Cooley's Rift

TRUSSEL CREEK· Grundy, Tennessee· Built 1999· Earth·
High Hazard Other Private

Key Takeaway

Cooley's Rift is classified as high hazard in Tennessee. It was completed in 1999 and is 27 years old. Its primary use is other. 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 Length500 ft
Dam TypeEarth
Max Storage1.1K acre-ft
Normal Storage653 acre-ft
Surface Area48 acres
Drainage Area1 sq mi
Year Completed1999 (27 years old)
NID IDTN05114

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: July 20, 2020
State Regulated: Yes
Regulatory Agency: TENNESSEE SAFE DAMS PROGRAM

Ownership

COOLEY'S RIFT HOMEOWNERS ASSOCIATION

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cooley's Rift?

Cooley's Rift 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 Cooley's Rift?

Cooley's Rift is owned by COOLEY'S RIFT HOMEOWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cooley's Rift built?

Cooley's Rift was completed in 1999, making it 27 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 Cooley's Rift?

Cooley's Rift serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Cooley's Rift last inspected?

Cooley's Rift was last inspected on July 20, 2020. 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.