Knowles Pond Dam, situated in Northfield, New Hampshire, is a vital structure regulated by the NHDES DAM BUREAU.
Wind
Humidity
Built in 1935, this earth dam serves primarily for recreation, offering a serene escape for water resource and climate enthusiasts. With a height of 11 feet and a length of 350 feet, Knowles Pond Dam boasts a storage capacity of 237 acre-feet and covers a surface area of 55 acres.
Although categorized as having a low hazard potential and assessed as satisfactory in condition, Knowles Pond Dam undergoes regular inspections, with the last one conducted in September 2019. The dam's spillway type is uncontrolled, with a maximum discharge capability of 76 cubic feet per second. Despite its moderate risk rating, the dam's emergency action plan status and inundation maps preparedness remain undisclosed. As a significant feature in the TR WILLIAMS BROOK watershed, Knowles Pond Dam stands as a testament to responsible water resource management and public safety.
Overall, Knowles Pond Dam serves as a valuable recreational resource in Merrimack County, New Hampshire, with its serene waters attracting visitors and nature enthusiasts alike. As a regulated structure with a solid track record of inspections, this dam represents a balance between human enjoyment and environmental stewardship. Its status as a low-hazard, satisfactory-condition dam underscores the importance of ongoing monitoring and risk assessment in safeguarding both the local community and the surrounding ecosystem.
Year Completed |
1935 |
Dam Length |
350 |
Dam Height |
11 |
River Or Stream |
TR WILLIAMS BROOK |
Primary Dam Type |
Earth |
Surface Area |
55 |
Drainage Area |
0.42 |
Nid Storage |
237 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Winnipesaukee River At Tilton
|
85cfs |
Merrimack River At Franklin Junction
|
857cfs |
Blackwater River Near Webster
|
19cfs |
Smith River Near Bristol
|
35cfs |
Suncook River At North Chichester
|
62cfs |
Soucook River
|
22cfs |