The river rises near Neika and flows generally east towards Kingston, where it empties into Halfmoon Bay within the D'Entrecasteaux Channel that also forms part of the Derwent estuary.

The river descends 464 metres (1,522 ft) over its 12-kilometre (7.5 mi) course.

[3] The river was known to the indigenous people of the area as promenalinah.

[2] The river was named after botanist Robert Brown who collected samples in the area in 1804.

This article about a river in Tasmania is a stub.