【高知】仁淀川、4年ぶりの「水質日本一」に – [Kochi] Niyodo River ranked Japan’s best in water quality for the first time in four years

仁淀川、4年ぶりの「水質日本一」に！
四国で唯一選出された“仁淀ブルー”の清流が再び輝く

高知県中部を流れる仁淀川が、国土交通省による2024年の水質調査において、4年ぶりに「水質が最も良好な河川」のひとつに選ばれました。全国160の一級河川を対象とした調査で、四国から唯一の選出。地域住民による継続的な環境保全の取り組みが、高い水質の維持につながったものと考えられます。

参考：報道発表資料：全国20河川が「水質が最も良好な河川」に
～令和６年は全国一級河川の97％で環境基準を満足～ – 国土交通省

Niyodo River named Japan’s cleanest river for the first time in four years! Shikoku’s only selected ‘Niyodo Blue’ clear stream shines again

The Niyodo River, which flows through central Kochi Prefecture, was selected as one of the ‘cleanest rivers’ in the 2024 water quality survey conducted by the Ministry of Land, Infrastructure, Transport and Tourism for the first time in four years. Out of 160 first-class rivers nationwide, it was the only one selected from Shikoku. This achievement is believed to be the result of continuous environmental conservation efforts by local residents, which have contributed to maintaining the river’s high water quality.

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仁淀ブルーの聖地『にこ淵』 – Niko Buchi, the sacred place of Niyodo Blue

高知県いの町にある「にこ淵（にこぶち）」は、仁淀川の支流・枝川にひっそりとたたずむ神秘の滝壺。透明度の高い水が、太陽の光や季節の角度によってブルーやグリーンへと変化し、”仁淀ブルーの聖地”として多くの人を魅了しています。古くから水神の化身・大蛇が棲む神聖な場所とされ、地元の人々に大切に守られてきました。そのため、入水・飲食・ゴミの持ち込みなどは禁止。訪れる際は静かに、自然と信仰への敬意を忘れずに。現在は新たな遊歩道や展望台が整備され、駐車場から無理なくアクセス可能になりました。目的地設定は「グリーンパークほどの」が便利。そこから約10分で幻想的な青の世界に出会えます。

Niko-buchi, located in Ino Town, Kochi Prefecture, is a mysterious waterfall nestled quietly along the Edogawa River, a tributary of the Niyodo River. The crystal-clear water changes colour from blue to green depending on the angle of the sun and the season, captivating many visitors as the ‘holy place of Niyodo Blue.’ Since ancient times, it has been regarded as a sacred place where a giant snake, the incarnation of the water god, dwells, and has been carefully preserved by the local community. Therefore, activities such as swimming, eating, drinking, and bringing in trash are prohibited. When visiting, please remain quiet and respect both nature and the sacred beliefs associated with the site. Currently, new walking paths and observation decks have been developed, making it easy to access from the parking lot. Setting your destination to ‘Green Park Chodo’ is convenient. From there, you can reach the enchanting blue world in about 10 minutes.

にこ淵
住所：高知県吾川郡いの町清水上分2976-11 [GoogleMaps]
連絡：088-893-1211（いの町観光協会）
*にこ淵周辺の自然環境を維持していくために、ご来訪の皆様は遊歩道入り口にある「にこ淵協力金」箱へお一人100円のご協力をお願いいたします。

Niko-buchi
Address: 2976-11 Shimizu-kami, Ino-cho, Agawa-gun, Kochi Prefecture [GoogleMaps]
Contact: 088-893-1211 (Ino-cho Tourism Association)
*To help maintain the natural environment around Niko-buchi, we kindly ask all visitors to contribute 100 yen per person to the ‘Niko-buchi Cooperation Fund’ box located at the entrance of the walking trail.

2024/07/27撮影

にこ淵。周辺トイレの案内板

募金箱。にこ淵周辺の自然環境を維持していくために、ご来訪の皆様は遊歩道入り口にある「にこ淵協力金」箱へご協力をお願いいたします。
Donation box. In order to maintain the natural environment around Nikobuchi, we ask visitors to make a donation to the ‘Nikobuchi Cooperation Fund’ box located at the entrance to the walking trail.