Lake Vermillion is a 1,300-acre natural glacial lake in McCook County in southeastern South Dakota — a productive walleye and northern pike lake serving the Mitchell and Sioux Falls corridor in the James River valley. The lake sits in the rolling glacial drift plain of southeastern South Dakota approximately 15 miles south of Mitchell, giving it convenient access from both the Mitchell market and the outer Sioux Falls western reach. Lake Vermillion State Recreation Area on the lake’s eastern shore provides boat launch facilities and camping access for anglers and recreational boaters from across the southeastern South Dakota corridor. The walleye and northern pike fishery managed by South Dakota Game Fish and Parks draws consistent angling pressure throughout the open water season. Find Boat Services lists verified boat repair, motor service, electronics installation, trailer repair, and winterization providers serving Lake Vermillion within 25 miles across McCook and Davison counties.