They are accessed via the northernmost segment of U.S. Route 3, between the village of Pittsburg and the Canada port of entry south of Chartierville, Quebec.

First Connecticut Lake is located in the town of Pittsburg, 7 miles (11 km) northeast of the village center.

There are three public boat launch locations,[1] and ice fishing is permitted from January through March.

A marker along the southwestern shore of the lake commemorates Luther Parker, a historical figure of the Republic of Indian Stream in the 1830s.

[6] There is one public boat launch location,[5] and ice fishing is permitted from January through March.

The Fourth Connecticut Lake Trail is a public trail maintained by The Nature Conservancy that criss-crosses the international border between New Hampshire and Quebec for 0.6 miles (0.97 km) ending with a 0.5-mile (0.80 km) loop around the Fourth Connecticut Lake.

The parking area for hikers is at the American facility of the Pittsburg–Chartierville Border Crossing, located 22 miles (35 km) north of the Pittsburg town center via U.S. Route 3.

[10] The trail has no cell phone coverage, requires some non-technical climbing, and starts at a good elevation—hikers should be prepared, even in summer.

[13] The 25,000 acres (10,000 ha) surrounding the lakes was set aside as a land conservation project in 2002 by the New Hampshire Fish and Game Department.