Lake Sebago Dam
Key Takeaway
Lake Sebago Dam is classified as high hazard in New York. It was completed in 1925 and is 101 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 | 30 ft (taller than 78.3% in NY) |
| Dam Length | 1,700 ft |
| Dam Type | Concrete |
| Max Storage | 4.3K acre-ft |
| Normal Storage | 3.6K acre-ft |
| Surface Area | 297 acres |
| Drainage Area | 10 sq mi |
| Year Completed | 1925 (101 years old) |
| NID ID | NY00772 |
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
NYSOPRHP - PALISADES INTERSTATE PARK COMMISSION
State Government
Nearby Dams
Pine Meadow Brook Dam
Rockland, NY
Low Hazard 22 ftChristie Brook Dam #1
Rockland, NY
Significant Hazard 25 ftPine Meadow Lake Dam
Rockland, NY
Significant Hazard 20 ftLake Skemonto Dam
Orange, NY
Significant Hazard 29 ftChristie Brook Dike
Rockland, NY
Low Hazard 25 ftLake Kanawauke Dam
Rockland, NY
High Hazard 20 ftBreakneck Pond Dam
Rockland, NY
Low Hazard 20 ftPine Grove Lake Dam
Rockland, NY
High Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Lake Sebago Dam?
Lake Sebago 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 Lake Sebago Dam?
Lake Sebago Dam is owned by NYSOPRHP - PALISADES INTERSTATE PARK COMMISSION (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Sebago Dam built?
Lake Sebago Dam was completed in 1925, making it 101 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 Lake Sebago Dam?
Lake Sebago 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 Lake Sebago Dam?
Lake Sebago Dam has a dam height of 30 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 Lake Sebago Dam last inspected?
Lake Sebago Dam was last inspected on July 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.