The Mackintosh River is impounded by the Mackintosh Dam, the site of the adjacent hydroelectric power station that forms part of the Hydro Tasmania-operated Pieman River Power Development.

The northern side of Sophia river catchment, a creek known as White Hawk, drains ground with features known as Granite Tor, and High Tor, which lie due east of Tullah.

From the orientation of Mount Romulus, Fury River which originates near Barn Bluff, is the main eastern tributary.

Mount Remus is drained to the south by Schist Creek which flows into the Fury River, and to the west, Devils Ravine.

In the north east of the catchment area, Mayday Mountain is drained by Belvoir River.