Best lakes around Brennilis are primarily centered around the significant Lac Saint-Michel, an expansive artificial reservoir located within the Monts d'Arrée and the Armorica Regional Natural Park. This region is characterized by its unique landscape of marshes and peat bogs, offering a blend of historical significance and natural beauty. The area provides opportunities for outdoor activities such as hiking and fishing, making it a notable destination for exploring diverse aquatic environments.
Last updated: June 24, 2026
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Very beautiful lake with a beautiful beach and nautical base.
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The big minus of this trail is the passage via the heavily used departmental road.
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Beautiful view of Lac de Huelgoat.
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Plage de Sizum - here is the best beach on the lake.
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According to legend, you can meet fairies here ;-)
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It is said that fairies can be found here
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The primary and most significant lake in the Brennilis area is Lac Saint-Michel, also known as the Saint-Michel Reservoir. This expansive artificial lake is a central feature of the region, offering a blend of historical significance, natural beauty, and recreational opportunities.
Lac Saint-Michel was created between 1929 and 1937 by constructing a dam on the Elez river. Its initial purpose was to support the hydroelectric plant in Saint-Herbot. Later, from the 1960s to 1985, its waters were also used for cooling the Brennilis nuclear power plant. The lake was formed by flooding former marshes and peat bogs in the Yeun Elez basin.
Lac Saint-Michel is an integral part of the Armorica Regional Natural Park. Its northern section, characterized by marshes and peat bogs, is designated as the Vénec National Nature Reserve. The lake itself is known for its captivating atmosphere, especially when mist rises over its surface, and offers views from elevated points like Tuchenn Kador.
Yes, there are several hiking opportunities. Around Lac Saint-Michel, a popular 15 km circuit known as the 'Yeun Elez' trail encircles the lake, offering scenic views. For more options, you can explore various hiking routes in the region, including the 'Yeun Elez – Brennilis Lake Peatlands loop' or routes near Huelgoat Lake. Find more details on the Hiking around Brennilis guide.
Yes, Lac Saint-Michel is a popular spot for fishing. It is home to species such as rainbow trout, pike, and perch. It's classified as a 1st category fishing site, and specific regulations, including permits and catch logs, apply. Fishing is permitted from the shore or by boat, though thermal motors are prohibited.
Several lakes offer family-friendly environments. Drennec Dam and Lac du Drennec are noted as family-friendly, with the latter featuring a beach and nautical base. The Fairies' Pond is also considered family-friendly due to its natural monument status and local legends. Lac Saint-Michel also provides areas for picnicking and a children's playground.
The region offers various cycling routes. Huelgoat Lake is a magnificent place for cycling and mountain biking. You can find routes like the 'Huelgoat Lake – Huelgoat Forest loop' from Brennilis. For more cycling adventures, check out the Cycling around Brennilis guide or the Gravel biking around Brennilis guide.
Swimming is possible in Lac Saint-Michel, though it's worth noting that the weather in the region can be quite cool. Lac du Drennec also features a beach, making it another option for water activities.
The Fairies' Pond is a natural monument within the mysterious Huelgoat forest. It's known for its orange-colored water, which is due to a high iron content, and is associated with local legends of fairies combing their golden hair there. It's an emblematic and magical place to visit.
Drennec Dam is a vital man-made lake covering 110 hectares, fed by the Élorn and Mougaud rivers. It serves as a crucial water supply for approximately 400,000 people, including the inhabitants of Brest Métropole, Landerneau, and Landivisiau.
Visitors appreciate the blend of natural beauty and historical significance. The captivating atmosphere of Lac Saint-Michel, especially when shrouded in mist, is often highlighted. The opportunities for hiking, cycling, and fishing, along with family-friendly spots like Lac du Drennec with its beach, are also highly valued. The unique natural environment, including marshes and peat bogs, and the legends surrounding places like The Fairies' Pond, add to the appeal.


Still not found your perfect lake around Brennilis? Check out the guides of these regions to see even more beautiful places.