Duggan

Snider Creek (OFFSTREAM)· Jackson, Oregon· Built 1965· Earth· 23 ft tall

High Hazard Recreation Private

Key Takeaway

Duggan is classified as high hazard in Oregon. It was completed in 1965 and is 61 years old. Its primary use is recreation. 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	23 ft (taller than 39.8% in OR)
Dam Length	1,380 ft
Dam Type	Earth
Max Storage	50 acre-ft
Normal Storage	50 acre-ft

Surface Area	9 acres
Drainage Area	0 sq mi
Max Discharge	200 cfs
Year Completed	1965 (61 years old)
NID ID	OR00475

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 14, 2021

State Regulated: Yes

Regulatory Agency: OWRD

Ownership

Randall G and Agela Lomonaco

Private

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Skou Reservoir

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Sams Valley

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Mccormick Reservoir

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Simpson Reservoir (Jackson)

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Medford Forest Nursery

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Frequently Asked Questions

What is the hazard classification of Duggan?

Duggan 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 Duggan?

Duggan is owned by Randall G and Agela Lomonaco (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Duggan built?

Duggan was completed in 1965, making it 61 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 Duggan?

Duggan 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 Duggan?

Duggan has a dam height of 23 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 Duggan last inspected?

Duggan was last inspected on July 14, 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.