Stormwater collection system completed near Croton Falls Reservoir

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CARMEL – The New York City Department of Environmental Protection has completed a $2.8 million stormwater collection system to enhance the protection of the Croton Falls Reservoir. The system will protect water quality by capturing runoff, sediment and nutrients from a 15-acre drainage area in the Town of Carmel.

The project will collect stormwater runoff from an area of Carmel near Drewville Road, Drew Lane and Stoneleigh Avenue.

The community is located on a large peninsula on the northern side of Croton Falls Reservoir. DEP improved and reinforced an existing drainage trench that ran along Drewville Road to properly collect stormwater from the community.

That trench, known as a swale, feeds a new treatment stormwater detention basin that will capture sediment, debris and nutrients.

The basin will be surrounded by native trees, shrubs, and grasses that will consume some of the nutrients captured by the system.

The basin also includes an outlet structure that will allow clean water to pass into a stone-reinforced channel that leads to Croton Falls Reservoir.

The Drewville Road stormwater project was a requirement of New York City’s Filtration Avoidance Determination, the state permit that allows the city to operate its Catskill-Delaware Water Supply System without filtration.

While Croton Falls Reservoir generally operates at part of the city’s Croton Water Supply System, which is filtered, a pump station at the reservoir is capable of moving water into the unfiltered Delaware Aqueduct to support the city during times of draught or planned infrastructure outages.

 




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