Ballard Pond Upper Dam, located in Derry, New Hampshire, was completed in 1941 and serves primarily for recreation purposes.
Wind
Humidity
The dam, made of earth and stone with a buttress core type, stands at a height of 7 feet and stretches 120 feet in length. It has a storage capacity of 415 acre-feet and covers a surface area of 93 acres, with a drainage area of 4.3 square miles.
Despite its low hazard potential, the dam's condition assessment is rated as poor, with the last inspection conducted in June 2018. The risk assessment for the dam is moderate, indicating a level 3 risk. The State of New Hampshire regulates and inspects the dam, with the NHDES DAM BUREAU being the state regulatory agency overseeing its operation and enforcement. The dam is situated on Taylor Brook and falls under the jurisdiction of the state, ensuring that it meets permitting and inspection requirements to ensure public safety and environmental protection. Water resource and climate enthusiasts can appreciate the importance of maintaining and monitoring dams like Ballard Pond Upper Dam to mitigate risks and safeguard water resources for future generations.
Year Completed |
1941 |
Dam Length |
120 |
Dam Height |
7 |
River Or Stream |
TAYLOR BROOK |
Primary Dam Type |
Earth |
Surface Area |
93 |
Drainage Area |
4.3 |
Nid Storage |
415 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
7 |
Spicket River At North Salem
|
4cfs |
Beaver Brook At North Pelham
|
10cfs |
Spicket River Near Methuen
|
12cfs |
Merrimack R Nr Goffs Falls
|
1310cfs |
Exeter River At Haigh Road
|
15cfs |
Souhegan River At Merrimack
|
69cfs |