The Deep River flows through the Walpole Wilderness Area in Western Australia and offers a multi-day canoe journey that can be understood in three distinct sections. The uppermost reach, above Fernhook Falls, begins at the Weld Road crossing. This section covers roughly 13 kilometres as the crow flies but closer to 30 kilometres on the water, taking approximately three days to navigate through a granite-strewn valley. The river here is narrow and active, tumbling down cascades and rockslides between banks overhung by jarrah, marri and karri. As it approaches Fernhook Falls, the river widens and steadies noticeably.

Below Fernhook Falls, the river enters its middle character, with rapids continuing downstream. The last rapid on this stretch is located a few hundred metres upstream of the Centre Road crossing, near which the Easter Road crossing also serves as a notable waypoint. A shute upstream of the Easter Road crossing is one feature paddlers navigate through this section.

Below the Centre Road crossing, the river transitions into its lower reach, meandering across sandy coastal lowlands. Here it makes sharp turns against eroded banks, scouring around exposed tree roots. In low water conditions, logs settled on the riverbed can disrupt paddling lines considerably. Some low logs can be skidded over with sufficient speed, but paddlers should expect frequent portaging or wading in these conditions.

Late spring has been noted as a viable paddling season. The river flows toward the southern coast of Western Australia, and its overall length and character make it suited to multi-day canoe expeditions rather than short day trips, particularly for the upper and middle sections.