Hopatcong meeting highlights road‑salt buildup, boathouse damage from ice creep and planned lake treatment trial

At the March 5 Hopatcong Borough Council meeting, a resident speaker presented photographs and first‑hand observations showing large roadside deposits of road salt near Lake Hopatcong and outlined damage to lakeside boathouses caused by moving ice, while borough leaders described a planned Princeton Hydro trial funded by the U.S. Army Corps of Engineers’ Engineer Research and Development Center to test near‑shore algal control methods.

The resident speaker said piles of salt — in one photo “like 6 inches of salt” — had accumulated near curbs and driveways and, if not removed, “all this stuff ... would just wash into the lake.” The speaker also described a string of images showing a boathouse in Davis Cove pushed out of square by roughly 11 inches of ice and said an adjacent boathouse equipped with an ice‑retardant bubble system remained undamaged.

Why it matters: attendees linked visible salt deposits to water‑quality concerns and showed how uneven use of ice‑retardant systems can leave individual properties at risk. Speakers also said the town will need to balance safety on winter roads with methods that limit salt entering the lake.

The resident presenter described the ice damage as “ice creep,” a slow lateral movement of ice driven by solar heating and wind that, in the presented photographs, displaced pilings and door frames and left siding separating from roofs. “I heard all kind of popping, grunting, snapping, cracking,” the presenter said, describing two days of shifting ice that, in the presenter’s estimate, was 11–12 inches thick in places.

Council discussion and public questions focused on two related issues: how much road salt local crews apply and how property owners use mechanical and pneumatic ice‑retardant systems. One questioner asked about alternatives to salt; the presenter said the Adirondacks study he reviewed recommended more “judicious” application rather than elimination, and that local enforcement and equipment calibration were part of the solution.

Separately, borough officials described a separate, permit‑driven project to test treatments aimed at controlling near‑shore algal growth and improving oxygen conditions. Princeton Hydro has been awarded funding by the U.S. Army Corps of Engineers’ Engineer Research and Development Center (ERDC) to evaluate six treatment strategies on Lake Hopatcong in 2025, borough officials said. The presentation said one planned area of treatment is Crescent Cove Beach Club and that the contractor will pursue required state permits; the borough noted the New Jersey Department of Environmental Protection (NJDEP) has been notified and that state permitting will be followed.

Officials said the Princeton Hydro work will test non‑pesticidal products and early‑season benthic applications of registered algaecides in limited near‑shore zones; the presenter and the borough used the product name as spoken in the meeting, “PAK27,” described there as a copper‑based algaecide with an oxidizing action. Borough staff said they will seek permits from NJDEP and other required approvals before any treatments occur and that work will be done from off the beach (vehicles will not be driven onto the sand). The presentation described the pilot as a 50‑acre treatment area at Crescent Cove as part of multiple trial sites across the lake.

No formal council action was taken on the salt or ice‑retardant issues during the meeting; the discussion was presented for information and to inform possible future work with lake stakeholders and county partners. Borough staff and council members said they will follow up with county road crews and the borough Department of Public Works about salt‑spreading practices and are tracking reports that some county trucks may be using different equipment and brine systems.

What remains uncertain: presenters and council members stressed the need for further technical review. The speaker recommended direct study with the borough environmental commission and outside experts before policy changes. Borough staff said specific permit details and the exact product formulations for the Princeton Hydro trial will be posted once permits are secured.

The meeting concluded the lake topic with instructions that the environmental commission and borough staff continue information‑gathering and coordinate with county and state agencies.