The hydrographic slope of Lac Royer is accessible by a branch of a forest road connecting to the north at route 113 (linking Lebel-sur-Quévillon and Chibougamau) and the Canadian National Railway.

The surface of Le Royer Lake is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

Le Royer Lake has a rather complex shape with several bays, peninsulas and islands.

Le Royer Lake gets its supplies on the east side by the dump of the [Lac La Dauversière].

The toponym "lac Le Royer" was formalized on December 5, 1968, by the Commission de toponymie du Québec, when it was created.