The reservoir's dam features a massive triple-walled structure designed to prevent leaks and ensure water pressure for the canal system.
The lake collects water from the Laudot river and several mountain streams from the Montagne Noire.
During its construction, the dam was considered a masterpiece of 17th-century hydraulics, utilizing a stone-lined interior core.
The lake remains an active and essential component of the Canal du Midi's water management system today.
In 1996, the lake and its associated canal works were inscribed on the UNESCO World Heritage list.
Lac de Saint-Ferréol is a man-made reservoir created in the 17th century by Pierre-Paul Riquet to supply water to the Canal du Midi. It serves as the primary water source for the canal, feeding into it via the Rigole de la Montagne. The site is a UNESCO World Heritage area, recognized for its historic engineering significance. The lake covers 67 hectares and features a dam that was the largest earth-fill embankment of its time. Visitors access the lake via the commune of Revel at the foot of the Montagne Noire. It functions as a multipurpose leisure site, offering swimming beaches, hiking trails, and sailing opportunities. The surrounding parkland contains mature trees and areas designated for picnicking. The site includes a museum dedicated to the history of the Canal du Midi and the lake's construction.
From the top of the stone dam embankment looking back across the water toward the Montagne Noire.
Bring water shoes, as the lake bed near the main beach area can be rocky.
Follow the peripheral path around the lake for a complete 6-kilometer walk that offers varying perspectives of the reservoir.
Parking near the lakefront fills up quickly on summer weekends; arrive early or utilize designated overflow lots.
Attempting to swim outside of the patrolled beach zones where underwater vegetation and sudden depths can be hazardous.
Lifeguard supervision on designated beaches is provided only during the summer months.
Respect designated swimming zones marked by buoys and keep pets leashed in the park areas.
