Cuthbert et al. (2009) present an interesting and detailed study of the effects that superficial glacial deposits have on recharge to a bedrock aquifer, in this case the Permo-Triassic Sandstone of the Tern catchment in the West Midlands of England. In their discussion they suggest that the current recharge model used by the Environment Agency may not be adequate for the purposes of groundwater abstraction management because it oversimplifies recharge processes through the superficial deposits. In the present discussion paper this point is further explored with reference to the original management objectives of the Environment Agency project that produced...

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