Visitors to the refuge enjoy viewing a variety of wildlife within a few minutes of the Portland-Vancouver metropolitan area. The landscape provides sanctuary throughout the seasons for waterfowl, shorebirds, raptors, river otter, black-tailed deer, coyotes, herons, and numerous other species of wildlife. The Refuge includes several areas for exploration. The Carty Unit and its 2-mile Oaks to Wetlands Trails is open year-round during daylight hours. The River ‘S’ offers the 1-mile Kiwa Trail, which is open for use from May 1 to September 30. The River ‘S’ Unit also offers the 4.2-mile Auto Tour Route and observation blind that are open year-round during daylight hours. To limit disturbance to wintering waterfowl , visitors must remain in their vehicles along the Auto Tour Route from October 1 to April 30.Dogs are not allowed.