Abstract
There are increasingly important challenges associated with assessing the potential non-point source (NPS) pollution hazards which result from regionalscale agricultural activities. The increasing availability of geographic information system (GIS) technology to those involved in assisting with land-use decisions has resulted in the proliferation of multicolored maps for many environmentally sensitive issues. How useful are these maps to those in the decision-management arena? The focus of this chapter, relative to assessing NPS pollution in a GIS framework, is what the status and shortfalls of regional-scale NPS vulnerability assessments are and what still needs to be done to make them more useful in the decision-management arena.
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