Mas River

The Kali Mas ("Golden River" in Javanese), also known as Kali Surabaya, is a distributary of the Brantas River in East Java, flowing north-easterly towards the Madura Strait. This river also forms part of the border between the Sidoarjo and Gresik regencies of East Java, Indonesia.

Flows through: Indonesia.

River data from Wikidata (CC0); lengths normalised to a common unit.