Mannitto

TR LOYALHANNA CREEK· Westmoreland, Pennsylvania· Earth· 18 ft tall
Low Hazard Recreation Private

Key Takeaway

Mannitto is classified as low hazard in Pennsylvania. Its primary use is recreation.

Physical Details

Dam Height 18 ft (taller than 37.7% in PA)
Dam Length550 ft
Dam TypeEarth
Max Storage95 acre-ft
Normal Storage50 acre-ft
Surface Area11 acres
Drainage Area0 sq mi
NID IDPA01602

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: June 26, 2017
State Regulated: Yes
Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

MANNITTO GOLF CLUB

Private

Nearby Dams

Loyalhanna Dam

Westmoreland, PA

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Greenwalt

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Keystone State Park

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Conemaugh Dam

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Ridilla Upper Pond A

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Twin Lakes No 1

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Twin Lakes No 2

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Westinghouse Electric

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Frequently Asked Questions

What is the hazard classification of Mannitto?

Mannitto 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 Mannitto?

Mannitto is owned by MANNITTO GOLF CLUB (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Mannitto?

Mannitto 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 Mannitto?

Mannitto 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.

When was Mannitto last inspected?

Mannitto was last inspected on June 26, 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.