Mangus Lake Dam

ARROYO MORTEROS· Starr, Texas· Built 1977· Earth· 20 ft tall

Key Takeaway

Mangus Lake Dam is classified as significant hazard in Texas. It was completed in 1977 and is 49 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 20 ft (taller than 33.5% in TX)
Dam Length1,500 ft
Dam TypeEarth
Max Storage284 acre-ft
Normal Storage173 acre-ft
Surface Area26 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1977 (49 years old)
NID IDTX05737

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
Last Inspection: March 11, 2009
State Regulated: No

Ownership

FERNANDO PENA

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mangus Lake Dam?

Mangus 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 Mangus Lake Dam?

Mangus Lake Dam is owned by FERNANDO PENA (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mangus Lake Dam built?

Mangus Lake Dam was completed in 1977, making it 49 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 Mangus Lake Dam?

Mangus Lake Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mangus Lake Dam?

Mangus Lake Dam has a dam height of 20 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 Mangus Lake Dam last inspected?

Mangus Lake Dam was last inspected on March 11, 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.