The Agano River is a prominent river located in Niigata Prefecture, Japan. It flows for approximately 200 kilometers, originating from the Mikuni Mountains and eventually emptying into the Sea of Japan. The river is known for its scenic beauty and is surrounded by lush landscapes, making it a popular spot for outdoor activities. The Agano River plays a significant role in the local ecosystem and economy. It supports various wildlife and is vital for agriculture in the region. Additionally, the river is famous for its clear waters, which are ideal for fishing, particularly for species like ayu (sweetfish).