The entire Arb is a state game refuge and contains a variety of natural habitats including flood plain forest, upland forest, the Cannon River, wetlands, pine plantations, tallgrass prairie, and oak savanna. Approximately one-third of the Arb is rented to local farmers, but each year some agricultural land is being restored to natural communities.
Visitors are welcome, but please respect ongoing ecological restoration projects and experiments.
Prairies and wetlands are particularly susceptible to damage by careless visitors. If you see an area that is flagged, please do not disturb it in any way. Due to lack of sanitary facilities, there is no camping in the Arb. There are no motorized vehicles allowed except for maintenance purposes. Bikes can pose a threat to the safety of Arb visitors, to the protection of rare species, to ecological restoration work, and to scientific research projects.