Otagawa River

Japanese: 太田川 - おおたがわ
Otagawa River

A river that flows through the western part of Hiroshima Prefecture and empties into Hiroshima Bay. It is a first-class river. It originates from Mount Kanmuri (1,339 meters) near the border between Yamaguchi and Shimane Prefectures, meanders eastward through the Chugoku Mountains, and merges with the Misasa River, which flows from the eastern part of the prefecture, in the northern part of Hiroshima City. It turns south near the confluence with the Misasa River, and in Hiroshima City it splits into six rivers: the Enko River, the Kyobashi River, the Motoyasu River, the Ota River (main river), the Tenma River, and the Ota River Floodway, forming a delta. It is 103 kilometers long and has a drainage area of ​​1,710 square kilometers. There are many gorges in the upper reaches of the Chugoku Mountains, and the tributary, the Shiwaki River, has the Sandankyo Gorge, a special national scenic spot. From the confluence with the Misasa River to Hiroshima Bay, about 20 kilometers south, it forms the Hiroshima Plain, an alluvial plain. "Tatara iron-making," once common in the Chugoku Mountains, was banned in the Ota River basin because it caused flooding. During the feudal era, boat transport was available to the present-day Akiota Town, and it was a major artery of transportation within the Hiroshima domain, but in the early Showa period, this was replaced by land transportation. The river basin is a forestry region, and hydroelectric power generation is also actively carried out.

[Kitagawa Kenji]

[References] | Kanmuriyama Mountains | Sandankyo | Tatara | Hiroshima Bay | Misasa River
Sandankyo
Sandan Falls. Western Chugoku Mountains Quasi-National Park. Nationally designated special scenic spot. Akiota Town, Yamagata County, Hiroshima Prefecture. © Hiroshima Prefecture .

Sandankyo


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

広島県西部を流れて広島湾に注ぐ川。一級河川。山口・島根県境に近い冠山(かんむりやま)(1339メートル)に発し、中国山地を嵌入(かんにゅう)蛇行しながら東流し、広島市北部で、県東部から流れてきた三篠(みささ)川と合流する。三篠川との合流点付近から向きを南に転じ、広島市街で猿猴(えんこう)川、京橋川、元安(もとやす)川、太田川(本川)、天満(てんま)川、太田川放水路の六つに分かれ、デルタを形成する。延長103キロメートル、流域面積1710平方キロメートル。中国山地を流れる上流部には峡谷が多く、支流柴木川(しわきがわ)には国の特別名勝の三段峡がある。三篠川との合流点以南から広島湾までの約20キロメートルは、沖積平野である広島平野を形成する。かつて中国山地に多くみられた「たたら製鉄」は、洪水を招くので太田川流域では禁止されていた。藩政時代には現在の安芸太田(あきおおた)町まで舟運があり、広島藩内の交通の大動脈であったが、昭和初年には陸上交通にとってかわられた。流域は林業地帯をなし、また水力発電が盛んに行われている。

[北川建次]

[参照項目] | 冠山山地 | 三段峡 | たたら | 広島湾 | 三篠川
三段峡
三段滝。西中国山地国定公園域。国指定特別名勝 広島県山県郡安芸太田町©広島県">

三段峡


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