Byrnes Lake Dam

UNKNOWN· Gwinnett, Georgia· Earth· 40 ft tall
Low Hazard Flood Risk Reduction Private

Key Takeaway

Byrnes Lake Dam is classified as low hazard in Georgia. Its primary use is flood risk reduction.

Physical Details

Dam Height 40 ft (taller than 91.5% in GA)
Dam Length318 ft
Dam TypeEarth
Max Storage53 acre-ft
Normal Storage35 acre-ft
Surface Area5 acres
NID IDGA03905

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

Agio Corporation

Private

Nearby Dams

Lake Park Dam No 2

Gwinnett, GA

Unknown 34 ft

Crossland-Universal Lake Dam

Gwinnett, GA

Unknown 25 ft

Perkins Lake Dam

Gwinnett, GA

Low Hazard 25 ft

Mulberry Lake Dam

Gwinnett, GA

High Hazard 34 ft

Hamilton Mill Lake Dam

Gwinnett, GA

Unknown 24 ft

Dover Dam

Gwinnett, GA

Low Hazard 28 ft

Crowe Lake Dam No. 3

Gwinnett, GA

High Hazard 30 ft

Upper Mulberry River WS Str. # 11

Gwinnett, GA

High Hazard 46 ft

Frequently Asked Questions

What is the hazard classification of Byrnes Lake Dam?

Byrnes 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 Byrnes Lake Dam?

Byrnes Lake Dam is owned by Agio Corporation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Byrnes Lake Dam?

Byrnes Lake Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Byrnes Lake Dam?

Byrnes Lake Dam has a dam height of 40 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 Byrnes Lake Dam last inspected?

Byrnes 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.