Green Swamp #1 Dam, located in Bloomingdale Borough, Passaic, New Jersey, is a state-owned earth dam with a primary purpose of water supply.
Wind
Humidity
Completed in 1926, this dam stands at a height of 29 feet and spans a length of 640 feet, creating a reservoir with a normal storage capacity of 41,700 acre-feet and a surface area of 2,400 acres. It is regulated, permitted, inspected, and enforced by the New Jersey Department of Environmental Protection, ensuring its safe operation and maintenance.
The dam, situated on Post Brook, falls under the jurisdiction of the Philadelphia District of the US Army Corps of Engineers. Its hazard potential is classified as high, yet its condition assessment as of October 2021 was deemed satisfactory. With a biennial inspection frequency, the dam has a comprehensive Emergency Action Plan in place, last updated in February 2022. While there are no associated spillways or locks, Green Swamp #1 Dam remains a crucial infrastructure for water resource management in the region, highlighting the importance of ongoing monitoring and risk management measures.
Representing a vital component of New Jersey's water supply infrastructure, Green Swamp #1 Dam plays a key role in flood control and water storage for the surrounding area. As part of Congressional District 11, it is supported by Representative Mikie Sherrill and serves as a critical asset for ensuring water security and environmental protection. With its historical significance and ongoing regulatory oversight, the dam exemplifies the intersection of engineering, policy, and climate resilience in safeguarding water resources for future generations.
Year Completed |
1926 |
Dam Length |
640 |
Dam Height |
29 |
River Or Stream |
Post Brook |
Primary Dam Type |
Earth |
Surface Area |
2400 |
Drainage Area |
94.4 |
Nid Storage |
41700 |
Hazard Potential |
High |
Nid Height |
29 |