This report has attempted to develop a methodology for the identification of livestock operations with a potential to degrade water quality. Using criteria established from factors contributing to waste or nutrient export, potentially polluting farms can be identified on standard 1:10,000 scale air photographs. The methodology was tested on a sub-basin of the Ausable-River Watershed. It is assumed to be effective in any area typical of rural South Western Ontario. The ground truthing was conducted by farm operator interviews. The interviews identified a concern in the agricultural community about manure management and water quality. There is a need for strengthened programs providing technical and financial aid to implement remedial measures in problem areas.