Potential Impact of Flood Control Projects on Hydrological Processes in the Coastal Regions of the Taihu Basin, China

IF 2.6 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Journal of The American Water Resources Association Pub Date : 2025-02-24 DOI:10.1111/1752-1688.70003

Yu Xu, Kaixin Liu, Yushan Ma, Qiang Wang, Chao Gao

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Abstract

Due to the intensive human activities, lots of hydraulic facilities were constructed and have a significant impact on hydrological processes and spatial migration of urban floods. For coastal plain regions, the suffering from rainstorms and storm surges, which was always neglected in previous studies, makes the impact more complex. Thus, the potential impact was observed based on a hydrodynamic model with real-time operations of hydraulic systems. To improve the confidence of the simulation, a joint copula model between maximum rainfall and contemporaneous maximum tide water level was built, which makes up for the lack of consideration in previous coastal flood simulations. Results of quantitative simulation showed that the projects of the Large Encirclement Project in Suzhou urban (LEP) prevented the flood in urban areas efficiently but transferred the flood to the suburb. The Diversion-Drainage System along the Yangtze River (DDS) had a larger impact on the hydrological processes in the northern regions. This will be of great benefit to the flood management in the Taihu Basin.

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太湖流域沿海防洪工程对水文过程的潜在影响

由于人类活动的密集，大量的水利设施建设对城市洪水的水文过程和空间迁移产生了重大影响。对于沿海平原地区，暴雨和风暴潮的影响在以往的研究中一直被忽视，这使得影响更加复杂。因此，基于液压系统实时运行的水动力模型，观察了潜在的影响。为了提高模拟的置信度，建立了最大降雨量与同期最大潮汐水位的联合联结模型，弥补了以往沿海洪水模拟中缺乏考虑的不足。定量模拟结果表明，苏州城市大围城工程有效地抑制了城市洪水，但将洪水转移到郊区。沿江引水系统对北方地区水文过程的影响较大。这对太湖流域的洪水治理具有重要的指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The American Water Resources Association 环境科学-地球科学综合

CiteScore

4.10

自引率

12.50%

发文量

100

审稿时长

3 months

期刊介绍： JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.