South Edwards
Key Takeaway
South Edwards is classified as significant hazard in New York. It was completed in 1914 and is 112 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 48 ft (taller than 91.6% in NY) |
| Dam Length | 215 ft |
| Dam Type | Concrete |
| Max Storage | 851 acre-ft |
| Normal Storage | 851 acre-ft |
| Surface Area | 81 acres |
| Drainage Area | 277 sq mi |
| Max Discharge | 5,104 cfs |
| Year Completed | 1914 (112 years old) |
| NID ID | NY00415 |
Safety Information
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?
Ownership
Erie Boulevard Hydropower, L.P.
Private
Nearby Dams
Niagara Mohawk Power Dam
St. Lawrence, NY
Significant Hazard 11 ftTalcville
St. Lawrence, NY
Low Hazard 13 ftFlat Rock
St. Lawrence, NY
High Hazard 67 ftHollow Dam
St. Lawrence, NY
Significant Hazard 31 ftBrowns Falls
St. Lawrence, NY
High Hazard 69 ftHarrisville
Lewis, NY
Low Hazard 25 ftTwin Lakes Dam
St. Lawrence, NY
Low Hazard 7 ftEmeryville
St. Lawrence, NY
Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of South Edwards?
South Edwards 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 South Edwards?
South Edwards is owned by Erie Boulevard Hydropower, L.P. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was South Edwards built?
South Edwards was completed in 1914, making it 112 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 South Edwards?
South Edwards 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 South Edwards?
South Edwards has a dam height of 48 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 South Edwards last inspected?
South Edwards was last inspected on June 15, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.