Lathrop State Park provides multiple access points to Horseshoe Lake Reservoir, including a boat ramp on the north side of the lake and an ADA-accessible canoe/kayak launch on the south side.

The park requires a daily vehicle pass ($10) or annual pass, and all motorized watercraft must pass mandatory aquatic nuisance species (ANS) inspections at the park entrance before launching.

Horseshoe Lake is designated as a wakeless (no-wake) zone, making it ideal for kayakers, canoeists, and sailboats, with inspection hours daily from 6 a. m. to 9 p. m.