in 1940 and is 86 years old. Its primary use is other.

Physical Details

Dam Height 17 ft (taller than 28.7% in GA)
Dam Length166 ft
Dam TypeEarth
Max Storage216 acre-ft
Normal Storage184 acre-ft
Surface Area25 acres
Drainage Area0 sq mi
Year Completed1940 (86 years old)
NID IDGA01805

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: March 1, 1989
State Regulated: No

Ownership

Hamilton Mill Business Center Owners' Association, Inc.

Private

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Frequently Asked Questions

What is the hazard classification of Bona Allen Lake Dam?

Bona Allen Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Bona Allen Lake Dam?

Bona Allen Lake Dam is owned by Hamilton Mill Business Center Owners' Association, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Bona Allen Lake Dam built?

Bona Allen Lake Dam was completed in 1940, making it 86 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Bona Allen Lake Dam?

Bona Allen Lake Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Bona Allen Lake Dam?

Bona Allen Lake Dam has a dam height of 17 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Bona Allen Lake Dam last inspected?

Bona Allen Lake Dam was last inspected on March 1, 1989. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.