Long Pond Dam, located in North Castle, Westchester County, New York, is a crucial part of the local recreational infrastructure, serving as a popular spot for outdoor activities since its completion in 1936.
Wind
Humidity
This earth dam spans 600 feet in length and stands at a height of 40 feet, creating a reservoir with a normal storage capacity of 115 acre-feet. The dam's primary purpose is recreation, providing a surface area of 11 acres for water-based activities on the Mianus River.
Despite its recreational value, Long Pond Dam is rated as having a significant hazard potential and a poor condition assessment. The dam's last inspection in April 2019 highlighted these concerns, leading to a moderate risk assessment. The New York State Department of Environmental Conservation (NYS DEC) has regulatory oversight of the dam, with permitting, inspection, and enforcement authority to ensure public safety and environmental protection. Given its importance for both water resources and climate enthusiasts, ongoing monitoring and risk management measures are essential to safeguard the dam's integrity and surrounding ecosystems in the face of changing weather patterns and increasing water demands.
Year Completed |
1936 |
Dam Length |
600 |
Dam Height |
40 |
River Or Stream |
MIANUS RIVER |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
0.46 |
Nid Storage |
174 |
Hazard Potential |
Significant |
Nid Height |
40 |
| Location | Reservations | Toilets |
|---|---|---|
Ward Pound Ridge Reservation
|
||
Croton Point Park
|
||
Mountain Lakes Park
|