Yoshino River

Japanese: 吉野川 - よしのがわ

A river that flows east through the center of Shikoku. It is commonly called Shikoku Saburo. Its total length is 194 km. It originates on the southern slope of the Ishizuchi Mountains, which occupies the center of the Shikoku Mountains, and flows east. It changes course north near the border between Kochi and Tokushima prefectures, and becomes a horizontal valley that crosses the Shikoku Mountains, forming the Oboke and Koboke gorges. It combines the Dozan River and the Iya River tributaries, flows east again, flows in a vertical valley along the Median Tectonic Line that forms the northern edge of the Shikoku Mountains, and empties into the Kii Channel in Tokushima City. It is the longest river in Shikoku, and its drainage basin covers four prefectures in Shikoku. In the upper reaches, it forms a deep gorge, and many dams have been built, making it a power source area for Shikoku. It has played an important role as a transportation route connecting the north and south of Shikoku since ancient times. Downstream from Ikeda in Miyoshi City is the Tokushima Plain, and the long, narrow valley bottom plain is mainly used for farming. The delta at the mouth of the river contains many new rice fields that were developed during the Edo period and is blessed with abundant water and groundwater, part of which forms the Tokushima Industrial District.

Yoshino River

A river that runs through central Nara Prefecture. It is 81 km long. It originates near Mt. Odaigahara, meanders and incises as it flows northwest, then flows west through the valley of the Median Tectonic Line near Yoshino Town, and enters Wakayama Prefecture, where it becomes the Kino River. Near Shimoichi Town and Gojo City, it forms two river terraces, with rice fields and settlements developed on the lower level. The upper reaches are a habitat for sweetfish, and the surrounding area is a production area for Yoshino cedar, where forestry is practiced. As part of the Yoshino-Kumano Comprehensive Development, Tsuburo Dam and other dams were constructed upstream, and there are many power plants.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

四国の中央部を東流する川。通称四国三郎。全長 194km。四国山地の中央部を占める石鎚山脈南斜面に発して東流，高知県，徳島県の県境付近で流路を北に変え，四国山地を横切る横谷となり，大歩危・小歩危の峡谷を形成する。銅山川，祖谷川の支流を合わせて再び東流，四国山地の北縁をなす中央構造線に沿って縦谷を流れ，徳島市で紀伊水道に注ぐ。四国第1の長流で，流域は四国4県に及ぶ。上流部では深い峡谷を形成し，多くのダムが建設されて四国の電源地帯になっている。古くから四国の南北を結ぶ交通路として重要な役割を果たしてきた。三好市の池田付近から下流は徳島平野で，細長い谷底平野では畑作が中心。河口部の三角州は江戸時代に開発された新田が多く，豊富な水量と地下水に恵まれ，その一部は徳島工業地区を形成している。

吉野川
よしのがわ

奈良県中部を貫流する川。全長 81km。大台ヶ原山付近に発し，穿入蛇行しながら北西流し，吉野町付近から中央構造線の谷を西流して和歌山県に入り紀ノ川となる。下市町，五條市付近では上下2段の河岸段丘を形成し，下段に水田や集落が発達している。上流はアユの生息地，その一帯は吉野杉の産地で林業が行われる。吉野熊野総合開発の一環として上流部に津風呂ダムなどが建設され，発電所が多い。

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Genzaburou Yoshino

>>: Yoshinogari ruins