Articles | Volume 29, issue 22
https://doi.org/10.5194/hess-29-6631-2025
https://doi.org/10.5194/hess-29-6631-2025
Research article
 | 
24 Nov 2025
Research article |  | 24 Nov 2025

Reconstruction of the reservoir water level–storage volume relationship based on the capacity loss induced by sediment accumulation and its impact on flood control operation

Qiumei Ma, Chengyu Xie, Zheng Duan, Yanke Zhang, Lihua Xiong, and Chong-Yu Xu

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Cited articles

Ahmad, M. J., Cho, G., and Choi, K. S.: Historical climate change impacts on the water balance and storage capacity of agricultural reservoirs in small ungauged watersheds, Journal of Hydrology: Regional Studies, 41, 101114, https://doi.org/10.1016/j.ejrh.2022.101114, 2022. 
Anon: Code for Reservoir Hydrologic and Sediment Survey, Ministry of Water Resources of the People's Republic of China, SL 339-2006, http://mwr.gov.cn/zwgk/gknr/201301/t20130124_1441526.html (last access: 23 October 2025), 2006. 
Bonnema, M. and Hossain, F.: Assessing the Potential of the Surface Water and Ocean Topography Mission for Reservoir Monitoring in the Mekong River Basin, Water Resources Research, 55, 444–461, https://doi.org/10.1029/2018WR023743, 2019. 
Brown, C. B.: Discussion of sedimentation in reservoirs by B. J. Witzig, Proceedings of the American Society of Civil Engineers, 69, 1493–1500, 1944. 
Brush, G. S.: Rates and patterns of estuarine sediment accumulation, Limnology & Oceanography, 34, 1235–1246, https://doi.org/10.4319/lo.1989.34.7.1235, 1989. 
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Short summary
We propose a method to estimate the reservoir water level–storage volume (WLSV) curve based on the capacity loss induced by sediment accumulation and assess the potential negative impact caused by outdated design WLSV curve on flood regulation risks. The findings highlight that when storage capacity is considerably reduced, continued use of design WLSV curves may significantly underestimate, thus posing potential safety hazards to the reservoir itself and downstream flood protection objects.
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