According to the characters of water saving irrigation ,the paper discussed the necessity of the application of decision support systems to this kind of irrigation.

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.