Forestry is the main economic activity in this valley; recreational tourism, second.

[1] The surface of this Middle North Shore river is usually frozen from the beginning of November to the end of April, except the rapids; however, safe circulation on the ice is generally from late November to early April.

[2] The acronym "rivière Ma Tante" was attributed to this watercourse in association with the acronym "rivière Mon Oncle" (watercourse located further east) evoking Raymond Côté's uncle, a worker forest.

The toponym "Ma Tante River" appears on a 1933 map of the Ontario Paper Company.

[3] The toponym "Ma Tante river" was formalized on August 2, 1974, at the Place Names Bank of the Commission de toponymie du Québec.