Smith Mountain Combination Pump Storage
Key Takeaway
Smith Mountain Combination Pump Storage is classified as high hazard in Virginia. It was completed in 1964 and is 62 years old. Its primary use is hydroelectric. 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 | 229 ft (taller than 99.7% in VA) |
| Dam Length | 816 ft |
| Dam Type | Arch |
| Max Storage | 1.2M acre-ft |
| Normal Storage | 1.2M acre-ft |
| Surface Area | 20,400 acres |
| Drainage Area | 1,024 sq mi |
| Max Discharge | 50,000 cfs |
| Year Completed | 1964 (62 years old) |
| NID ID | VA019002 |
Safety Information
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?
Ownership
Appalachian Power Company
Public Utility
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Smith Mountain Combination Pump Storage?
Smith Mountain Combination Pump Storage 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 Smith Mountain Combination Pump Storage?
Smith Mountain Combination Pump Storage is owned by Appalachian Power Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Smith Mountain Combination Pump Storage built?
Smith Mountain Combination Pump Storage was completed in 1964, making it 62 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 Smith Mountain Combination Pump Storage?
Smith Mountain Combination Pump Storage serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Smith Mountain Combination Pump Storage?
Smith Mountain Combination Pump Storage has a dam height of 229 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 Smith Mountain Combination Pump Storage last inspected?
Smith Mountain Combination Pump Storage was last inspected on April 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.