The Abukuma River (阿武隈川, Abukuma-gawa), with a length of 234 km (145 mi), is the second longest river in the Tōhoku region of Japan and the 6th longest river in Japan. It runs through Fukushima Prefecture and Miyagi Prefecture, rising from springs in the peaks of the Nasu mountains, collecting water from tributaries leaving the Ōu Mountains and the Abukuma Highlands, then emptying into the Pacific Ocean as a major river. It has a 5,390 km² area watershed, and about 1.2 million people live along its basin.