Emma Lake Dam, located in Rockaway Township, New Jersey, plays a crucial role in flood risk reduction along the Rockaway River.
Wind
Humidity
This private-owned earth dam stands at 10 feet in height and spans 175 feet in length, providing a storage capacity of 90 acre-feet with a normal storage level of 72 acre-feet. Despite its low hazard potential, the dam's condition assessment is marked as poor, with the last inspection conducted in April 2004.
Managed by the New Jersey Department of Environmental Protection, Emma Lake Dam operates under state jurisdiction, with permitting, inspection, and enforcement protocols in place to ensure its structural integrity and safety. The dam's primary purpose of flood risk reduction aligns with its construction type, designed to withstand hydraulic pressures and potential high discharges. Although no major modifications or risk management measures have been reported, ongoing monitoring and maintenance are essential to uphold the dam's functionality and protect downstream areas from flooding incidents. As a notable structure in the region, Emma Lake Dam remains a significant component in the water resource management and climate resilience efforts of Morris County, New Jersey.
Dam Length |
175 |
Dam Height |
10 |
River Or Stream |
Rockaway River |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
0.2 |
Nid Storage |
90 |
Hazard Potential |
Low |
Nid Height |
10 |