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About this place
Lac de Bret is a small lake in the municipality of Puidoux, canton of Vaud, Switzerland, set in the hills above Lake Geneva beside the Lavaux vineyard region. It is a quiet spot for an easy lakeside walk, and it doubles as a drinking-water reservoir for nearby Lausanne.
Where is Lac de Bret?
The lake lies at roughly 674 m above sea level, north of Lake Geneva, in a hollow between the Tour de Gourze and Mont-Pèlerin. A steep slope separates it from the lakeshore towns, so the air is cooler than down by the water and the setting feels more like forested upland than a resort.
What is its history?
Lac de Bret is a natural lake that has served as a reservoir since the 19th century. The first dam went up in 1875 to supply water to the Lausanne–Ouchy funicular. Today the lake feeds drinking water to Lausanne and the Lavaux area, several million cubic metres a year. That role shapes how the shore is used: it is a protected water source, not a bathing beach.
What can you do there?
The main activity is the walk around the lake. The easy loop runs about 4.3 km with only around 30 m of climbing, and takes about an hour. It starts right next to a car park. You will pass views of still water ringed by woodland and meadows, with waterbirds along the margins. Vaud authorities plan to give protected status to the northern shore for its natural value, so stay on marked paths.
Cyclists can start from Puidoux (a popular road loop is around 36 km with about 470 m of climbing), but riding is not allowed on the path around the lake itself; you push your bike.
How do you get there?
Driving or cycling from Puidoux is simplest, and there is parking at the start of the loop. From Lausanne you can reach Puidoux by regional rail and train, then continue on foot or by local transport. Check timetables in advance, as services in this area are not frequent.
When should you visit?
Spring and early autumn are best, with dry paths and strong woodland colour. In summer, go in the morning for cooler, quieter conditions. Winter can be damp and slippery, so wear sturdy shoes. The walk pairs well with a trip through the UNESCO-listed Lavaux vineyards or a ride up Mont-Pèlerin.
Frequently asked questions
Can you swim in Lac de Bret?
The lake is a drinking-water reservoir and a protected natural area, so do not treat it as a beach. Check the rules with the Puidoux municipality before you go.
How long does the lake walk take?
About an hour. The loop is roughly 4.3 km and has no major climbs.
Can I bring a bike?
You can ride to the area, but cycling is not permitted on the lakeside path. You have to walk your bike.
Why was the dam built?
The first dam was built in 1875 to supply water for the Lausanne–Ouchy funicular. The lake still provides Lausanne with drinking water.
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