Pa-482

TR HARMON CREEK· Washington, Pennsylvania· Built 1970· Earth· 38 ft tall
High Hazard Flood Risk Reduction Local Government

Key Takeaway

Pa-482 is classified as high hazard in Pennsylvania. It was completed in 1970 and is 56 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 38 ft (taller than 75.2% in PA)
Dam Length460 ft
Dam TypeEarth
Max Storage352 acre-ft
Normal Storage32 acre-ft
Surface Area6 acres
Drainage Area1 sq mi
Year Completed1970 (56 years old)
NID IDPA00469

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: November 6, 2020
State Regulated: Yes
Regulatory Agency: Pennsylvania Department of Environmental Protection

Ownership

WASHINGTON COUNTY

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pa-482?

Pa-482 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 Pa-482?

Pa-482 is owned by WASHINGTON COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pa-482 built?

Pa-482 was completed in 1970, making it 56 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 Pa-482?

Pa-482 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 Pa-482?

Pa-482 has a dam height of 38 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 Pa-482 last inspected?

Pa-482 was last inspected on November 6, 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.