Abstract: To maintain the health of river's eco-system has become an inevitable tendency of basin management. In this research, an assessment system for the sustainable development of basin water quality was established according to hydrologic, hydraulic, sediment geomorphology, and aquatic ecological factors. Typical indexes of basin water quality were selected and analyzed using multiple environmental factors analysis. Suzi river watershed was taken as a case study. Environmental factors which reflect the river health state were selected. This research could be a reference for the sustainable management and eco-environmental construction of the river.

Key words: river health, assessment index, factor analysis, sustainable development, river water quality