Oirase River

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Oirase River
Oirase keiryuu.JPG
Oirase River gorge
Origin Lake Towada, Aomori & Akita Prefectures, Japan
Mouth Pacific Ocean
Length 67 km (42 mi)
Source elevation 401 m (1,316 ft)
Mouth elevation 0 m (0 ft)
Basin area 820 km2 (320 sq mi)

The Oirase River (奥入瀬川 Oirase-gawa?) is a river located in eastern Aomori prefecture, Japan.

The Oirase River is the only river draining Lake Towada, a large caldera lake on the border of Aomori and Akita Prefectures. The river flows in a generally eastern direction, through the municipalities of Towada, Rokunohe, Oirase and Hachinohe before exiting into the Pacific Ocean. The upper reaches of the river form a scenic gorge with numerous rapids and waterfalls, and is one of the major tourist attractions of the Towada-Hachimantai National Park. The lower reaches of the river are used extensively for irrigation.

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40°36′18″N 141°27′48″E / 40.604937°N 141.463306°E / 40.604937; 141.463306Coordinates: 40°36′18″N 141°27′48″E / 40.604937°N 141.463306°E / 40.604937; 141.463306 (river mouth)