This is the deepest lake in the world

Caspian Sea  border between Europe and Asia, depth 1025 meter

Great Slave Lake, Canada, depth 614 meter

Great Slave Lake is a lake basin in northwestern Canada, located in the Northwest Territories.

Lake Crater  United States, depth 594 meters 

Lake Crater is a volcanic lake located in south-central Oregon in the northwestern United State

Lake Issyk-Kul Kirghizistan, depth 668 meters 

Lake Malawi  Malawi - Mozambique Tanzania, depth 700 meters 

Lake O'Higgins San Martín, Argentina  Cila, depth 836 meters 

Lake Tanganyika, depth 1470 meters 

Lake Vostok East Antarctica, depth about 900/1000 meters