Shadow Lake Dam, located in Mahwah, New Jersey, is a privately owned structure on Hohokus Creek with a primary purpose of recreation.
Wind
Humidity
Built in 1928, this earth dam stands at a height of 16 feet and has a length of 565 feet, providing a storage capacity of 72 acre-feet. With a significant hazard potential but a satisfactory condition assessment as of December 2021, the dam is regulated by the New Jersey Department of Environmental Protection and undergoes regular inspections.
The dam's maximum discharge capacity is 1600 cubic feet per second, serving a drainage area of 1.6 square miles and covering a surface area of 18 acres. Even though there are no associated structures, Shadow Lake Dam plays a crucial role in providing recreational opportunities while managing the water resources in the region. With Congressman Josh S. Gottheimer representing the area, the dam's emergency action plan was last revised in February 2018, ensuring preparedness in case of any unforeseen events.
Overall, Shadow Lake Dam is a vital infrastructure on Hohokus Creek, contributing to the conservation and recreational aspects of the area. Its historical significance, coupled with the ongoing regulatory oversight and satisfactory condition, highlights the importance of this earth dam in water resource management and climate resilience efforts in Bergen County, New Jersey.
Year Completed |
1928 |
Dam Length |
565 |
Dam Height |
16 |
River Or Stream |
Hohokus Creek |
Primary Dam Type |
Earth |
Surface Area |
18 |
Drainage Area |
1.6 |
Nid Storage |
72 |
Hazard Potential |
Significant |
Nid Height |
16 |