When discussing the top 10 deepest lakes globally, we are looking at bodies of water that have an extraordinary depth, often indicating significant geological activity or ancient origins. Here is a list of the world's deepest lakes based on information up to 2025:
Lake Baikal - Located in Russia, Lake Baikal is not only the deepest freshwater lake in the world but also the largest by volume. Its maximum depth reaches 1,637 meters (5,371 feet), and it contains about 20% of the world’s unfrozen surface fresh water .
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Lake Tanganyika - This African lake, shared by Burundi, Tanzania, the Democratic Republic of Congo, and Zambia, is the second-deepest lake with a maximum depth of 1,470 meters (4,823 feet). It is also the longest freshwater lake in the world .
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Caspian Sea - Despite its name, the Caspian Sea is actually a landlocked body of water and the third-deepest lake globally. With a maximum depth of 1,025 meters (3,363 feet), it is also the largest enclosed inland body of water on Earth .
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Lake Vostok - An Antarctic subglacial lake located beneath Russia's Vostok Station, Lake Vostok is covered by over 4 kilometers (2.5 miles) of ice. It has an estimated maximum depth of around 900 meters (2,953 feet) .
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O'Higgins/San Martín Lake - This lake spans across the border between Chile and Argentina and is known for its distinctive blue-green color. It has a maximum depth of 836 meters (2,742 feet) .
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Lake Malawi (or Lake Nyasa) - Situated between Malawi, Mozambique, and Tanzania, this rift lake is the sixth deepest in the world with a maximum depth of 706 meters (2,316 feet) .
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Lake Issyk-Kul - Found in Kyrgyzstan, this saline lake does not freeze even during the harsh winters due to its depth and geothermal activity. Its deepest point is 702 meters (2,303 feet) .
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Great Slave Lake - Located in Canada’s Northwest Territories, Great Slave Lake is North America’s deepest lake with a maximum depth of 614 meters (2,014 feet) .
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Crater Lake - Formed in the caldera of Mount Mazama in Oregon, USA, Crater Lake is renowned for its clear blue waters. It is the ninth deepest lake with a maximum depth of 589 meters (1,932 feet) .
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Lake Matano - In Indonesia, Lake Matano is the country’s deepest lake and one of the ten deepest in the world, reaching depths of 590 meters (1,936 feet). It is known for its unique species of fish .
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