Hartford Beach State Park, State park on Big Stone Lake in Roberts County, South Dakota, United States

Hartford Beach State Park is a natural area on the border between South Dakota and Minnesota along Big Stone Lake. The terrain features steep bluffs dotted with boulders, thick forests, and wooded shorelines that form a distinct landscape zone.

Hartford Beach was one of three parks created in 1945, when the South Dakota Legislature established the statewide park system; the others were Lake Herman and Oakwood Lakes state parks. Until then Custer State Park, opened in 1919, was the only park run by the state.

Hartford Beach was one of three parks created in 1945, when the South Dakota Legislature established the statewide park system; Lake Herman and Oakwood Lakes were the other two. Until then Custer State Park, opened in 1919, was the only park run by the state. The park sits on Big Stone Lake in Roberts County.

Cabins and campsites sit on the Big Stone Lake shore, with swimming, fishing, boating, hiking, disc golf and geocaching available year-round. The park lies in Roberts County, about 15 km from Wilmot, at roughly 303 m above sea level. Summer and early autumn give the mildest conditions for overnight stays.

Hartford Beach was one of three parks created in 1945 when the South Dakota Legislature established the state park system, alongside Lake Herman and Oakwood Lakes. Until then Custer State Park, opened in 1919, was the only park run by the state.