The Wayagamac lake is located 10 km (direct line) southeast of the city of
La Tuque. This lake is surrounded by mountains
Laurentides. With some peaks exceeding 400 meters This Upper-Mauricie lake is segmented into three parts, the most important is the west side. It measures 9.2 km in length (east-west) and 5.9 km wide (north-south). The two main tributaries of the lake are the dumps of "Petit lac Wayagamac" (Small lake Wayagamac) (located 4.4 km to the East by the water) and Tom Lake (located 1.2 km south by water).
Little Bostonians River From the outlet of Little Wayagamac Lake, the
Little Bostonnais River course 4.4 km (measured on water) before flowing into the lake Wayagamac (southeast side). Wayagamac lake discharges from the west in the
Little Bostonnais River which has an approximate length of 10.6 km (measured by water) between the dam and the Wayagamac lake. The mouth of the river flows into the
Saint-Maurice River at the southern boundary of the city of
La Tuque (just south of the airport). From the discharge of Little Wayagamac lake, the
Little Bostonnais River water runs westbound on 23.6 km of which 8.6 km through the Wayagamac lake.
Heron colony Like other zec of
Québec, the
zec de la Bessonne is not a protected area recognized by the
Government of Quebec. By exception, logging and mining are permitted. A
heronry and
bird colony are based on Steamboat Island, located in the center of Lake Wayagamac. The lake also serves as a water intake for the
La Tuque municipal water system.
Wayagamac Dam Built in 1953, this high-capacity dam has a length of 55 m and 6 m high. It has a holding capacity of 145 million cubic meters of water. The structure is composed of casing filled with stones. The dam has borrowed its name from the lake Wayagamac. The name "Dam Wayagamac" was officially registered on May 11, 1987, at the Bank of place names in
Geographical Names Board of Canada. Coordinates of the dam: Longitude West (72° 41' 50"); North Latitude: (47° 23' 02"). == Toponymy ==