In the neighborhood of Bosra, the springs of Mount Hermon descend in a torrent to the plain of Decapolis, or ten cities; and the Hieromax, a name which has been corrupted to Yermuk, is lost, after a short course, in the Lake of Tiberias. The banks of this obscure stream were illustrated by a long and bloody encounter.

On the opposite side of the Empire the rivers were less considerable. Among the most important may be mentioned the Sajur, a tributary of the Euphrates, the Koweik, or river of Aleppo, the Orontes, or river of Antioch, the Litany, or river of Tyre, the Barada, or river of Damascus, and the Jordan, with its tributaries, the Jabbok and the Hieromax.

Throughout nearly its whole course it is fringed by thickets of cane and oleander, while above, its banks are clothed with forests of oak. The Jordan receives the Hieromax about four or five miles below the point where it issues from the Sea of Tiberias, and the Jabbok about half-way between that lake and the Dead Sea.

It runs through a fertile country, and has generally a deep course far below the surface of the plain; ere falling into the Jordan it makes its way through a wild ravine, between rugged cliffs of basalt, which are in places upwards of a hundred feet in height. The Zurka, or Jabbok, is a stream of the same character with the Hieromax, but of inferior dimensions and importance.