The Río Maule is one of Chile's major rivers, originating at Laguna del Maule in Talca Province at an altitude of approximately 2,200 meters near the Argentine border. The river runs roughly 240 kilometers westward through the Maule Region, draining a basin of around 20,600 km², with about 30 percent of that basin lying within the Andean range. Before reaching the central valley, the river is impounded by the Colbún dam, which feeds a hydroelectric power station of the same name. Key tributaries include the Melado River on the left bank and the Colorado, Claro, Puelche, and Cipreses rivers on the right bank.

For paddlers, the Maule offers approximately 21 kilometers of whitewater ranging from Class 3 to Class 5, with a notably big-water character. The river is described as featuring warm water, which distinguishes it from many of Chile's colder Andean runs. Navigation to the put-in can be complex, so thorough route planning before arrival is advisable.

The Maule Region carries considerable historical and cultural weight. The river marked the southern boundary of the Inca Empire and has been a reference point through Chile's colonial period, wars of independence, and modern history. The surrounding region is also significant for Chilean viticulture, forming part of the Valle del Maule appellation within the broader Central Valley wine region.