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Encompassing 155 acres and with over 27 miles of shoreline, Deal Lake is the largest of New Jersey’s coastal lakes. The lake’s 4,400-acre watershed is highly developed, with the majority of the watershed developed in the 1940s-1960s. As a result, stormwater management, particularly with respect to water quality and volume management, is largely lacking. Since 1980, the Deal Lake Commission (DLC) has served as the State-appointed steward of the lake. Princeton Hydro secured the DLC $450,000 in 319(h) funding to implement the lake’s New Jersey Department of Environmental Protection-approved Watershed Protection Plan. Using the 319(h) funding, the DLC implemented three projects aimed at decreasing pollutant loading and restoring heavily eroded sections of the Deal Lake shoreline.
This project involved the installation of a manufactured treatment device (MTD). The MTD installation was complicated by the site’s existing development and sub-surface infrastructure. Post-installation field testing and STEPL modeling conducted by Princeton Hydro confirmed that the MTD significantly decreased the pollutant loading from one of the lake’s major stormwater outfalls.
Princeton Hydro was responsible for the field testing, engineering design, and permitting of three bioinfiltration basins constructed at the Colonial Terrace Golf Course. Field testing showed each basin is capable of fully infiltrating the runoff generated by storms as great as 1.5 inches per hour. In addition, over 300 feet of eroded shoreline was stabilized with native plants. Doing so helped create a dense buffer that inhibits passage of Canada geese from the lake onto the golf course.
Princeton Hydro was responsible for the field testing, engineering design, and permitting for this project. Coir fiber logs were used to stabilize an approximately 250-foot segment of highly eroded shoreline. Princeton Hydro also implemented an herbicide treatment program to eliminate Japanese knot weed and Common Reed (phragmites australis) and then replanted the shoreline with native vegetation. The final element of the project involved the construction of a bioretention rain garden to control the runoff from the boat launch parking area.
This project received a North American Lake Management Society Technical Merit Award
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PRINCETON HYDRO
PRINCETON HYDRO