The surface of Lac Blanc is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally made from mid-December to mid-March.

[2] Lac Blanc is located southwest of the boundary of the Portneuf Regional Natural Park.

Comprising 70 kilometres (43.50 mi), this park includes the Long lakes, Montauban, Carillon, Sept Îles, Lac en Coeur, "À l'Anguille" and some other more secondary bodies of water.

This park is popular for recreational and tourist activities: hiking trails, cross-country skiing, boat launching ramp... A 5.1 kilometres (3.2 mi) bike path connects the Lac Blanc and Carillon Lake, bypassing the Emerald Lake Mountain.

From there, the current flows on: The toponym "Lac Blanc" (Saint-Ubalde) was registered on December 5, 1968, in the Place Names Bank of the Commission de toponymie du Québec.