Lonesome Lake

BRINKER RUN· Westmoreland, Pennsylvania· Earth· 24 ft tall
Low Hazard Recreation Private

Key Takeaway

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

Physical Details

Dam Height 24 ft (taller than 52.7% in PA)
Dam Length400 ft
Dam TypeEarth
Max Storage63 acre-ft
Normal Storage39 acre-ft
Drainage Area1 sq mi
NID IDPA01901

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: July 1, 2019
State Regulated: Yes
Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

LONESOME VALLEY LAKE ASSOCIATION

Private

Nearby Dams

Brinkerton

Westmoreland, PA

Low Hazard 29 ft

Township Line

Westmoreland, PA

High Hazard 56 ft

Eidemiller Lake

Westmoreland, PA

High Hazard 22 ft

Mammoth Lake

Westmoreland, PA

High Hazard 15 ft

Twin Lakes No 2

Westmoreland, PA

High Hazard 34 ft

Twin Lakes No 1

Westmoreland, PA

High Hazard 31 ft

Ridilla Upper Pond A

Westmoreland, PA

Significant Hazard 15 ft

Jeannette (Mountain Valley Lake)

Westmoreland, PA

Significant Hazard 36 ft

Frequently Asked Questions

What is the hazard classification of Lonesome Lake?

Lonesome Lake 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 Lonesome Lake?

Lonesome Lake is owned by LONESOME VALLEY LAKE ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Lonesome Lake?

Lonesome Lake 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 Lonesome Lake?

Lonesome Lake has a dam height of 24 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 Lonesome Lake last inspected?

Lonesome Lake was last inspected on July 1, 2019. 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.