The Niyodo River is located in Kochi Prefecture, Japan. It is known for its clear blue waters, which are often described as "Niyodo Blue." The river flows through a picturesque landscape, surrounded by lush greenery and mountains, making it a popular spot for nature lovers and photographers. The river is approximately 70 kilometers long and is a tributary of the Kochi River. It is also famous for its diverse ecosystem, which includes various fish species and plant life. The Niyodo River is a popular destination for activities such as kayaking, fishing, and hiking along its scenic banks.