The Wayagamac lake is located 10 km (direct line) southeast of the city of La Tuque.

With some peaks exceeding 400 meters [1] This Upper-Mauricie lake is segmented into three parts, the most important is the west side.

A heronry and bird colony are based on Steamboat Island, located in the center of Lake Wayagamac.

According to Father G. Lemoine, the term "waweia gamak" akin to the Algonquin language and means "at Round Lake".

Father Joseph-Étienne Guinard consider that "waiagamak", set for "wawiagamaw" has meaning for "Round Lake".

This name, in the form of Wayagamack was mentioned in 1876 in a report of the surveyor Télésphore Chavigny Of Chevrotière.