Bergen Basin Bending Weirs Reduce CSOs

The City of New York has an ongoing Combined Sewer Overflow (CSO) Long Term Control Plan (LTCP) Project that has identified interim CSO reduction measures to achieve earlier benefits, prior to finalization of the LTCPs. In the Jamaica Wastewater Treatment Plant service area, bending weirs are being installed at three regulator structures to achieve cost-effective CSO reductions. Bending weirs are passive devices that are designed to maximize upstream in-system storage and capacity for smaller and medium-sized storms, while allowing flows generated during larger storm events to discharge in a similar manner as they do without the bending weirs. The planning and design phases are complete, and construction is nearly complete at each of the three locations.