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Abstract
A procedure for erosion assessment representation by symbols, using aerial photography, is required for use at the local scale. This scheme (employing 1:10 000 scale orthophotomaps as a base) was developed within the Bethlehem Runoff Augmentation Research (BRAR) project as a preliminary to hydrological modelling for investigating changes in soil erosion rates. A full legend of the symbols, as well as a description of their relevance to erosion assessment is discussed. As overlays onto the orthophoto base-map, the graphic erosion data and a simple slope classification were found to be of use in defining erosion sensitive areas. Present soil erosion activity and localities that may be prone to a high erosion potential could be identified with a view to selecting experimental and monitoring sites. The suggested sequence of survey procedure is outlined and a list of potential uses for the map is proposed besides that for which it was initially designed. These range from detailed specific collection of data through regional land capability assessments to forming a part of a nationwide survey, such as that proposed by SARCCUS.