随着人口的增长和经济的发展，生活和生产需水日渐增多，水资源供需矛盾日益突出，而用水效率低、用水浪费现象也没有得到有效的控制。我国水资源当前所面临的严峻形势要求我们必须对水资源进行公平而合理的分配，提高水资源的利用效率，缓解供需矛盾。首先构建了多层次半结构性多目标模糊优选模型，并以赣江为例，用该模型对其水资源在各用水区域之间进行了分配，旨在对这种水量分配方法进行探讨和实践，以期为赣江流域水量分配工作提供一种可行的参考方法。

The population growth and economic development as well as the ever increasing demand for domestic and production water gave rise to a growing contradiction between water supply and demand. Low efficiency of water use and severe water waste have not been effectively controlled. It is imperative to allocate water fairly and reasonably, improve water use efficiency and alleviate the imbalance of water supply and demand. A semi-structural and multiobjective fuzzy optimal selection model is established and is taken to allocate water resources among all regions in Ganjiang River Basin. The approach is aimed at providing a viable method for the water allocation in the basin.