By the western bank of the Nile (Bahr-el-Jebel) to the point where the river is intersected by 5° 30' N., which parallel forms its northern frontier from the Nile westward to 30° E.
Elephants are abundant in the Bahr-el-Ghazal and Bahr-el-Jebel forests, and are found in fewer numbers in the upper valle y of the Blue Nile.
East of the Bahr-el-Jebel and north of the Bahr-el-Ghazal are vast prairies covered with tall coarse grass.
Lake No is little more than a depression into which the waters of the Ghazal system pass near the point of junction with the Bahr-el-Jebel.
Long from west to east, and the Bahr-el-Jebel, after passing through its eastern corner, changes its name to Bahr-el-Abiad or White Nile.
The lake has become the Bahr-el-Jebel, or Mountain river, as this section of the Nile is called.
The limits of Unyoro have varied according to the strength of its rulers; during the 19th century the states of Bunyoro and Buganda appear to have been rivals for the overlordship of the region between the Bahr-el-Jebel and the great lakes.
Like the Bahr-el-Jebel the Bahr-el-Ghazal is liable to be choked by sudd.