Mountain Lake Dam

TR-MOUNTAIN CREEK· Greenville, South Carolina· Built 1889· 40 ft tall
High Hazard Recreation State Government

Key Takeaway

Mountain Lake Dam is classified as high hazard in South Carolina. It was completed in 1889 and is 137 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 40 ft (taller than 92.3% in SC)
Max Storage53 acre-ft
Normal Storage46 acre-ft
Surface Area4 acres
Year Completed1889 (137 years old)
NID IDSC01755

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: August 26, 2021
State Regulated: Yes
Regulatory Agency: SC DHEC

Ownership

SC DEPARTMENT OF PARKS RECREATION AND TOURISM

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mountain Lake Dam?

Mountain 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 Mountain Lake Dam?

Mountain Lake Dam is owned by SC DEPARTMENT OF PARKS RECREATION AND TOURISM (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mountain Lake Dam built?

Mountain Lake Dam was completed in 1889, making it 137 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 Mountain Lake Dam?

Mountain 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 Mountain Lake Dam?

Mountain Lake Dam has a dam height of 40 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 Mountain Lake Dam last inspected?

Mountain Lake Dam was last inspected on August 26, 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.