Marine

USACE New York District – Potash Lake Weir Repair, Potash Lake and Ramapo River, Oakland, NJ

COASTAL successfully completed the repair of the Potash Lake weir, a crucial structure for water management at the confluence of Potash Lake and the Ramapo River in Oakland, New Jersey. This project, commissioned by the USACE New York District, was essential for maintaining the integrity of the local water system and ensuring the continued health of the aquatic ecosystem.

The repair involved replacing the damaged parts of the weir with a new steel sheet pile and grout bag weir across the 120-foot inlet of the Ramapo River. The construction team cleared the area to create an access trail, to facilitate the movement of materials and equipment to the site. A riprap platform was constructed across the river, allowing for the safe and efficient installation of the epoxy-coated steel sheeting, which varied in depth from 15 to 20 feet.

Marine divers played an important role in this project, removing the existing damaged grout bags and installing 14 new grout bags to ensure the weir’s stability and functionality. The entire operation was carried out under the challenging conditions of a flowing river, showcasing the team’s expertise in managing complex aquatic construction projects.

This repair not only restores the structural integrity of the weir but also enhances the water management capabilities of the area, safeguarding the local environment and supporting the community’s needs. Through diligent planning and execution, COASTAL has contributed to the sustainability and resilience of New Jersey’s waterways.