Articles | Volume 28, issue 17
https://doi.org/10.5194/hess-28-4203-2024
https://doi.org/10.5194/hess-28-4203-2024
Research article
 | 
12 Sep 2024
Research article |  | 12 Sep 2024

Developing water supply reservoir operating rules for large-scale hydrological modelling

Saskia Salwey, Gemma Coxon, Francesca Pianosi, Rosanna Lane, Chris Hutton, Michael Bliss Singer, Hilary McMillan, and Jim Freer

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Revised manuscript accepted for GMD
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Cited articles

Abeshu, G. W., Tian, F., Wild, T., Zhao, M., Turner, S., Chowdhury, A. F. M. K., Vernon, C. R., Hu, H., Zhuang, Y., Hejazi, M., and Li, H.-Y.: Enhancing the representation of water management in global hydrological models, Geosci. Model Dev., 16, 5449–5472, https://doi.org/10.5194/gmd-16-5449-2023, 2023. 
Adam, J. C., Haddeland, I., Su, F., and Lettenmaier, D. P.: Simulation of reservoir influences on annual and seasonal streamflow changes for the Lena, Yenisei, and Ob' rivers, J. Geophys. Res.-Atmos., 112, D24114, https://doi.org/10.1029/2007jd008525, 2007. 
Brown, C. M., Lund, J. R., Cai, X. M., Reed, P. M., Zagona, E. A., Ostfeld, A., Hall, J., Characklis, G. W., Yu, W., and Brekke, L.: The future of water resources systems analysis: Toward a scientific framework for sustainable water management, Water Resour. Res., 51, 6110–6124, https://doi.org/10.1002/2015wr017114, 2015. 
Carrillo, A. M. R. and Frei, C.: Water: A key resource in energy production, Energ. Policy, 37, 4303–4312, 2009. 
Coerver, H. M., Rutten, M. M., and van de Giesen, N. C.: Deduction of reservoir operating rules for application in global hydrological models, Hydrol. Earth Syst. Sci., 22, 831–851, https://doi.org/10.5194/hess-22-831-2018, 2018. 
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Reservoirs are essential for water resource management and can significantly impact downstream flow. However, representing reservoirs in hydrological models can be challenging, particularly across large scales. We design a new and simple method for simulating river flow downstream of water supply reservoirs using only open-access data. We demonstrate the approach in 264 reservoir catchments across Great Britain, where we can significantly improve the simulation of reservoir-impacted flow.
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