The Nahr al-Kabir, also known in Syria as al-Nahr al-Kabir al-Janoubi or in Lebanon simply as the Kebir, is a river in Syria and Lebanon flowing into the Mediterranean Sea at Arida. The river is 77.8 km (48.3 mi) long, and drains a watershed of 954 km2 (368 sq mi). Its headwaters are at the Ain as-Safa spring in Lebanon and it flows through the Homs Gap in the Orontes River Valley of southern Syria.