Tone River

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Tone River
Tone River at Narita and Kawachi (2015)
Native name	利根川 (Japanese)
Location
Country	Japan
Physical characteristics
Source	Mount Ōminakami
• location	Minakami, Gunma
• coordinates	37°03′16″N 139°06′05″E / 37.05444°N 139.10139°E / 37.05444; 139.10139
• elevation	1,831 m (6,007 ft)
Mouth	Pacific Ocean
• location	Chōshi, Chiba
• coordinates	35°44′45″N 140°51′07″E / 35.74583°N 140.85194°E / 35.74583; 140.85194
• elevation	0 m (0 ft)
Length	322 km (200 mi)
Basin size	16,840 km2 (6,500 sq mi)
Discharge
• average	256 m3/s (9,000 cu ft/s)

The Tone River (利根川, Tone-gawa) is a river in the Kantō region of Japan. It is 322 kilometers (200 mi) in length (the second longest in Japan after the Shinano) and has a drainage area of 16,840 square kilometers (6,500 sq mi) (the largest in Japan). It is nicknamed Bandō Tarō (坂東太郎); Bandō is an obsolete alias of the Kantō Region, and Tarō is a popular given name for an oldest son.^[1] It is regarded as one of the "Three Greatest Rivers" of Japan, the others being the Yoshino in Shikoku and the Chikugo in Kyūshū.