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1991年,瑞士制定并实施了一项新的综合防洪政策。该政策要点如下:以滞洪取代泄洪;给河流更多的空间;在采取防洪工程措施前优先考虑土地利用规划;给予河道良好的维护以保持其初始流量;考虑到不确定性,采取灵活的手段确定防洪目标乃至参考洪水。为实施新政策,有必要通过河流湖岸生态地貌现状评价和开展协调研究项目来改进河流综合管理。
In 1991, Switzerland developed and implemented a new comprehensive flood protection policy. The key points of the policy are as follows: flood discharge is replaced by flood detention; more space is available for rivers; land use planning is prioritized before flood control engineering measures are taken; river courses are well maintained to maintain their initial flow rates; flexible methods are taken into account in light of the uncertainties Determine flood control targets and even reference floods. In order to implement the new policy, it is necessary to improve the integrated river management through the assessment of the ecological status of rivers and lakes and the coordination of research projects.