The Des Aulnes River (English: Alders River) is a tributary of the west bank of the Laflamme river, flowing in the municipality of Barraute, in the regional county municipality (MRC) of Abitibi, in the administrative region of Abitibi-Témiscamingue, Quebec, Canada.

The "Des Aulnes River" flows in forest and agricultural areas.

Forestry is the main economic activity of this hydrographic slope; agriculture, second.

The hydrographic slopes adjacent to the "Des Aulnes River" are: The "Des Aulnes River" has its source of streams draining a marsh area (altitude: 337 metres (1,106 ft)), located in Barraute Township.

This wetland constitutes the plateau of several hydrographic slopes, including that of Fischer Creek (tributary of the Laflamme River on the north side) and of Barraute Creek (tributary of the Laflamme River on the south side).