Houghton Lake is a large lake in Roscommon County. The unincorporated community of Prudenville is at the southeastern end of the lake, while the unincorporated communities of Houghton Lake and Houghton Lake Heights are on the southwest and west shores. It is the largest inland lake in the state of Michigan, and one of the largest natural inland lakes in the United States. Houghton Lake has c. 30 miles of total shoreline It is an extremely popular resort and fishing area year round. Houghton Lake is the site of Tip-Up-Town USA, a large ice fishing and winter sports festival with several events on the frozen waters of the lake itself.
M-55 follows the southern shore, while US 127 passes just to the west. M-18 and I-75 pass just to the east.
Houghton Lake is notable for the annual winter carnival, Tip Up Town USA, which is held during two consecutive weekends in January.