MAHOPAC, N.Y. -The Lake Mahopac Park District Board will conduct a fish survey on the lake this weekend to assess the health and size of the fish population there.

“Because of the Board’s efforts to seek an optimal and ongoing balance of sterile triploid carp to control the weed growth in the lake, it has recommended that a fish survey be conducted this year in order to gauge the current status of the lake’s fish population,” said  Board member Robert Frankel. “The survey will provide useful data for future years as carp supplementation is considered, and to better understand any broader effect that the presence of zebra mussels may have had.”

Zebra mussels are an invasive species that began inhabiting Lake Mahopac several years ago. They attach themselves to water intakes in the districts that provide drinking water for parts of Mahopac. Once they clog up the intakes and the screens, the town has to send divers in to clean them off and allow the water to flow through unobstructed.

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The survey will take place during the evenings of Friday and Saturday, Sept. 25 and Sunday, Sept. 26, from approximately 6 p.m. to midnight, weather permitting.

“The work will entail the use of generators and lighting,” Frankel said. “Residents should not be alarmed if they notice this work being performed."

Earlier this year, the Town Board approved moving ahead with a new fish survey. It will assess the state of the fishery, including what types of fish and to provide an estimate of their quantities. The last survey was performed by in 2015 and it found a healthy fish population consisting predominantly of smallmouth bass, largemouth bass, and bluegill.