Walmart Store No 400 Expansion Pond Dam

TR-W FORK SAN JACINTO RIVER· Montgomery, Texas· Built 1995· Concrete· 15 ft tall
Significant Hazard Flood Risk Reduction Private

Key Takeaway

Walmart Store No 400 Expansion Pond Dam is classified as significant hazard in Texas. It was completed in 1995 and is 31 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 15 ft (taller than 15.4% in TX)
Dam Length500 ft
Dam TypeConcrete
Max Storage10 acre-ft
Normal Storage0 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge1 cfs
Year Completed1995 (31 years old)
NID IDTX09343

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: October 19, 2018
State Regulated: Yes
Regulatory Agency: TCEQ

Ownership

WALMART INC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Walmart Store No 400 Expansion Pond Dam?

Walmart Store No 400 Expansion Pond 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 Walmart Store No 400 Expansion Pond Dam?

Walmart Store No 400 Expansion Pond Dam is owned by WALMART INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Walmart Store No 400 Expansion Pond Dam built?

Walmart Store No 400 Expansion Pond Dam was completed in 1995, making it 31 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 Walmart Store No 400 Expansion Pond Dam?

Walmart Store No 400 Expansion Pond Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Walmart Store No 400 Expansion Pond Dam?

Walmart Store No 400 Expansion Pond Dam has a dam height of 15 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 Walmart Store No 400 Expansion Pond Dam last inspected?

Walmart Store No 400 Expansion Pond Dam was last inspected on October 19, 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.