Nile

dark; blue, not found in Scripture, but frequently referred to
in the Old Testament under the name of Sihor, i.e., "the black
stream" (Isa. 23:3; Jer. 2:18) or simply "the river" (Gen. 41:1;
Ex. 1:22, etc.) and the "flood of Egypt" (Amos 8:8). It consists
of two rivers, the White Nile, which takes its rise in the
Victoria Nyanza, and the Blue Nile, which rises in the
Abyssinian Mountains. These unite at the town of Khartoum,
whence it pursues its course for 1,800 miles, and falls into the
Mediterranean through its two branches, into which it is divided
a few miles north of Cairo, the Rosetta and the Damietta branch.
(See EGYPT T0001137.)