Lake Annecy, FranceLocated in the Haute-Savoie department, which borders Italy and Switzerland, Lake Annecy is a pristine body of water that's often called the cleanest lake in Europe, thanks to strict environmental regulations set in place in the 1960s.
Annecy. Regarded as the clearest lake in Europe, Annecy is home to a picturesque town of the same name – sometimes also known as Venice of the Alps due to its numerous water canals.
Lake Baikal is so deep because it is located in an active continental rift zone. The rift zone is widening at a rate of about 1 inch (2.5 centimeters) per year. As the rift grows wider, it also grows deeper through subsidence. So, Lake Baikal could grow wider and deeper in the future.
Not only is Lake Baikal safe to swim in, but it also boasts some of the purest water in the world. The only drawback is the temperature - even during the warmer months, a dip in the lake is pretty invigorating.
Unique WildlifeAmong these interesting creatures are the Baikal omul fish, Baikal oil fish and most notably, the Baikal seal or nerpa as they are called in Russian. This is one of the only seal species to live entirely in fresh water.
Lake Baikal is not only the largest, deepest, and oldest lake in the world, but houses around 2,000 unique known species of animal that are not found anywhere else on Earth.
Dimensions of Lake Baikal: It is 636 km long, 79 km wide. There are 27 islands in Lake Baikal, most of them being uninhabited. Baikal Lake's coastline measures 2100 kilometers (around 1300 miles). More than 300 streams and rivers flow into Lake Baikal, but there is just one outlet, the Angara.
Because most of the world's water is found in areas of highly effective rainfall, most lakes are open lakes whose water eventually reaches the sea. For instance, the Great Lakes' water flows into the St. Lawrence River and eventually the Atlantic Ocean.
Underwater HazardsUnlike controlled swimming pools, lakes often harbor hidden hazards beneath the surface. Submerged rocks, fallen trees, sharp branches, glass products, and other trash, or uneven terrain can cause injuries if swimmers are not cautious or are unaware of their presence.
Lago di Molveno in Italy is not only one of the best lakes for swimming, it is also the cleanest lake of all. The water in this crystal clear lake comes directly from the Presena gletsjer and is wonderfully refreshing. It is not a coincidence that the Molveno lake is also called 'pearl of the Dolomites'.