Shannon Lake Dam

TR-ROCKY CREEK· Greenville, South Carolina· Built 1963· 27 ft tall
High Hazard Recreation Private

Key Takeaway

Shannon Lake Dam is classified as high hazard in South Carolina. It was completed in 1963 and is 63 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 27 ft (taller than 70.9% in SC)
Max Storage122 acre-ft
Normal Storage92 acre-ft
Surface Area10 acres
Year Completed1963 (63 years old)
NID IDSC01792

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: April 11, 2022
State Regulated: Yes
Regulatory Agency: SC DHEC

Ownership

SHANNON LAKE INC

Private

Nearby Dams

Hartness International Dam 1

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Oak Grove Lake Dam

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High Hazard 29 ft

Huntington Lake Dam

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Stonebrook Farm Sd Lake Dam

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Carisbrooke Subdivision Dam

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Jimmy Rice Pond Dam

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High Hazard 27 ft

Lake Fairfield Dam

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High Hazard 23 ft

Laurel Lake Subdiv Dam

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High Hazard 32 ft

Frequently Asked Questions

What is the hazard classification of Shannon Lake Dam?

Shannon Lake 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 Shannon Lake Dam?

Shannon Lake Dam is owned by SHANNON LAKE INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Shannon Lake Dam built?

Shannon Lake Dam was completed in 1963, making it 63 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 Shannon Lake Dam?

Shannon Lake Dam 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 Shannon Lake Dam?

Shannon Lake Dam has a dam height of 27 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 Shannon Lake Dam last inspected?

Shannon Lake Dam was last inspected on April 11, 2022. 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.