United Off-Channel Reservoir Dam

MISSION MAIN CANAL· Hidalgo, Texas· Earth· 18 ft tall
High Hazard Private

Key Takeaway

United Off-Channel Reservoir Dam is classified as high hazard in Texas. 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 18 ft (taller than 25.8% in TX)
Dam Length5,940 ft
Dam TypeEarth
Max Storage768 acre-ft
Normal Storage672 acre-ft
Surface Area48 acres
Drainage Area49 sq mi
Max Discharge735 cfs
NID IDTX07545

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
State Regulated: Yes
Regulatory Agency: TCEQ

Ownership

UNITED IRRIGATION DISTRICT

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of United Off-Channel Reservoir Dam?

United Off-Channel Reservoir 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 United Off-Channel Reservoir Dam?

United Off-Channel Reservoir Dam is owned by UNITED IRRIGATION DISTRICT (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

How tall is United Off-Channel Reservoir Dam?

United Off-Channel Reservoir Dam has a dam height of 18 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.