Moulouya River
Although the Marinids claimed Arab ancestry through a North Arabian tribe, they were of Berber origin. Following the arrival of the Arab Bedouins in North Africa in the middle of the eleventh century, the Marinids were obliged to leave their lands in the region of Biskra, in present-day Algeria. They first frequented the area between Sijilmasa and Figuig, present-day Morocco, at times reaching as far as the , present-day Algeria. They would move seasonally from the Figuig oasis to the Moulouya River basin. Following the arrival of Arab tribes in the area in the 11th-12th centuries, the Marinids moved to the north-west of present-day Algeria, before entering "en-masse" into Morocco by the beginning of the 13th century.