This body of water straddles the municipalities of: The demarcation line of the two administrative regions of Quebec passes in the middle of southeastern part of Lake Turgeon.

This hydrographic slope is served on the west side by the Conquerors road (North-South direction) and a forest road "Chemin de la presqu’île" (East-West direction) serving a peninsula of the South shore.

The resort has developed on the southern shore of the bay between the mouth of the Lavergne River and the peninsula advancing to the North.

Annually, the lake surface is generally frozen from mid-November to late April, however, the period of safe ice circulation is usually from mid-December to mid-April.

The toponym "Lac Turgeon" was made official on December 5, 1968 by the Commission de toponymie du Québec, when it was created.