Some days it's just you, loons, and moose, while you traverse around Hayes Lake. Fed by the north fork of the Roseau River, the lake supports crappie, sunfish, large mouth bass, and northern. Birdwatchers have spotted over 200 species in or near the park. The summer is perfect to look for orchids, gentians, and blueberries (you can pick the berries, but not the flowers). Visitors also enjoy swimming and canoeing in the lake, along with camping. Trails for hiking, skiing, snowmobiling, and horseback riding connect with the Beltrami Island State Forest.

Wildlife
Black bears are residents of the northern forest and are seen occasionally in the park. Moose, fisher, otter, bobcat, pine martin, lynx, and timber wolf can be seen in and around the park. More common wildlife include: deer, fox, raccoon, porcupine, beaver, mink and skunk. Along the shoreline, loons, herons, grebes, and other water birds can be observed.

History
Hayes Lake officially became a state park in 1967. Water-based recreation was a priority for the area, so one of the first things to be developed for the park was a lake, formed by building a dam on the river. Both the lake and the park were named for A.F. Hayes, an early resident and an advocate of the lake's creation. The park was dedicated in 1973, and the lake continues to attract visitors to its swimming and fishing opportunities today.

Geology
When Glacial Lake Agassiz receded from large areas of northwestern Minnesota approximately 10,000 years ago, it left behind a flat landscape. The only prominent interruptions of this are the beach ridges and river valleys formed as the ancient lake retreated. The glacial lake-bottom landscape within the park was probably exposed to the erosive forces of wind and water 9,000 to 11,000 years ago and several thousand years earlier than areas to the northwest. As a result, from scenic points along the park's trails, visitors can see how the action of the water has cut, gouged and eroded a steep u-shaped, small floodplain valley.

Landscape
Located on the western perimeter of vast, sparsely populated wildlands within Beltrami Island State Forest, Hayes Lake State Park offers visitors recreation enjoyment and access to hundreds of square miles of untamed land great scenic views. Man-made Hayes Lake meets the forest edge for spectacular shoreline timber views.