The lake occupies the space of a former open-pit mine that required the relocation of the historic city of Most in the 1960s and 70s.
The water used for flooding the mine was diverted from the Ohře River via a complex system of pipelines and canals.
The lake's water surface is located at an altitude of 230 meters above sea level.
Lake Most features a dedicated bird sanctuary zone where human access is restricted to protect nesting grounds.
The project is a flagship example of post-mining landscape reclamation in the Czech Republic.
Underwater topography remains varied due to the original mining terrace structure, which is now completely submerged.
Mostecké jezero, also known as Lake Most, is a large artificial lake created by the flooding of the former Ležáky brown coal mine. Situated near the city of Most in the Ústí nad Labem Region, it covers an area of approximately 311 hectares. The lake reaches a maximum depth of 75 meters and has a water capacity of 70 million cubic meters. Its restoration project, which commenced after mining operations ceased in 1999, was officially completed when the lake reached its final water level in 2012. The water quality is maintained at a level suitable for swimming and water sports due to the natural filtration process and careful environmental management. The shoreline features a 200-meter-long sandy beach, paved pathways for cycling and in-line skating, and designated areas for water activities. Its ecosystem is currently undergoing natural succession, attracting various bird species and aquatic flora.
The elevated viewing points along the southern perimeter trail overlooking the entire basin.
Bring specialized footwear for the beach area, as certain sections of the shoreline transition from sand to gravel.
Use the paved perimeter circuit, which is well-maintained and ideal for recreational biking or skating.
Pack sun protection as the lake surroundings are largely exposed with minimal natural shade.
Check the water quality notice boards at the main entrance, which are updated regularly during the swimming season.
Do not attempt to swim outside of the designated beach zones for safety reasons.
The beach area is officially supervised during the summer season; winter ice skating on the lake is prohibited for safety reasons.
Respect the marked 'no entry' zones to preserve the protected bird habitats; follow leash laws for dogs.
