Topographic indices obtained computationally from the numerical model of elevation have been incorporated into computer algorithms and used in hydrological simulating processes, erosion and pollutant transport. Through these indices, zones of water accumulation in a catchment, for example, can be predicted using topographic index that take into account the slope orientation and land slope. This study aims to present a review of the literature on this topic by means of some examples applied in agricultural and environmental modelling.
topographic indexes; agricultural and environmental modelling; catchments
