Summary

Groundwater flow in the Chalk Aquifer at Lulworth is discordant with the surface drainage pattern as a result of flow reversal consequent upon coastal breaching of the aquifer. Siting of boreholes for water supply is thus made difficult, especially since flow is confined to very narrow zones. The use of geophysical techniques has enabled such zones to be identified with varying degrees of certainty. It is important not to place too much reliance on a single technique and to integrate such surveys into an overall appreciation of the evolution of the groundwater flow regime in order to obtain maximum benefits.

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