Ambrose Mine

TR ALLEGHENY RIVER· Armstrong, Pennsylvania· Earth· 26 ft tall
Low Hazard Other Recreation Private

Key Takeaway

Ambrose Mine is classified as low hazard in Pennsylvania. Its primary use is other.

Physical Details

Dam Height 26 ft (taller than 58.2% in PA)
Dam Length260 ft
Dam TypeEarth
Max Storage30 acre-ft
Normal Storage11 acre-ft
Surface Area2 acres
Drainage Area0 sq mi
NID IDPA01511

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
Last Inspection: November 2, 2017
State Regulated: Yes
Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

SAMUEL W. MONTGOMERY

Private

Nearby Dams

Allegheny River Lock and Dam 7

Armstrong, PA

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Allegheny River Lock and Dam 8

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Low Hazard

Allegheny River Lock and Dam 9

Armstrong, PA

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Allegheny River Lock and Dam 6

Armstrong, PA

Low Hazard

Crooked Creek Dam

Armstrong, PA

High Hazard

Amerikohl Management

Butler, PA

Low Hazard 29 ft

Frequently Asked Questions

What is the hazard classification of Ambrose Mine?

Ambrose Mine 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 Ambrose Mine?

Ambrose Mine is owned by SAMUEL W. MONTGOMERY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Ambrose Mine?

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

How tall is Ambrose Mine?

Ambrose Mine has a dam height of 26 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 Ambrose Mine last inspected?

Ambrose Mine was last inspected on November 2, 2017. 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.