Figure 12

(a) Digital elevation map [DEM], (b) main basin and sub basins with number of each subbasins, (c) stream orders of the selected basins and subbasins, (d) area of interest (aoi) and its subbasins and attributes with the main stream orders, (e) slop map [0°–55°]. (f) Hill shade map with the main stream order of wadi El Natrun Basin_5 and basins B_8 to B_17, the pale blue arrows pointed out the directions of surface water to wadi El Natrun and its vicinities all over the studied cases.