Pleasant Lake Dam in Deerfield, New Hampshire, is a state-regulated structure with a primary purpose of recreation.
Wind
Humidity
Completed in 1921, this Earth dam stands at a height of 7 feet and spans 225 feet in length, providing a normal storage capacity of 552 acre-feet. The dam is located on the TR Little Suncook River and is under the jurisdiction of the NHDES Dam Bureau.
Despite its low hazard potential and satisfactory condition assessment, Pleasant Lake Dam poses a moderate risk, as indicated by its Risk Assessment rating of 3. With a maximum discharge of 94 cubic feet per second and an uncontrolled spillway type, the dam's emergency action plan status and risk management measures are currently unspecified. Regular inspections, with the last conducted in November 2017, help ensure the dam's structural integrity and public safety.
Enthusiasts of water resources and climate will find Pleasant Lake Dam an interesting case study, showcasing the intersection of recreational use, regulatory oversight, and risk management in maintaining a historic structure that plays a vital role in managing water resources in Rockingham County, New Hampshire.
Year Completed |
1921 |
Dam Length |
225 |
Dam Height |
7 |
River Or Stream |
TR LITTLE SUNCOOK RIVER |
Primary Dam Type |
Earth |
Surface Area |
478 |
Drainage Area |
3.5 |
Nid Storage |
2000 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
7 |
Suncook River At North Chichester
|
62cfs |
Soucook River
|
22cfs |
Cocheco River Near Rochester
|
23cfs |
Oyster River Near Durham
|
2cfs |
Isinglass R At Rochester Neck Rd
|
20cfs |
Lamprey River Near Newmarket
|
42cfs |