Recently, a program has been implemented to substantially reduce the number of ducks and geese. Their droppings raise the level of phosphorus in the lake, leading to excessive growths of algae and milfoil. In 2003 the lake was treated with aluminum sulfate to encapsulate the phosphorus. A paddle boat, moored in the lake, is used to cut the milfoil. The fowl also leave pathogens in the lake which can cause Swimmer's itch. This shows the difficulty of maintaining water quality in a stagnant lake.
