Hearn Dam

MAGNUS BRANCH· Tyler, Texas· Earth· 17 ft tall
Significant Hazard Recreation Private

Key Takeaway

Hearn Dam is classified as significant hazard in Texas. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 17 ft (taller than 23.1% in TX)
Dam Length550 ft
Dam TypeEarth
Max Storage68 acre-ft
Normal Storage28 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge3,768 cfs
NID IDTX09407

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
Last Inspection: September 29, 2009
State Regulated: No

Ownership

THREE RIVERS COUNCIL BOY SCOUTS OF AMERICA

Private

Nearby Dams

Barclay Lake Dam

Tyler, TX

Significant Hazard 17 ft

Electro Lake Dam

Tyler, TX

Significant Hazard 12 ft

Boykin Lake Dam

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Significant Hazard 15 ft

Twin Lakes Dam

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Significant Hazard 10 ft

Clemmons Lake Dam

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Low Hazard 12 ft

Boykin Lake Dam No 1

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Significant Hazard 19 ft

Reid Lake Dam

Tyler, TX

Low Hazard 13 ft

Sutton Lake Dam

Tyler, TX

Significant Hazard 13 ft

Frequently Asked Questions

What is the hazard classification of Hearn Dam?

Hearn 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 Hearn Dam?

Hearn Dam is owned by THREE RIVERS COUNCIL BOY SCOUTS OF AMERICA (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Hearn Dam?

Hearn Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Hearn Dam?

Hearn Dam has a dam height of 17 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 Hearn Dam last inspected?

Hearn Dam was last inspected on September 29, 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.