Rock Lake Village Dam

Trib. Blackwater river· Johnson, Missouri· Built 2006· Earth· 66 ft tall
High Hazard Private

Key Takeaway

Rock Lake Village Dam is classified as high hazard in Missouri. It was completed in 2006 and is 20 years old. 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 66 ft (taller than 98.1% in MO)
Dam Length730 ft
Dam TypeEarth
Max Storage585 acre-ft
Normal Storage540 acre-ft
Surface Area27 acres
Drainage Area0 sq mi
Year Completed2006 (20 years old)
NID IDMO40148

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: December 2, 2020
State Regulated: Yes
Regulatory Agency: Dam and Reservoir Safety Program

Ownership

Private

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Frequently Asked Questions

What is the hazard classification of Rock Lake Village Dam?

Rock Lake Village Dam 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 Rock Lake Village Dam?

Rock Lake Village Dam is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rock Lake Village Dam built?

Rock Lake Village Dam was completed in 2006, making it 20 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

How tall is Rock Lake Village Dam?

Rock Lake Village Dam has a dam height of 66 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 Rock Lake Village Dam last inspected?

Rock Lake Village Dam was last inspected on December 2, 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.