CELORON — Chautauqua Lake Association workers began cleanup efforts for Burtis Bay starting Wednesday.

The south basin site of Chautauqua Lake has been home to a large buildup of aquatic native and invasive weeds that piled up significantly last year, and that biomass resulted in a fish kill in November 2018. After the incident prompted county officials and lake stakeholders to act, a plan was put in motion for a spring cleanup.