The Nishiki is the main river in a larger system measuring 331.8 km in total.

The government of Japan classifies it as a second-class river system.

At its mouth in the part of the city of Iwakuni that was formerly the separate town of Nishiki, it drains into the Inland Sea.

The river is paralleled by the Nishikigawa Seiryū Line.

This article related to a river in Japan is a stub.