Calculations, parameters, and legends are adjusted fully automatically. These fully automated features of GIS Eco allow new users to immediately start with terrain spatial analysis images construction. Of course, soil prognoses need measured data on soils to be used, not only Digital Elevation Models. It shows from how large area could water be collected to a given pixel from all surrounding slopes.
Darker colors refer to larger values.
Due to unique features of GIS Eco, only several tens of seconds are needed to calculate such maps for a large DEM of about 2,000,000 grid nodes. In other programs, catchment area is available on mainframe computers. Such maps are useful for lake construction design, or for floods prediction. Depth values are available in each map point. It has been proven in the literature that flowlines converge in concave spurs and diverge in convex ones.