Grass_Raster_FlowAccumulationService - This service could be used to compute flow accumulation from a raster digital elevation model (DEM) for hydrological anylysis.
Operations:
single_FlowDirection - Uses SFD (Single Flow Direction) method to compute flow accumulation. The moduel uses SFD-D8 algorithm and finds the route through the pits using a shortest path algorithm. multiple_FlowDirection - Uses MFD (Multiple Flow Direction) method to compute flow accumulation.
