The Simuay River is a river in the Philippines with its source at Lanao del Sur in the Piapayungan range, and its mouth at is at Illana Bay through the Mindanao River.

This article related to a river in the Philippines is a stub.

You can help Wikipedia by expanding it.This article about a location in the Bangsamoro Autonomous Region in Muslim Mindanao is a stub.

You can help Wikipedia by expanding it.