First Conn Lake South Bay Dike
Key Takeaway
First Conn Lake South Bay Dike is classified as low hazard in New Hampshire. Its primary use is recreation.
Physical Details
| Dam Height | 14 ft (taller than 42.1% in NH) |
| Dam Length | 390 ft |
| Dam Type | Earth |
| Max Storage | 39.0K acre-ft |
| Normal Storage | 16.0K acre-ft |
| Surface Area | 2,800 acres |
| Drainage Area | 82 sq mi |
| NID ID | NH01012 |
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
GREAT RIVER HYDRO LLC
Private
Nearby Dams
First Connecticut Lake Dam
Coos, NH
High Hazard 56 ftCoon Brook Bog Dam
Coos, NH
Low Hazard 10 ftShehan Pond Dam
Coos, NH
Low Hazard 25 ftBig Brook Bog Dam
Coos, NH
Significant Hazard 11 ftSecond Connecticut Lake Dam
Coos, NH
Low Hazard 28 ftBack Lake Dam
Coos, NH
Low Hazard 7 ftMurphy Dam
Coos, NH
High Hazard 106 ftMoose Falls Dam
Coos, NH
Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of First Conn Lake South Bay Dike?
First Conn Lake South Bay Dike 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 First Conn Lake South Bay Dike?
First Conn Lake South Bay Dike is owned by GREAT RIVER HYDRO LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of First Conn Lake South Bay Dike?
First Conn Lake South Bay Dike 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 First Conn Lake South Bay Dike?
First Conn Lake South Bay Dike has a dam height of 14 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 First Conn Lake South Bay Dike last inspected?
First Conn Lake South Bay Dike was last inspected on September 16, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.