The significance of changing reservoir operation idea and carrying out scientific reservoir regulation is expounded;the prerequisities about carrying out scientific reservoir regulation are analyzed with the case of Danjiangkou Reservoir regulation;and it is shown that to achieve the win-win ends of flood controlling and interests promoting is feasible indeed.

Environment influence commentary of flood prevention project of Xihe River in city zone segment;

Role of Sanliping Reservoir and Siping Reservoir in flood prevention of mid-lower reaches of Hanjiang River;

On the effects of crossing bridge on flood prevention and irrigation;

Ecological benefit and influence of Guilin flood control and Lijiang water-replenishment project;

Study on urban construction and urban flood control criterion;

Measures for flood control of project of canals close to mountains——Taking Xiganqu Canal in Ningxia as an example;

Analyzing the roles of the water conservancy projects in the flood-control of Chuhe River;

The paper has done the analysis and calculation of the water flow movement in the lower reach of Dagangshan hydraulic as well as the influence of the project of Yongjiu bridge and excavation waste dump on the flood-control.

This article describes from the effect and the benefit of the non-engineering measures for flood protection that the non-engineering measures for flood protection is a modern tech-nique with the less investment.

The existing problems of the Yellow River dykes and the current flood protection situation are analyzed in the paper from the view of recent condition of the lower Yellow River dyke and protection project as well as "96·8"flood.