Basin 1

MILL CREEK· York, Pennsylvania· Built 1998· Earth· 13 ft tall

High Hazard Flood Risk Reduction Local Government

Key Takeaway

Basin 1 is classified as high hazard in Pennsylvania. It was completed in 1998 and is 28 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height	13 ft (taller than 21.2% in PA)
Dam Length	215 ft
Dam Type	Earth
Max Storage	19 acre-ft

Drainage Area	1 sq mi
Year Completed	1998 (28 years old)
NID ID	PA01684

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes

Last Inspection: December 29, 2020

State Regulated: Yes

Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

YOE BOROUGH

Local Government

Nearby Dams

Basin 2

York, PA

High Hazard 10 ft

Kehm Run

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Significant Hazard 27 ft

Longstown Village

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Significant Hazard 16 ft

Cabin Creek

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High Hazard 28 ft

Kinsley Detention Basin

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Significant Hazard 15 ft

Lake Redman

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High Hazard 52 ft

Lake Williams

York, PA

High Hazard 58 ft

York Indian Rock Dam

York, PA

High Hazard 83 ft

Frequently Asked Questions

What is the hazard classification of Basin 1?

Basin 1 is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Basin 1?

Basin 1 is owned by YOE BOROUGH (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Basin 1 built?

Basin 1 was completed in 1998, making it 28 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 Basin 1?

Basin 1 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Basin 1?

Basin 1 has a dam height of 13 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 Basin 1 last inspected?

Basin 1 was last inspected on December 29, 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.