Harmful Algal Bloom Advisory

The New Jersey Department of Environmental Protection (DEP) has confirmed the presence of Harmful Algal Blooms in Byram Bay in Lake Hopatcong.  Samples were collected on June 18, 2019 at Byram Beach and Sand Harbor Beach with microcystins concentrations detected at 0.833ug/l and 1.347 ug/l respectively (Full Report Byram Bay). …

Lake Hopatcong Clean-up Quantities

Five years ago, during the first lake-wide cleanup, approximately 23,000 pounds of debris was pulled from along the 50-mile shoreline.  This year, the Lake Hopatcong Foundation partnered with the Lake Hopatcong Commission to organize the second lake-wide cleanup in during the 60-inch drawdown.  According to the Lake Hopatcong Foundation tally, …

Cyanotoxin Testing Results

On July 24, 2018, Princeton Hydro conducted the first of two cyanobacteria/cyanotoxin sampling events on Lake Hopatcong. Cyanotoxins are a family of compounds produced by blue-green algae (also called cyanobacteria) that can have negative impacts on the health of humans, pets and livestock. Blue-green algae tend to increase in magnitude …