Senneville Road, opens onto a vast expanse of water, a widening of the Lake of Two Mountains, called l'Anse à l'Orme (English: Elm Cove).

The park extends along the cove for about 1 kilometre (0.62 mi), on both sides of the mouth of the Rivière à l'Orme (English: Elm River).

From the Lake of Two Mountains, the park area extends inland for an approximately 4 kilometres (2.5 mi) long corridor along the line the banks of the Rivière à l'Orme.

[7] The park's area was further enlarged when, in 2011, an additional 31 hectares (77 acres) of land belonging to Investissement Québec in the Rivière à l'Orme ecoterritory in the neighbouring municipality of Sainte-Anne-de-Bellevue was annexed to it.

This expansion ensured the conservation of the pockets of forests and wetlands, in addition to adding to the numerous trails used for walking and biking and recreational areas.