HE Lei, FAN Tingjun, RAN Jing, XIE Ziang

Keywords： flood storage and retention area; floodplain; disaster prevention planning; resilience system; the United States

Abstract：

As crucial disaster mitigation spaces for regional flood resilience, the planning and management effectiveness of flood storage and detention areas is directly linked to the security of the river basin. In August 2023, a severe rainfall and flood disaster in the Haihe River Basin led to the urgent utilization of flood storage and retention areas, ensuring flood control safety for the capital region and important areas. However, it also resulted in significant damages to urban areas within these flood storage and retention areas. Faced with increasingly extreme rainfall and flood disasters, the contradiction between the economic and social development of urban areas within flood storage and retention areas and the protection of disaster mitigation space is becoming more prominent. How to scientifically carry out planning and pragmatic control of flood storage and retention areas under the context of territorial spatial planning is an important aspect of comprehensive disaster prevention planning in urban and rural planning. Drawing upon the planning and control experience of floodplains in the United States, this paper analyzes measures and methods in the dimensions of reducing disaster risks and establishing a comprehensive resilience system. It aims to provide references for the delineation, planning, and control optimization of flood storage and retention areas in China’s territorial spatial planning.

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