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Research on Joint Operation of Flood Diversion and Storage Measures: A Case Study of Poyang Lake

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  • Shupan Deng

    (Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
    College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China)

  • Zhichao Wang

    (Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
    Jiangxi Key Laboratory of Flood and Drought Disaster Defense, Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China)

  • Longhua Wu

    (College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China)

  • Ting Wu

    (Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
    College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China)

  • Yang Xia

    (Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
    Jiangxi Key Laboratory of Flood and Drought Disaster Defense, Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China)

  • Yue Liu

    (Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China
    Jiangxi Key Laboratory of Flood and Drought Disaster Defense, Jiangxi Academy of Water Science and Engineering, Nanchang 330029, China)

Abstract

In recent years, flood hazards have occurred increasingly worldwide, posing significant threats to the safety of life and property in lacustrine and riverine environments. To mitigate the devastating impacts of floods, it is crucial to explore optimal strategies for joint flood diversion of flood diversion and storage measures (FDSM). The FDSM management of Poyang Lake in China focuses on studying semi-restoration polder areas (SR Polders) and flood storage and detention areas (FS Detentions), which are subjects of ongoing research. Existing studies primarily focus on SR Polders or FS Detentions, with limited research on the joint flood diversion potential of these two measures, particularly regarding optimal scheduling. This study takes 185 SR Polders and the Kangshan flood storage and detention area (KS Detention) as the primary research objects. By integrating hydraulic theory, numerical simulation techniques, and survey data, we develop a hydraulic model for the SR Polders and a hydrodynamic model for the KS Detention to carry out flood diversion simulation. The 1998 flood is chosen as a typical case to simulate and analyze their flood diversion processes under various schemes. The results indicate that altering the operation criteria for FDSM influences both the maximum diversion discharge and the timing of the main diversion period. For the SR Polders, under the current flood control scheme, raising the operation water level (OWL) of SR Polders-I by 1.0 m increases the maximum diversion discharge by 894 m 3 /s. Additionally, raising the OWL of SR Polders-II by 0.37 m delays the main diversion period by one day. For the KS Detention, higher flood diversion water levels correspond to greater discharge capacities. Furthermore, a fuzzy optimization method is applied to optimize nine joint schemes of the SR Polders and KS Detention. The results indicate that the optimal joint flood diversion strategy for Poyang Lake is operating SR Polders-I, SR Polders-II, and KS Detention at a Hukou water level of 21.65 m, 22.05 m, and 22.50 m, respectively. Finally, the study provides insights and recommendations for flood control management at Poyang Lake. The results of this study not only have important guiding significance for flood control management of large plain lakes but also provide references for the joint operation of flood diversion and storage areas in other regions.

Suggested Citation

  • Shupan Deng & Zhichao Wang & Longhua Wu & Ting Wu & Yang Xia & Yue Liu, 2025. "Research on Joint Operation of Flood Diversion and Storage Measures: A Case Study of Poyang Lake," Sustainability, MDPI, vol. 17(4), pages 1-24, February.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:4:p:1522-:d:1589603
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    References listed on IDEAS

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    1. Chinh Luu & Jason Meding & Sittimont Kanjanabootra, 2018. "Assessing flood hazard using flood marks and analytic hierarchy process approach: a case study for the 2013 flood event in Quang Nam, Vietnam," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 90(3), pages 1031-1050, February.
    2. Xianghu Li & Qi Zhang & Chong-Yu Xu & Xuchun Ye, 2015. "The changing patterns of floods in Poyang Lake, China: characteristics and explanations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 76(1), pages 651-666, March.
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