As present, automated monitoring of water quality in Han river has been operated at each water treatment plant. But the automated measurement sites must he choosen newly because water source in Seoul move to the upper stream of Chamshil weir. In this study, automated monitoring sites in Han river were reviewed, and the proper sites for automated monitoring of water quality have been selected by Qual2E model, RMA model, water sampling guidline, Sanders` method and topograpical characteristics of Han river is order to resonable operate. 8 sites have been selected as follows: ① the site of immediately after Paldang drainage ② the left site and a right site of Guuˇi water intake ③ the left site and a right site at Noryangjin(Han river bridge) ④ the site between Shingok weir and Anyangchun confluence point(Hangju bridge) ⑤ the site of Chungryangchun downstream(existence) ⑥ the site of Tanchun downstream(existence) ⑦ the site of Anyangchun downstream(existence) ⑧ the site of Wangsukchue downstream. The results proposed resonable operating management of network and economical system built up.