One of Australia’s best and most well-known sections of whitewater. Classic. 
This great section of river flows through a beautiful, steep­ sided valley, featuring pockets of rainforest and towering granite cliffs and gorges with the river itself having a magnificent series of rapids. Although most commonly paddled as a day trip, the section also makes for a great, year-round, two-day trip with several beautiful riverside campsites along the way. The most used campsites are just upstream of The Chute, about 200m below Rumbles rapid (Kellys Camp) and around the corner after The Gorge (Death Adder campsite). The rapids are mostly grade III in standard with sporadic grade IV rapids that can be easily scouted and portaged by experienced whitewater paddlers. Particular care should be taken around  First Pinnacle and the very bouldery Liftover and Mushroom rapids. 
Popularity:★★★★★
Quality:★★★★★
Reliability:★★★★★
Grade:III+ with optional grade IV+
Length16km
Elevation and average gradient350m at put-in, 240m at take-out, 7m/km average
Paddling time:Typically 5-7 hours
Gauge and level:Nymboida@Nymboida electronic gauge. Typically paddled as low as 0.6m (very bouldery and 'creeky’) but 0.9-1.6m are optimal flows. The section can be intimidating over 2m.
Put-in:Cod Hole Campground which can be accessed via Dorrigo and Cascade (approximately 40km north of Dorrigo) or via Coramba and Cascade (approximately 55km west of Coramba). 
Take-out:The Junction Campground via roads described below. If driving directly to The Junction, it is also possible to travel from Nymboida township (via Layton’s Range Road and Black Mountain Road) or from Glenreagh (via Tallawudjah Creek Road and Twelve Sixty Road).
Shuttle:Medium difficulty 4WD. 2 hours each way via the series of roads that go through Cascade to Lowanna to Black Mountain Road and The Junction Road. Given the length, it is best to use a shuttle driver. The last portion of the drive down to The Junction is quite steep. 
Maps:Map 6 Nymboida River- Cod Hole to The Junction
Dundurrabin 1:25,000 
Clouds Creek 1:25,000 
Glenreagh 1:25,000