An integrated modelling approach for assessing the effect of multiscale complexity on groundwater source yields

Upton, K.A.; Jackson, C.R.; Butler, A.P.; Jones, M.A.. 2020 An integrated modelling approach for assessing the effect of multiscale complexity on groundwater source yields. Journal of Hydrology, 588, 125113. 10.1016/j.jhydrol.2020.125113

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Abstract/Summary

A new multi-scale groundwater modelling methodology is presented to simulate pumped water levels in abstraction boreholes within regional groundwater models, providing a robust tool for assessing the sustainable yield of supply boreholes and improving our understanding of groundwater availability during drought. A 3D borehole-scale model, which solves the Darcy-Forchheimer equation in cylindrical co-ordinates to simulate both linear and non-linear radial flow to a borehole in a heterogeneous aquifer, is embedded within a Cartesian grid, using a hybrid radial-Cartesian finite difference method. The local-scale model is coupled to a regional groundwater model, ZOOMQ3D, using the OpenMI model linkage software, providing a flexible and efficient tool for assessing the behaviour of a groundwater source within its regional hydrogeological context during historic droughts and under climate change. The advantages of the new method are demonstrated through application to a Chalk supply borehole in the UK.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.jhydrol.2020.125113
ISSN:	0022-1694
Additional Keywords:	GroundwaterBGS, Groundwater, Groundwater modelling
Date made live:	21 Jul 2020 10:32 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/528190

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