Lac à la Carpe is located a few kilometers from the northern limit of the Laurentides Wildlife Reserve.

The surface of Carp Lake is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally done from mid-December to mid-March.

The main watersheds neighboring Lac à la Carpe are: The "Lac à la Carpe" has a length of 8.3 kilometres (5.2 mi), a width of 2.0 kilometres (1.2 mi) and an altitude of 359 metres (1,178 ft).

This lake includes a peninsula advancing towards the northwest, creating a bay at the mouth of the outlet of "Lac au Canard".

The mouth of this lake is located to the northwest, at the bottom of a small bay, at: From the mouth of "Lac à la Carpe", the current flows in the following segments: The toponym "lac à la Carpe" was formalized on December 5, 1968, by the Commission de toponymie du Québec.