The Ussuri River is a significant waterway located in the Far East of Russia and northeastern China. It flows for about 897 kilometers and serves as a natural border between the two countries for part of its length. The river is a tributary of the Amur River, which eventually drains into the Sea of Okhotsk. The Ussuri River is known for its diverse ecosystem, supporting various species of fish and wildlife. It is also an important resource for local communities, providing water for agriculture and fishing. The river's basin is rich in natural beauty, featuring forests and mountains along its banks.