The Lac Fontaine is a lake located in the municipality of Grandes-Piles, in the Mékinac Regional County Municipality, in Mauricie, in Quebec, in Canada. The "Lake Fontaine" is located in forest and mountain areas. The north end of the lake is 0.3 km south-west of the boundary of Sainte-Thècle. The southern end is located 0.4 km from the mouth of the "La…The Lac Fontaine is a lake located in the municipality of Grandes-Piles, in the Mékinac Regional County Municipality, in Mauricie, in Quebec, in Canada. The "Lake Fontaine" is located in forest and mountain areas. The north end of the lake is 0.3 km south-west of the boundary of Sainte-Thècle. The southern end is located 0.4 km from the mouth of the "Lac du Renard", located in the southeast, which is a tributary of Lake Fontaine. At about 500 m north of "Lac du renard", there are three lakes "Toupies", whose waters flow into each other to the west to reach the Lake Fontaine.