Activities around the Sungai Paku Reservoir, such as fish farming using floating net cages (KJA), tourism, and oil palm plantations, are suspected of contributing organic matter and nutrients to the waters. This study aims to determine the water quality conditions through analysis of chlorophyll-a content and water quality in the Sungai Paku Reservoir, Kampar Kiri Subdistrict, Kampar Regency. T…