Lac Brompton is located in the Eastern Townships of Quebec, near Saint-Denis-de-Brompton, approximately 10 km from the village, 12 km from Magog, and 20 km from Sherbrooke. The lake supports motorboats and jet skis, which means paddlers should expect motorized traffic during summer months and plan accordingly for wake and boat noise.

Access to the lake is largely private, with the vast majority of shoreline in private hands. There are two public access points: the Mackenzie Beach campground and the Domaine Lac Brompton (formerly referred to as the Brompton Lake estate), located at 310 côte de l'Artiste, Saint-Denis-de-Brompton. Both public access points charge fees for non-residents. The Domaine Lac Brompton also offers a boat launch ramp (with fees) and rentals of kayaks, paddle boards, pedal boats, and pontoons, making it a practical base for paddlers who do not have private lake access.

The lake supports over twenty fish species, including rainbow, brown, and lake trout, as well as bass, pike, and walleye, which may be of interest to paddlers who also fish. Ice fishing is available in winter from the Brasserie Lac Brompton parking lot, indicating the lake freezes seasonally, which is relevant context for understanding the paddling season's limits.

Summer is the most active period on the lake, with motorized watercraft in use. Paddlers seeking quieter conditions may want to plan trips outside peak summer periods or during early morning hours. The surrounding area includes Mount Orford National Park, which offers hiking trails nearby, providing options for combining a paddling trip with land-based activities.

For those planning a trip, the Domaine Lac Brompton can be reached at 819-846-1442 or info@domainelacbrompton.com. Basic services including grocery, gas, and pharmacy are available in Saint-Denis-de-Brompton, and a broader range of amenities can be found in Magog and Sherbrooke.