Hammond Dam

CROOKED CREEK· Tioga, Pennsylvania· Built 1978· Rockfill· 122 ft tall

High Hazard Flood Risk Reduction Other Recreation Federal Government

Key Takeaway

Hammond Dam is classified as high hazard in Pennsylvania. It was completed in 1978 and is 48 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	122 ft (taller than 97.4% in PA)
Dam Length	6,450 ft
Dam Type	Rockfill
Max Storage	136.9K acre-ft
Normal Storage	8.6K acre-ft

Surface Area	685 acres
Drainage Area	122 sq mi
Max Discharge	218,100 cfs
Year Completed	1978 (48 years old)
NID ID	PA01133

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: July 15, 2021

State Regulated: No

Ownership

USACE - Baltimore District

Federal Government

Nearby Dams

Tioga Dam

Tioga, PA

High Hazard 141 ft

Taylor Run

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Low Hazard 33 ft

Cowanesque Dam

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High Hazard 151 ft

Brown

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High Hazard 17 ft

Hills Creek

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High Hazard 32 ft

Collum Pond

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High Hazard 15 ft

Borg Dam

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High Hazard 14 ft

Baxter Lake Dam

Steuben, NY

Low Hazard 12 ft

Frequently Asked Questions

What is the hazard classification of Hammond Dam?

Hammond Dam 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 Hammond Dam?

Hammond Dam is owned by USACE - Baltimore District (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Hammond Dam built?

Hammond Dam was completed in 1978, making it 48 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 Hammond Dam?

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

How tall is Hammond Dam?

Hammond Dam has a dam height of 122 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 Hammond Dam last inspected?

Hammond Dam was last inspected on July 15, 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.