This river has tourist attractions, in particular sport fishing for salmon, its striking landscapes in particular its canyon comprising a cliff reaching in places up to 100 m (330 ft) in height, the presence of thousands of deer and seals along the shores.

[2] The Jupiter River draws its source from Lake Létourneau (length: 2.4 km (1.5 mi); altitude: 189 m (620 ft)), located in the center of the island.

The Société des establishments de plein air du Québec (Sépaq), which is its mandated manager, has enhanced this valley by equipping it with chalets and services to receive many tourists and fishermen.

The main camps set up along this Jupiter river for recreational tourism activities are designated Jupiter-Trente, Jupiter-Vingt-Quatre, Jupiter-Douze and Jupiter-la-Mer, according to their distance (in miles) from the shore of the Gulf of Saint-Laurent.

According to the Commission de toponymie du Québec, the toponymic designation of this inlet would be linked to the fact that a ship named Jupiter would have passed there, or else would have been wrecked there.

[1] The toponym "Rivière Jupiter" was made official on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.