Lac Long in the Parc Naturel Régional de Portneuf, near Saint-Alban, offers approximately 12 to 15 kilometres of paddling on a natural lake with a developed beach area and rocky cliffs along its shores. The cliffs reach up to 45 metres in height, giving the lake a distinctive character defined by dramatic rock faces rising from the water's edge.

Access and registration are handled at the park's reception in Saint-Alban, where paddlers can purchase either a daily or seasonal pass. The daily fee for parking is $6.00 per vehicle, with an annual pass available for $25. The road to the lake is a maintained dirt road, though the final 6 kilometres are notably rough and require attention when driving. There is a boat ramp available at one of the parking areas (coordinates approximately 46.8156, -72.1029), and a footbridge near a second parking lot (P2) located a short distance before the lake. Canoe, kayak, and paddleboard rentals are available on site, and personal flotation devices are provided with rentals.

Amenities at the Plage Beaulieu access point include a boat ramp, campsites, picnic shelter, picnic tables, and seasonal bathrooms. The site is wheelchair accessible. Cell phone reception in the area is generally weak.

A separate Lac Long in the Lanaudière region, near Saint-Alphonse-Rodriguez, is operated by Domaine du Lac Long and also offers canoe, kayak, and paddleboard rentals, as well as pontoon boat rentals with a private driver. These are two distinct lakes sharing the same name in different parts of Quebec.

For the Portneuf location, paddlers should be aware that a permit or registration is required for access, and the remote dirt road approach means preparation for limited services in the area is advisable. The nearest hospital from the Portneuf site is the Centre hospitalier de l'Université Laval in Quebec City, approximately 80 kilometres or 1 hour and 10 minutes away.