Naylor Lower

TR HARTMAN'S RUN· York, Pennsylvania· Earth· 19 ft tall
Significant Hazard Irrigation Private

Key Takeaway

Naylor Lower is classified as significant hazard in Pennsylvania. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 19 ft (taller than 41.1% in PA)
Dam Length115 ft
Dam TypeEarth
Max Storage19 acre-ft
Normal Storage10 acre-ft
Surface Area2 acres
Drainage Area0 sq mi
NID IDPA01918

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: March 3, 2021
State Regulated: Yes
Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

FORGE HILL ORCHARDS, INC

Private

Nearby Dams

Naylor Middle

York, PA

Significant Hazard

Brunner Island Ash Basin No 6

York, PA

Significant Hazard 39 ft

York Haven Main Dam

Dauphin, PA

Low Hazard 10 ft

Longstown Village

York, PA

Significant Hazard 16 ft

Kinsley Detention Basin

York, PA

Significant Hazard 15 ft

Kehm Run

York, PA

Significant Hazard 27 ft

York Indian Rock Dam

York, PA

High Hazard 83 ft

Basin 2

York, PA

High Hazard 10 ft

Frequently Asked Questions

What is the hazard classification of Naylor Lower?

Naylor Lower 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 Naylor Lower?

Naylor Lower is owned by FORGE HILL ORCHARDS, INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Naylor Lower?

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

How tall is Naylor Lower?

Naylor Lower has a dam height of 19 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 Naylor Lower last inspected?

Naylor Lower was last inspected on March 3, 2021. 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.