Information on Flathead Lake boat rentals, jet ski, water sports, and private boat tours on this large natural freshwater lake in the western part of the United States in Montana. With a surface area of 195 sq. miles it is slightly larger than Lake Tahoe. The lake is a remnant of the ancient inland sea, Lake Missoula. Flathead Lake is 27 miles long and up to 16 miles wide creating an amazing destination for the outdoor adventurer.
Its known maximum depth is 371 feet making it deeper than the average depths of the Yellow Sea or the Persian Gulf and the Dam is called Kerr Dam which raised the lake 10 feet from it's original depth. There are several marinas and resorts around the lake and we service them all; Wayfarers Marina, West Shore Resort and Marina, Wild Horse Island, Big Arm Marina, Finley Point Marina, and Yellow Bay Marina. You can enjoy the newest waverunners, wakeboard boats, zapata flyboard, and boat charters at Flathead Lake with Invert Sports.