The Gairdner River is a peaceful waterway in Western Australia's Fitzgerald River National Park region, winding its way to Gordon Inlet, where the Southern Ocean lies just behind a sandbar at Trigelow Beach. In some years the river breaks through to the ocean, turning the Gordon Inlet a vivid turquoise blue. The river is notable for its calm conditions — there is no strong current in either direction — making it accessible to paddlers of varying experience levels.

The primary access point is a boat ramp located 2.7 kilometres from the Quaalup Homestead Wilderness Retreat. Canoe hire is available at this nearby boat access, with one two-person canoe and one four-person canoe available for hire through the Quaalup Homestead (contact: 0898374124). A very basic mud map of the area is available at the homestead's reception.

A return paddle to Gordon Inlet takes approximately three and a half hours. Shorter trips are also possible, with a paddle to the red cliffs along the river being a popular option. One practical approach is for a group to split up, with some paddling downstream to the inlet while others drive there and paddle back upstream, taking advantage of the negligible current in both directions.

The river supports a variety of wildlife, including pelicans, black swans, other waterbirds, sea eagles, and parrots. The surrounding landscape and reflections on the water contribute to the river's visual character, particularly at sunset near Gordon Inlet.

The Quaalup Homestead itself, a heritage-listed property dating to 1858, is situated close to the put-in and is open to guests. The broader area around the river sits within or adjacent to Fitzgerald River National Park, which is known for its wildflowers and diverse fauna. Point Ann, a nearby coastal location, is a known viewing site for Southern Right Whales, adding a potential wildlife dimension for paddlers visiting the region during whale season.