This body of water is located in zec des Martres, outside Laurentides Wildlife Reserve.

Located in a forest area in the unorganized territory of Lac-Pikauba in the zec des Martres, Lesclache Lake (length: 2.1 kilometres (1.3 mi); altitude: 817 metres (2,680 ft)) is crossed to the southwest by the current of the Barley River.

[1] This toponymic designation appears on the draft of the Lac des Martres map, 1961-09-25, item 69.

This toponym evokes the memory of Father Jacques de Lesclaches, born in France in 1670, who was ordained a priest in Quebec, October 7, 1714.

[2] The toponym "Lac Lesclache" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec.