Willoughby

Madison, Tennessee· Built 1994· Earth·
Low Hazard State Government

Key Takeaway

Willoughby is classified as low hazard in Tennessee. It was completed in 1994 and is 32 years old.

Physical Details

Dam Length1,060 ft
Dam TypeEarth
Max Storage380 acre-ft
Normal Storage150 acre-ft
Surface Area26 acres
Drainage Area1 sq mi
Year Completed1994 (32 years old)
NID IDTN11342

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: October 4, 2018
State Regulated: Yes
Regulatory Agency: TENNESSEE SAFE DAMS PROGRAM

Ownership

WTRBA

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Willoughby?

Willoughby 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 Willoughby?

Willoughby is owned by WTRBA (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Willoughby built?

Willoughby was completed in 1994, making it 32 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

When was Willoughby last inspected?

Willoughby was last inspected on October 4, 2018. 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.