This body of water is located in zec des Martres, outside (on the east side) of Laurentides Wildlife Reserve.

A forest road serves the hydrographic slope of Grand lac des Enfers.

The mouth of Barley Lake is located at the bottom of a bay on the west shore of the lake, at: From the mouth of Barley Lake, the current descends the Barley River on 10.0 kilometres (6.2 mi) generally west, then follows the course of the Malbaie River on 108 kilometres (67 mi) with a drop of 656 metres (2,152 ft) which pours into La Malbaie in the St. Lawrence River.

Approved in 1963 by the Commission de géographie du Québec, this toponymic designation evokes the memory of Pierre Berly, Amerindian of Abenaki origin who camped in the region; he operated, at the outlet of the lake, a trout pit known as Trou à Berly.

[2] The toponym "Grand lac des Enfers" was formalized on February 25, 1976 at the Bank of Place Names of the Commission de toponymie du Québec.