Stone Pond Overflow Dam, located in Marlborough, New Hampshire, is a privately-owned structure that serves primarily for recreational purposes.
Wind
Humidity
This earth dam, standing at a height of 6.25 feet and a length of 75 feet, helps regulate the flow of Stone Pond Brook and provides a storage capacity of 189 acre-feet. With a surface area of 76 acres and a drainage area of 0.85 square miles, the dam has a low hazard potential and is classified as being in fair condition according to a 2019 assessment.
Managed by the NHDES Dam Bureau, the Stone Pond Overflow Dam features an uncontrolled spillway type with a width of 10 feet, capable of discharging up to 124.8 cubic feet per second. The dam has undergone regular inspections, with the last one conducted in November 2019, and is subject to state regulation, permitting, inspection, and enforcement. Despite a moderate risk assessment rating, the dam is considered safe for its intended purpose and serves as an important asset for water resource and climate enthusiasts in the region.
Dam Length |
75 |
Dam Height |
6.25 |
River Or Stream |
STONE POND BROOK |
Primary Dam Type |
Earth |
Surface Area |
76 |
Drainage Area |
0.85 |
Nid Storage |
189 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
6 |
Spicket River At North Salem
|
4cfs |
Exeter River At Haigh Road
|
15cfs |
Spicket River Near Methuen
|
12cfs |
Beaver Brook At North Pelham
|
10cfs |
Parker River At Byfield
|
0cfs |
Merrimack R Nr Goffs Falls
|
1310cfs |