Studies on the development of water management system from the view point of river basin pattern

从社会和环境的角度出发，对日本几个具有代表性的大型河流流域进行了水管理研究，以开发一种适合未来农业管理的新的水管理系统。研究结果总结如下：1。水管理系统在很大程度上受各流域社会水文格局的影响，这些格局可分为几类。水利用系统被认为由两个系统组成。一种是将实际灌溉方案中从方案级到农田级的整个配排水系统中的所有水结构视为系统。二是由适当的机构对上述排灌设施进行管理、运行和维护的制度。在每个流域中，水结构系统与其管理系统之间存在着相互依存关系。并阐明了上述两种制度之间的相互关系是作为历史动态而不断变化的。未来的水管理体系目标应该从每个流域的水管理是独立的角度来建立，因此，水管理应该被视为每个流域特征的完整表达。

Water management studies for several representative large river basins in Japan were done in order to develope a new water management system that is suitable for the future agricultural administration, from the view point of social and invironmental condition. And the results were summarized as follows.1. The water management system is largely influenced by the social and hydrological patterns of each river basin, and these patterns could be divided into several classes.2. The Water utilization system was considered to consist of two systems. One is the system which is regarded as all water structures throughout the water distribution and drainage system from the scheme level to the farm level in the actual irrigation scheme. And the other one is the system for management, operation and maintenance of the above irrigation and drainage facilities by an appropriate organization.3. In each river basin, there has been an interdependency between the system of water structures and their management system. And it also clarified that the above mutual relationship between two systems has been changing as historical dynamics.4. Future objective of water management system should be established from the view point that water management in each river basin is independent, and for this reason, the water management is regarded as a complete expression of characteristics for each river basin.