Deepest rivers

As of 2026-10-12, Riam Kanan River tops the list with 15 m.

1. #1 Riam Kanan River — 15 m

   river in South Kalimantan, Indonesia

   source Wikidata
2. #2 Alalak River — 10 m

   river in South Kalimantan, Indonesia

   source Wikidata
3. #3 Kumai River — 9.00 m

   river in Central Kalimantan, Indonesia

   The Kumai River is a river of Central Kalimantan province, Borneo island, Indonesia. Read more on Wikipedia.

   Wikidata
4. #4 Mentaya River — 6.00 m

   river in Central Kalimantan, Indonesia

   source Wikidata
5. #5 Katingan River — 6.00 m

   river in Central Kalimantan, Indonesia

   Mendawai River or Katingan River is a river of Borneo, it is located in Central Kalimantan, Indonesia. With a total length of 616 km (383 mi). The longhouses of the Pendahara are located along the river in its upper course. The river has its source in the Schwaner Mountain Range. Read more on Wikipedia.

   Wikidata
6. #6 Lamandau River — 6.00 m

   river in Central Kalimantan, Indonesia

   Lamandau River is a river of Kalimantan, southern-central Borneo, Indonesia. Downstream after passing the village of Nanga Bulik it becomes the Kotawaringin River. Read more on Wikipedia.

   Wikidata
7. #7 Kelayan River — 5.00 m

   river in Banjarmasin City, South Kalimantan, Indonesia

   source Wikidata
8. #8 Napu River — 5.00 m

   river in Central Kalimantan, Indonesia

   source Wikidata
9. #9 Swarangan River — 4.00 m

   River in South Kalimantan, Indonesia

   source Wikidata
10. #10 Riamkiwa River — 1.86 m

    river in South Kalimantan, Indonesia

    source Wikidata