Horseshoe Lake Reservoir, a 150-acre body of water in Lathrop State Park, offers an ideal environment for paddlers seeking a wakeless experience. The lake features two dedicated launch points: a boat ramp on the north side and an accessible kayak/canoe launch on the south side. As a wakeless-only lake, Horseshoe provides a perfect haven for kayakers and canoeists.

The lake's location between the foothills and plains of southern Colorado results in warmer water temperatures than typical mountain reservoirs, averaging 75 degrees Fahrenheit during summer months. Boating is permitted from March 15 through October 15, with a seasonal closure from November 1 through January. All boats must undergo inspection for aquatic nuisance species before launching, and an ANS stamp and current boat registration are required.

The surrounding landscape showcases views of the Spanish Peaks and the distinctive Walsen Ridge, a volcanic dike formation along the northern boundary. The shoreline environment features pinyon-juniper woodland and diverse wetland communities that attract various waterfowl and raptors.

Park facilities include picnic areas with covered tables and bathroom facilities. The park is open daily from 5 a.m. to 10 p.m., with entrance fees of $10 per vehicle or $4 for individual entry. Park visitors have access to 40 picnic sites throughout the grounds.

Located within Colorado's first state park (established 1962), Horseshoe Lake Reservoir shares the 1,451-acre park with its companion, Martin Lake. While Martin Lake allows motorized activities, Horseshoe's wakeless designation makes it the preferred choice for paddlers seeking a quieter experience. Fish species include rainbow trout, channel catfish, bass, walleye, bluegill, and crappie, offering opportunities for anglers paddling the lake.