Northport Subwatershed Assessment

Project Location: Northport, NY
Client: Village of Northport

NPV was hired by the Village of Northport to assist the Village develop solutions for persistent flooding issues within the vicinity of Main Street and to address contributing areas and pollutant load to Northport Harbor. The Village approached the project in two phases, 1) conduct a sub-watershed assessment to identify the areas (or sub-watersheds) within the Village which contribute the most significant volumes of stormwater runoff and the greatest pollutant loads to the Northport Harbor, and 2) identify drainage improvement projects based on the results of the first phase. Potential drainage solutions were prioritized based effectiveness of both volume reduction and pollutant loads, availability of land and cost considerations. After careful consideration of the sub-watersheds, pollutant load modeling, and understanding of the watershed loads within the Village, NPV provided locations, feasibility, and cost estimates of potential projects to address non-point stormwater source abatements and reduction of stormwater with the use of green infrastructure improvements for water quality along with traditional stormwater infiltration practices. The projects were then subsequently ranked based on effectiveness of pollutant removal and stormwater volume controls.