The reservoir extents also over mainly in the townships of Brunet, but also Rochon and Turgeon for the southern part.

[1] This reservoir (altitude: 260 metres (850 ft)) covers 4,248 hectares (10,500 acres) and the area of the watershed is 701.9 kilometres (436.14 mi).

The Kiamika River supplies the reservoir from the northeast through the northern bay of the lake, through which the current flows over 4.1 kilometres (2.5 mi) west, then south.

In 1952, the MacLaren Company undertook construction work which was related to the objective of controlling the floods of the Lièvre and the Ottawa for hydroelectric power generation.

The two main islands in the reservoir are "Île de la Perdrix Blanche" (11.7 kilometres (7.27 mi) and its summit 457 metres (1,499 ft)) and the "Petite île de la Perdrix" (5.4 kilometres (3.36 mi) and its peak reached 364 metres (1,194 ft)).