ABSTRACT
The study presents a model of computing two of the hydrological indices (time of concentration and runoff coefficient), by using some GIS extensions (AGWA, Spatial Analyst). Analyzing the digital elevation model and using data referring to the soil texture and land use in the Capus Basin, a number of parameters have been estimated, and then integrated in the calculus equations of these two indices. Knowing these indices is necessary in evaluating the water reserve in a hydrographic basin, and thus increasing the efficiency in hydrological hazard forecasting.