Mann Lake Dam

BRAZOS RIVER· Falls, Texas· Built 1957· Earth· 16 ft tall
Significant Hazard Private

Key Takeaway

Mann Lake Dam is classified as significant hazard in Texas. It was completed in 1957 and is 69 years old. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 16 ft (taller than 19.7% in TX)
Dam Length720 ft
Dam TypeEarth
Max Storage108 acre-ft
Normal Storage47 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge1,495 cfs
Year Completed1957 (69 years old)
NID IDTX05067

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: Yes
Last Inspection: July 22, 2009
State Regulated: No

Ownership

DALE HAYNES

Private

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Able Lake Dam

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Elm Lake Dam

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Tomlinson Lake Dam

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Castleman Creek WS SCS Site 7 Dam

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Frequently Asked Questions

What is the hazard classification of Mann Lake Dam?

Mann 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 Mann Lake Dam?

Mann Lake Dam is owned by DALE HAYNES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mann Lake Dam built?

Mann Lake Dam was completed in 1957, making it 69 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

How tall is Mann Lake Dam?

Mann Lake Dam has a dam height of 16 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 Mann Lake Dam last inspected?

Mann Lake Dam was last inspected on July 22, 2009. 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.