Kariono Iro - Kariono Iro

...The largest river in Oita prefecture, originating from Mt. Sobo, which stands on the border between Oita and Miyazaki prefectures, and flowing northeast through the center of the prefecture. The main river length is 107 km, and the total drainage area is 1,460 km2. It collects many tributaries, such as the Inaba River, Ogata River, and Okudake River, and empties into Beppu Bay at Tsurusaki in Oita city. The Toyohashi Main Line runs almost along this valley, forming the eastern part of the Oita Plain downstream, and is used as a water source for the Oita-Tsurusaki coastal industrial area built at the mouth of the river, as well as a source of water for the well-developed irrigation canals in the basin. In particular, the many irrigation canals (such as the Kariono Iro) associated with Kumazawa Banzan, which can be seen in the Takeda Basin area upstream, are famous. ...

*Some of the terminology that refers to "Karionoi Road" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…大分･宮崎県境にそびえる祖母山に源を発し，大分県中央部を北東流する県下最大の河川。幹川流路延長107km，全流域面積1460km2。稲葉川，緒方川，奥岳川など多くの支流を集めて，大分市鶴崎で別府湾に注ぐ。豊肥本線がほぼこの谷に沿い，下流に大分平野東部を形成し，河口に建設された大分･鶴崎臨海工業地域の用水源として，また流域によく発達した用水路の水源として利用されている。とくに上流域竹田盆地一帯にみられる熊沢蕃山ゆかりの多くの用水路(刈小野（かりおの）井路ほか)は有名。…

※「刈小野井路」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報