Thompson Lake Dam

JACKSNIPE BRANCH· Lonoke, Arkansas· Built 1953· Earth· 17 ft tall
Significant Hazard Irrigation Private

Key Takeaway

Thompson Lake Dam is classified as significant hazard in Arkansas. It was completed in 1953 and is 73 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 17 ft (taller than 12.3% in AR)
Dam Length400 ft
Dam TypeEarth
Max Storage80 acre-ft
Normal Storage70 acre-ft
Year Completed1953 (73 years old)
NID IDAR00057

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
State Regulated: No

Ownership

JOHN THOMPSON

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Thompson Lake Dam?

Thompson Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Thompson Lake Dam?

Thompson Lake Dam is owned by JOHN THOMPSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Thompson Lake Dam built?

Thompson Lake Dam was completed in 1953, making it 73 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 Thompson Lake Dam?

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

How tall is Thompson Lake Dam?

Thompson 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.

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.