John Grier Dam
Key Takeaway
John Grier Dam is classified as low hazard in South Carolina. It was completed in 1910 and is 116 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 23 ft (taller than 56.3% in SC) |
| Max Storage | 114 acre-ft |
| Normal Storage | 101 acre-ft |
| Surface Area | 13 acres |
| Year Completed | 1910 (116 years old) |
| NID ID | SC01095 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
JOHN CALVIN GRIER
Private
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Unknown 28 ftFrequently Asked Questions
What is the hazard classification of John Grier Dam?
John Grier Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates John Grier Dam?
John Grier Dam is owned by JOHN CALVIN GRIER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was John Grier Dam built?
John Grier Dam was completed in 1910, making it 116 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 John Grier Dam?
John Grier Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is John Grier Dam?
John Grier Dam 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 John Grier Dam last inspected?
John Grier Dam was last inspected on September 26, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.