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Lake Upper Sûre
The Upper Sûre Lake (Lac de la Haute-Sûre) is the largest body of water in Luxembourg and the central element of the namesake nature park in the Oesling region. It was created in the 1950s by the construction of a 47-meter-high dam, primarily to supply the country with drinking water and for hydroelectric power generation. The lake's branched shape resembles a fjord and is surrounded by steep, forested slate slopes. Ecologically, the lake is of enormous importance, supplying about 70% of Luxembourgish households with drinking water and providing critical habitats for waterfowl and fish species such as pike and zander. Tourist-wise, the area is a magnet for hikers, sailors, and divers, with strict environmental regulations in place to guarantee water quality protection. Surrounding villages like Esch-sur-Sûre preserve their medieval flair and are deeply connected to the history of the valley.
- Location: Luxembourg
- Top sights: Lake Sure Viewpoint · Naturparkausstellung · Tuchfabrik
- Nearby: Wiltz (7 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 0 | 1 | 4 | 8 | 12 | 16 | 18 | 17 | 14 | 9 | 5 | 1 |
| Rain mm | 75 | 64 | 63 | 49 | 75 | 75 | 74 | 81 | 59 | 67 | 72 | 84 |
📋 Practical info
Geography
Facts
- The dam at Esch-sur-Sûre was constructed between 1955 and 1958.
- The lake has a maximum water depth of approximately 43 meters.
- The water surface covers about 3.8 square kilometers.
- The reservoir holds around 60 million cubic meters of water at full capacity.
- Approximately 70% of the Luxembourgish population gets its drinking water from here.
- Motorboats with internal combustion engines are strictly prohibited on the lake.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Lake Upper Sûre (10)
Naturparkausstellung🏛 museum
Museum in the Upper Sûre Nature Park, informing about regional nature and culture.
Tuchfabrik🏛 museum
Museum in a former cloth factory, showcasing the history of the textile industry.
Lultzhausen
Beach at the Upper Sûre Lake, with sunbathing lawn and water access.
Château d'Esch-sur-Sûre🏰 castle
Castle in Luxembourg, a castle ruin on a rock above the Sûre river.
Nativité de la Bienheureuse-Vierge-Marie
Church building in Luxembourg, dedicated to the Nativity of the Blessed Virgin Mary.
Insenborn
Beach at the Upper Sûre Lake, with sandy area and shallow water.
Bléck op Esch-Sauer
Viewpoint overlooking the village of Esch-sur-Sûre and the castle.
Saint-Roch
Church building in Luxembourg, dedicated to Saint Roch.
Sights nearby
Frequently asked questions
Is swimming allowed in the reservoir?
Is there boat rental?
Is BBQ allowed?
Is the water drinkable?
Are there circular hiking trails?
Lake Upper Sûre: where is it located?
Lake Upper Sûre: what is there to see?
Lake Upper Sûre: when is the best time to visit?
Lake Upper Sûre: why is it worth visiting?
Nearby cities
History & landmarks
Nature
More places
