Located in the central-western part of the Adirondack region, Big Moose Lake covers 1,242 acres (5.03 km2) in surface area.[3] It is approximately three miles (4.8 km) long and almost one mile (1.6 km) wide, running in an east–west direction along its major axis.[4] The lake ranges in depth from 30 to 70 feet (9 to 21 m) in its deepest parts, with an average depth of 23 feet (7 m).[3]