Dorys

ROCK HILL CREEK· Pike, Pennsylvania· Built 1919· Timber Crib· 10 ft tall

Significant Hazard Recreation Private

Key Takeaway

Dorys is classified as significant hazard in Pennsylvania. It was completed in 1919 and is 107 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height	10 ft (taller than 8.3% in PA)
Dam Length	471 ft
Dam Type	Timber Crib
Max Storage	360 acre-ft
Normal Storage	199 acre-ft

Surface Area	52 acres
Drainage Area	6 sq mi
Year Completed	1919 (107 years old)
NID ID	PA00311

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: June 18, 2020

State Regulated: Yes

Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

BLUE HERON DEVELOPMENT COMPANY, INC.

Private

Nearby Dams

Lower Hemlock Lake

Pike, PA

High Hazard 15 ft

Hemlock Lake

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High Hazard 14 ft

Pecks Pond

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High Hazard 7 ft

Pickerel Pond

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High Hazard 14 ft

Elm Lake

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High Hazard 28 ft

Flatbrook Way Lake

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Low Hazard 10 ft

Mcconnell Lake

Pike, PA

Significant Hazard 16 ft

Conashaugh Lake

Pike, PA

Significant Hazard 14 ft

Frequently Asked Questions

What is the hazard classification of Dorys?

Dorys 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 Dorys?

Dorys is owned by BLUE HERON DEVELOPMENT COMPANY, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dorys built?

Dorys was completed in 1919, making it 107 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Dorys?

Dorys 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 Dorys?

Dorys has a dam height of 10 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 Dorys last inspected?

Dorys was last inspected on June 18, 2020. 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.