Upper Deerfield Lake Dam

TR-GREEN SWAMP· Sumter, South Carolina· Built 1960· 11 ft tall
Significant Hazard Recreation Private

Key Takeaway

Upper Deerfield Lake Dam is classified as significant hazard in South Carolina. It was completed in 1960 and is 66 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 11 ft (taller than 8.3% in SC)
Max Storage68 acre-ft
Normal Storage46 acre-ft
Surface Area8 acres
Year Completed1960 (66 years old)
NID IDSC01422

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: March 4, 2022
State Regulated: Yes
Regulatory Agency: SC DHEC

Ownership

UPPER DEERFIELD LAKE ASSOC LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Upper Deerfield Lake Dam?

Upper Deerfield Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Upper Deerfield Lake Dam?

Upper Deerfield Lake Dam is owned by UPPER DEERFIELD LAKE ASSOC LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Upper Deerfield Lake Dam built?

Upper Deerfield Lake Dam was completed in 1960, making it 66 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 Upper Deerfield Lake Dam?

Upper Deerfield 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 Upper Deerfield Lake Dam?

Upper Deerfield Lake Dam has a dam height of 11 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 Upper Deerfield Lake Dam last inspected?

Upper Deerfield Lake Dam was last inspected on March 4, 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.