Effect evaluation upon water environment improvement by river system network connecting construction in tidal river area

The river-lake system connection is an important strategy for solving the water environment problem and its implementation has important significance to the water environment improvement in tidal river area. In order to assess the improvement effect of water environment in tidal area by implementing the water system connecting works, a set of assessment index system and assessment method are put forward, the system includes the structural assessment system, water dynamic assessment system and water quality assessment system, which assess the improvement effect of river network structure, river network water dynamic and water quality respectively as well as the comprehensive water environment improvement effect. By the assessment index system and the field investigation and measured data, the water environment improvement effect in tidal river area of Haizhu district, Guangzhou City after river network system connecting works is assessed. The feasibility and practicability of assessment are proved.