H. Neely Henry

Coosa River· St. Clair, Alabama· Built 1966· Gravity· 104 ft tall
High Hazard Hydroelectric Recreation Public Utility

Key Takeaway

H. Neely Henry is classified as high hazard in Alabama. It was completed in 1966 and is 60 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 104 ft (taller than 98.7% in AL)
Dam Length4,705 ft
Dam TypeGravity
Max Storage121.9K acre-ft
Normal Storage121.9K acre-ft
Surface Area11,235 acres
Drainage Area6,600 sq mi
Max Discharge340,000 cfs
Year Completed1966 (60 years old)
NID IDAL01416

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: October 27, 2021
State Regulated: No

Ownership

Alabama Power Company

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of H. Neely Henry?

H. Neely Henry is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates H. Neely Henry?

H. Neely Henry is owned by Alabama Power Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was H. Neely Henry built?

H. Neely Henry was completed in 1966, making it 60 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 H. Neely Henry?

H. Neely Henry serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is H. Neely Henry?

H. Neely Henry has a dam height of 104 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 H. Neely Henry last inspected?

H. Neely Henry was last inspected on October 27, 2021. 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.