Research progress and prospects of basin floodwater resource utilization

Abstract

[Objective] Influenced by the monsoon climate, the spatiotemporal distribution of precipitation within a year in China is extremely uneven. The annual distribution of runoff is mainly concentrated during the flood season and often exists in the form of floods. To ensure flood control safety, traditional flood control strategies mainly rely on rapid flood discharge. However, excessive reliance on a single flood discharge mode has led to a large amount of rain and floodwater resources failing to be effectively stored and utilized, exacerbating the shortage of water resources in the region during the non-flood season. Moreover, flood disasters often occur simultaneously with drought events in other regions. Floodwater resource utilization can not only aid in peak flow reduction and flood retention, but also alleviate regional water shortages caused by the uneven spatiotemporal distribution of precipitation. [Methods] Domestic and international research progress on the fundamental concepts and methodologies of floodwater resource utilization is reviewed, and prospects for inter-basin floodwater resource utilization are explored. [Results] The specific content includes:(1) outlining the concept of floodwater resource utilization potential and its evaluation method;(2) summarizing the regulation strategies for the utilization of floodwater resources in reservoirs and flood detention areas;(3) proposing regional and inter-basin floodwater resource utilization pathways and research directions. [Conclusion] Through a systematic analysis of the frontier advancements and challenges in floodwater resource utilization, the analysis can provide critical theoretical and methodological support for flood disaster analysis and scientific management. It offers new perspectives for alleviating the supply-demand contradiction of water resources across regions and basins, thereby supporting coordinated regional economic development.

Keywords

floodwater resource utilization potential / dynamic control of flood-limited water level / floodwater resource regulation strategies / multi-objective coordination / joint scheduling of reservoir groups / floodwater resource utilization pathways / inter-basin floodwater scheduling / water network projects