Zachry Lake No 3 Dam

TR-RIO GRANDE· Webb, Texas· Built 1979· Earth· 24 ft tall
Low Hazard Private

Key Takeaway

Zachry Lake No 3 Dam is classified as low hazard in Texas. It was completed in 1979 and is 47 years old.

Physical Details

Dam Height 24 ft (taller than 47.7% in TX)
Dam Length1,650 ft
Dam TypeEarth
Max Storage529 acre-ft
Normal Storage250 acre-ft
Surface Area32 acres
Drainage Area0 sq mi
Year Completed1979 (47 years old)
NID IDTX05313

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: TCEQ

Ownership

HB ZACHRY CONSTRUCTION COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Zachry Lake No 3 Dam?

Zachry Lake No 3 Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Zachry Lake No 3 Dam?

Zachry Lake No 3 Dam is owned by HB ZACHRY CONSTRUCTION COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Zachry Lake No 3 Dam built?

Zachry Lake No 3 Dam was completed in 1979, making it 47 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

How tall is Zachry Lake No 3 Dam?

Zachry Lake No 3 Dam has a dam height of 24 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.

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.