Articles | Volume 25, issue 4
Research article
19 Apr 2021
Research article |  | 19 Apr 2021

Minimizing the impact of vacating instream storage of a multi-reservoir system: a trade-off study of water supply and empty flushing

Chia-Wen Wu, Frederick N.-F. Chou, and Fong-Zuo Lee

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Cited articles

Atkinson, E.: The feasibility of flushing sediment from reservoirs, Report OD137, HR Wallingford, Wallingford, UK, 1996. 
Basson, G. R. and Rooseboom, A.: Dealing with reservoir sedimentation, Water Research Commission, Report no. TT91/97, Pretoria, South Africa, 1997. 
Brandt, S. A. and Swenning, J.: Sedimentological and geomorphological effects of reservoir flushing: the Cachí Reservoir, Costa Rica, 1996, Geogr. Ann. A, 81, 391–407,, 1999. 
Bruk, S.: Methods of Computing Sedimentation in Lakes and Reservoirs. International Hydrological Programme, Project A.2.6.1., UNESCO, Paris, France, 1985. 
Cattanéo, F., Guillard, J., Diouf, S., O'Rourke, J., and Grimardias, D.: Mitigation of ecological impacts on fish of large reservoir sediment management through controlled flushing – The case of the Verbois dam (Rhône River, Switzerland), Sci. Total Environ., 756, 144053,, 2021. 
Short summary
This paper promotes the feasibility of emptying instream storage through joint operation of multiple reservoirs. The trade-off between water supply and emptying reservoir storage and alleviating impacts on downstream environment are thoroughly discussed. Operation of reservoirs is optimized to calibrate the optimal parameters defining the activation and termination of emptying reservoir. The optimized strategy limits the water shortage and maximizes the expected benefits of emptying reservoir.