Based on abundant in-situ data, this paper analyzes the recent fluvial process of Nantong reach and the river-bed scouring and siltation at Xinda dock waters by applying the basic principle of fluvial process, and the cause of river-bed scouring and siltation at Xinda dock waters is concluded from construction impact, runoff i.

The established model and the calculation method is used to Nantong section of Yangtze River and the result is satisfactory.

Study on the evolution trend of the south branch of Changjiang Estuary in China based on bathymetry reversion method of visible remote sensing;

The overground section(Henan section) in lower reaches of the Yellow River is the most concentrated area of cities and population,and the industry and agriculture are developed while water consumption and demand are the largest.