 Another large land use in Woodruff County is the Cache River NWR, owned by the United States Fish and Wildlife Service.Stretching approximately across adjacent counties, the NWR is listed as a Ramsar wetlands of international importance, and serves as a key wintering area for ducks and the largest contiguous tract of bottomland hardwood forest in North America.The NWR aggressively seeks willing property owners to sell land to add to the NWR's boundaries, adding in 2015.