Abstract
This article describes an exercise aimed at combining the pedological, climatological and hydrogeological factors which affect nitrate pollution of groundwater for the chalk aquifer of East Kent (including the Isle of Thanet), UK. A spatial model is developed using overlays of the relevant factors deemed to affect nitrate concentration at abstraction points, generally boreholes in the chalk. The output from the model is related to the land use pattern in the mid-1980s. This article shows how a risk-assessed, incrementally implemented set-aside policy might operate to maximize for environmental benefits and would be useful in the implementation of a Nitrate Sensitive Areas policy.
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