Water regulation and flood control of rivers are changing due to streamflow depletion following industrialization urbanization, significantly impacting aquatic ecosystems. Therefore, restoration the ecological environment is necessary maintain a healthy river ecosystem. For ecosystem restoration, amount discharge from dams must be controlled appropriate environmental flow calculated according f...

In this study, the concentrations and characteristics of copper (Cu), zinc (Zn), lead (Pb) contamination in sediment samples were investigated using aqua regia extraction Tessier’s five-step sequential extraction. Based on concentration metals, influence Hapcheon-Changnyeong weir sediments Nakdong River was assessed. The origins contaminants, their bioavailability, mobility determined Greater h...