Spatial analysis by way of weighted overlay was used to determine possible locations where the Boran cattle may strive. By considering elevation and annual rainfall data within the Dry Kolla agro-ecological zone of Ethiopia, one could extract a refined suitability map for the Boran. Within the Dry Kolla ‘mask’, one would extract the two variables or layers (elevation and rainfall) and conduct a simple statistical description by which the means and standard deviations are determined. Classes of suitability are assigned around the mean values according to their standard deviation. A weighted overlay of the two layers defines the final suitability.
