| Rivière aux Araignées | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Name3: | Estrie |
| Subdivision Type4: | MRC |
| Subdivision Name4: | Le Granit Regional County Municipality |
| Source1: | Mountain streams on the border of Quebec and Maine (United States) |
| Source1 Location: | Saint-Augustin-de-Woburn, (MRC) Le Granit Regional County Municipality, Québec |
| Mouth: | Lake Mégantic, Chaudière River |
| Mouth Location: | Frontenac |
| Progression: | Lake Mégantic, Chaudière River, St. Lawrence River |
| River System: | St. Lawrence River |
| Basin Size: | 437.9km (272.1miles) |
| Tributaries Left: | (upstream) Arnold River, ruisseau Campagna |
| Tributaries Right: | (upstream) rivière des Indiens (lac aux Araignées), ruisseau Meads, Branche Est, ruisseau des Cascades |
The rivière aux Araignées (in English: Spider River) is a tributary on the south shore of Lake Mégantic whose outfall is the Chaudière River which flows northward to flow into the south shore of the St. Lawrence River.
The Araignées River flows in the municipalities of Saint-Augustin-de-Woburn and Frontenac, in the Le Granit Regional County Municipality (MRC), in the administrative region of Estrie, in Quebec in Canada.
The "rivière aux Araignées" originates near the summit of Mont Pisgah on the Canada–United States border, or north of the Canadian-American border. The river is joined by several streams that drain the western flank of Mont Merrill, Caribou Mountain and several border mountains between Quebec and Maine (United States) which surround a valley which constitutes its watershed, drained by several branches of the Chutes brook, the Caribou brook and the Cascades brook. It flows between Mont Louise and Mont Flat Top before flowing onto the south-eastern shore of Lac aux Araignées.
Upper course of the river (segment of)
From its source, the "rivière aux Araignées" flows over:
Lower course of the river (segment of)
From lac aux Araignées, the river takes the name of discharge of lac aux Araignées and flows to:
The rivière aux Araignées watershed, which is 437.9km (272.1miles) and that of the Arnold River with 265km (165miles) meet in the landfill lac des Joncs,[2] before reaching lake Mégantic.
The toponym "rivière aux Araignées" was made official on December 5, 1968, at the Commission de toponymie du Québec.[3]