This illustrate the long and detailed work of Wuletawu during his Ph.D. His topic was modelling the whole hydrological cycle, meaning, all the components together with JGrass-NewAGE. In order to do this, he had to line up several tools, partition the basins, interpolate meteorological data, to go crazy when the data were not available. Calibrate the submodels, each one by each one with available data; doing educated guesses, when any other option was inexistent. He introduces the use of satellite data in JGrass-NewAGE, and, I think, he did it well. He never gave up when I bother him. And I think he did a god job.