The incline is uniformly to the south-east, and apart from the few coast streams that reach the Gulf of Aden during the rains, all the running waters are collected in three rivers - the Nogal in the north, the Webi Shebeli in the centre, and the Juba (q.v.) I See also Abyssinia.
The Nogal sends down a turbulent stream during the freshets, while the Shebeli, notwithstanding the far greater extent of its basin, does not reach the sea.
The antelopes include the beisa oryx, fairly common and widely distributed; the greater and lesser kudu (the greater kudu is not found on the Ogaden plateau); the Somali hartebeest (Bubalis Swaynei), found only in the Haud and Ogo districts; waterbuck, rare except along the Webi Shebeli and the Nogal; the dol or Somali bushbuck; the dibatag or Clarke's gazelle; the giraffe-like gerenuk or Waller's gazelle, very common; the aoul or Soemmering's gazelle, widely distributed; the dero (Gazella Speki); and the small dikdik or sakaro antelope, found in almost every thicket.
The Hawiya domain comprises the Ogaden plateau and the region generally between the Nogal and Webi-Shebeli rivers.
At the instance of the Indian government surveys of the country between the coast and the Webi-Shebeli and also east towards the Wadi Nogal were executed by Major H.
To this succeeds the Nogal district, separated both from the Sorl and the Haud by ranges of low hills.
The Nogal and the neighbouring regions of the Haud are also known, from the tribes inhabiting them, as the Dolbahanta country.
The mullah now broke away to the north, and, crossing the line of the British communication, established himself in the Nogal district.
In October 1903 a new forward movement was begun, the mullah being still in the eastern Nogal, while he had also seized the Italian seaport of Illig, north of Obbia.
In a pitched battle fought on the 10th of January 1904 at Jidballi in the Nogal country the enemy were routed, losing over loon men in killed alone, while the British loss in killed and wounded was 58.
This region, that of the lower Nogal, included the port of Illig.