The Lebanon Water Treatment Intake Dam, located on the Mascoma River in Grafton County, New Hampshire, serves as a crucial water supply structure for the city of Lebanon.
Wind
Humidity
Built in 1934, this concrete dam stands at a height of 16 feet and has a length of 140 feet, providing a storage capacity of 3.7 billion gallons of water. With a significant hazard potential but a satisfactory condition assessment, the dam is regulated, inspected, and enforced by the NHDES Dam Bureau to ensure its safety and functionality.
Despite its age, the Lebanon Water Treatment Intake Dam continues to play a vital role in water resource management, with a normal storage capacity of 0.92 billion gallons and a drainage area of 169 square miles. The dam's uncontrolled spillway, with a width of 93 feet, is designed to handle a maximum discharge of 5314 cubic feet per second to prevent potential flooding. The risk assessment for this structure is moderate, and appropriate risk management measures are in place to address any potential issues that may arise.
As a key component of Lebanon's water infrastructure, the Lebanon Water Treatment Intake Dam is essential for providing clean and safe drinking water to the local community. With regular inspections, a robust emergency action plan, and adherence to state regulatory standards, this dam exemplifies the importance of proper maintenance and management of water resources in the face of changing climate conditions.
Year Completed |
1934 |
Dam Length |
140 |
Dam Height |
16 |
River Or Stream |
MASCOMA RIVER |
Primary Dam Type |
Concrete |
Surface Area |
0.4 |
Drainage Area |
169 |
Nid Storage |
3.7 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
| Location | Reservations | Toilets |
|---|---|---|
Velvet Rocks Shelter
|
||
Storrs Pond Rec Area
|
||
Campsite 5
|
||
Campsite 12
|
||
Campsite 16
|
||
Campsite 14
|