Q4 Dam

Harrison, Texas· 33 ft tall
Significant Hazard Private

Key Takeaway

Q4 Dam is classified as significant hazard in Texas. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 33 ft (taller than 74.3% in TX)
Dam Length1,577 ft
Max Storage1.9K acre-ft
Max Discharge15,934 cfs
NID IDTX07353

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
State Regulated: No

Ownership

SOUTHWESTERN ELECTRIC POWER COMPANY;THE SABINE MINING COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Q4 Dam?

Q4 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 Q4 Dam?

Q4 Dam is owned by SOUTHWESTERN ELECTRIC POWER COMPANY;THE SABINE MINING COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

How tall is Q4 Dam?

Q4 Dam has a dam height of 33 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.