Physical-Chemical Characteristic and Trophic Status of Some Small Lakes in Ciliwung Watershed, West Java Indonesia

Small lakes are important freshwater resources to support the quality of human life. However, small in watershed becoming threatened ecosystems because increasing land-use changes and anthropogenic activity. The study aimed determine characteristic physical-chemical parameters trophic status some lake Ciliwung Watershed sustainable management preventing eutrophication effects. data was collected April June 2021. Measurement analysis water were conducted by insitu Laboratory. Some not accordance with Government Regulation number 22/2021 for class II criteria (WQC), including TSS (>50 mg.L-1)., TP (>0.03 mg.L-1), COD (>25 mg.L-1) DO (<3 especially Lake Sunter Cincin.There two groups based on status. Telaga Warna Cikaret, Cilodong classified as eutrophic while Cincin hypereutrophic Warna, Cilodong, located at upper middle watershed, eutrophic, characterized deeper bottom higher Secchi depth. At lower nutrients (TN TP), COD, temperature, conductivity, salinity, TDS. downstream area a densely populated that contributed high pollution from upstream watershed.