The Brisbane River is not the same depth everywhere: it ranges from only a few metres deep in some upstream sections to around 30 metres at its deepest point near Indooroopilly.

Quick Scoop: How deep is the Brisbane River?

  • Near the river mouth (towards Moreton Bay), typical depths are around 13 metres.
  • Around the Bremer River junction (near Ipswich), it can be as shallow as about 4 metres.
  • A University of Queensland study cited in a public Q&A notes the deepest known section is an underwater gorge near the Indooroopilly railway bridge, where the river reaches roughly 30 metres.
  • Some educational sources simplify this and say the river is “at most about 15 metres deep” in many navigable stretches, reflecting common depths rather than the extreme maximum.

So if you picture it as a whole: most of the Brisbane River through the city is on the order of 10–15 metres deep, but there is at least one notably deeper hole near Indooroopilly that goes down to around 30 metres.

Information gathered from public forums or data available on the internet and portrayed here.