[1] The mouth of the river is in the unorganized territory of Petit-Mécatina in the Le Golfe-du-Saint-Laurent Regional County Municipality.

[2] The small village of Kegashka and the harbor of Kegaska are 5 kilometres (3.1 mi) further east at the other end of Kagaska Bay.

It was needed to carry machinery for construction of an almost 30 kilometres (19 mi) section of Quebec Route 138 between Kegaska and the Natashquan River.

[1] Another source says "kegaska" comes from the Innu word "quegasca" which means "a shortcut or easy passage at high tide between the mainland and the islands".

[2] According to the Dictionnaire des rivières et lacs de la province de Québec (1914), Located on the north coast of the Saint Lawrence, 21 miles east of the large river Natashquan and 498 miles east of Quebec City, in the canton of Kégaska.

[8] A map of the ecological regions of Quebec shows the river in sub-regions 6n-T and 6m-T of the east spruce/moss subdomain.

[9] Along the river the vegetation is sparse due to the harsh climate and strong winds, and in some areas the gneiss and granite bedrock is exposed.

[12] In 1831 the Hudson's Bay Company occupied a salmon fishing and trading post at the mouth of the river.

Sport fishing by boat or wading is practiced on the lowest 13 kilometres (8.1 mi) in four pools that are influenced by the tides.