Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 27, issue 3
Articles | Volume 27, issue 3
https://doi.org/10.5194/hess-27-761-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-27-761-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 27, issue 3
Research article
 | 
14 Feb 2023
Research article |  | 14 Feb 2023

Evidence-based requirements for perceptualising intercatchment groundwater flow in hydrological models

Louisa D. Oldham, Jim Freer, Gemma Coxon, Nicholas Howden, John P. Bloomfield, and Christopher Jackson

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Latest update: 20 Jan 2025
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Short summary
Water can move between river catchments via the subsurface, termed intercatchment groundwater flow (IGF). We show how a perceptual model of IGF can be developed with relatively simple geological interpretation and data requirements. We find that IGF dynamics vary in space, correlated to the dominant underlying geology. We recommend that IGF loss functions may be used in conceptual rainfall–runoff models but should be supported by perceptualisation of IGF processes and connectivities.
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