group of kayakers smiling for a picture as they float down Lake Hopatcong

Water Scouts

The Lake Hopatcong Water Scouts is a volunteer program dedicated to finding and removing water chestnut, an invasive aquatic plant that threatens the lake's ecosystem. Established by the Knee Deep Club in 2010 and managed by the Lake Hopatcong Foundation since 2013, the program trains and supports volunteers in the identification, monitoring, and removal of water chestnut.

Water chestnut can spread rapidly, crowding out native plants, degrading wildlife habitat, and interfering with recreation. It can be transported between waterbodies by boats, trailers, waterfowl, and other wildlife. Because a single plant can produce numerous seeds that may remain viable in lake sediments for years, early detection and removal are critical to preventing new infestations.

Water chestnut has been found in several areas of Lake Hopatcong over the years, including Landing Channel, the Woodport area near Liffy Island, the Jefferson Canals, and areas near Prospect Point Preserve. While volunteers have successfully reduced populations through ongoing monitoring and removal efforts, regrowth and the threat of new introductions remain. Shallow, sheltered areas of the lake are particularly vulnerable and require continued attention.

Volunteer Water Scouts monitor designated shoreline areas from their own kayak, canoe, paddleboard, or small boat throughout the growing season. If water chestnut is found, volunteers remove the plant and report their findings. Training and identification resources are provided.

By spending time on the water and keeping watch for this invasive species, Water Scouts play an important role in protecting the long-term health and recreational value of Lake Hopatcong.