About
The Hoanib is one of the 12 ephemeral seasonal rivers in the west of Namibia, where it was the border between northern Damaraland and Kaokoland. Its length is 270 km. With the low population density, the oasis character of the river valley and the relatively high wildlife population of Hoanib, together with the Hoarusib its valley is one of the last true wilderness areas in Namibia, one of the last settlements of desert elephants and shows strong wind and water eroded and weathered stone deposits (up to 10 m height). Inflows of Hoanib are Ombonde, Ganamub, Mudorib and Tsuxab. == Hydrology == The Hoanib's catchment area of 17,200 km ² extends from the west coast to Ojiovasando and the black peaks of the interior. It also includes the resource-rich region Sesfontein, Warmquelle and the Khowarib Gorge. The highest point of the watershed is at 1800 m. The rainfall in the catchment area is sporadic and vary from 0 mm / yr in the west to 325 mm in the north east of the catchment. The proportion of area with less than 100 mm / yr is 71%. In only 12% of the catchment area is the annual rainfall over 300 mm. SOURCESWikipedia