From Ridgefield National Wildlife Refuge Administrative Office
“Ridgefield National Wildlife Refuge is 5,300 acres of protected habitat along the Columbia River floodplain. The Refuge is broken up into several management units.
Two of these units can be visited by the public. The hours of this listing refer to the Refuge Office hours, not for visiting the Refuge. Refuge hours are dawn to dusk, check the website for current visiting hours. The Carty Unit- 28908 NW Main Ave. Includes the Refuge office, Cathlapotle Plankhouse, Oaks-to-Wetlands Trail, and the Seasonal Carty Lake Trail. The River ‘S’ Unit- 1071 S Hillhurst Rd. Includes the Auto Tour Route and seasonal Kiwa Trail. Stay up-to-date at: www.Ridgefieldfriends.org, or www.Refuge2020.info, as well as the FWS website.”