Lake Kampeska is a 3,800-acre natural glacial lake on the western edge of Watertown in Codington County in northeastern South Dakota — the primary recreational boating lake for South Dakota’s fourth largest city and the most accessible large natural lake to the Watertown metropolitan area. Kampeska sits immediately adjacent to Watertown’s western city limits, making it one of the most genuinely urban natural lakes in the South Dakota directory — residential development, city park access, and the Kampeska Lake Marina serve a year-round local boating community that can reach the lake in minutes from downtown Watertown. The lake’s glacial basin produces walleye, northern pike, yellow perch, and bass fishing managed by South Dakota Game Fish and Parks. Lake Kampeska and the adjacent Lake Pelican to the west form a connected glacial lake system that gives Watertown area boaters two lakes within reach of a single launch. Find Boat Services lists verified boat repair, motor service, electronics installation, trailer repair, and winterization providers serving Lake Kampeska within 25 miles across Codington County and the greater Watertown corridor.