The Rivière Matapédia flows approximately 65 kilometres through the Matapédia Valley in the Gaspésie region of Quebec, originating near Lac Matapédia and finishing at its confluence with the Restigouche River at the village of Matapédia. The river forms a natural boundary between the Bas-Saint-Laurent and Gaspésie regions and is easily accessible along its entire length via Route 132.

The river is primarily characterized by calm water with shallow sections, making it well-suited for beginner and family paddlers. Short sections include minor rapids, but the overall character is relaxed rather than technical. Canoe, kayak, and stand-up paddleboard (SUP) are all commonly used on the river. Typical day trips run 8 km (roughly 2–3 hours) or 20–24 km (6–8 hours), with put-ins and take-outs supported by shuttle services operated by Nature Aventure, based in the village of Matapédia. The paddling season generally runs from mid-May through September.

The river is internationally recognized as one of Quebec's premier Atlantic salmon rivers, with between 3,000 and 5,000 salmon returning annually. Catches exceeding 18 kilograms are not uncommon, and the run begins as early as late May or early June. The river is managed by the Corporation de gestion des rivières Matapédia et Patapédia (CGRMP), which divides the river into four fishing sectors encompassing 104 pools. Paddlers should be aware that salmon fishing activity is significant throughout the season, particularly in spring when canoe use is preferred over wading in some sectors. Access rights and fishing regulations are administered through CGRMP offices in both Causapscal and the village of Matapédia.

The river passes through a valley with notable natural scenery. Snorkelling to observe Atlantic salmon is also offered in the clearer stretches of the river, suggesting good water clarity in at least some sections. Accommodation and outfitter services are available in the region, including the Auberge de la Rivière Matapédia located in the village of Routhierville. Nature Aventure, operating since 1997 out of Adams Park in Matapédia village, provides equipment rental, guided packages, and shuttle services for paddlers of all experience levels.