- The Julia Butler Hansen Refuge for the Columbian White-Tailed Deer is a wildlife refuge located in southwestern Washington and northwestern Oregon, United States. It was established in 1972 specifically to protect and manage the endangered Columbian white-tailed deer. The refuge contains over 5,600 acres (23 km2) of pastures, forested tidal swamps, brushy woodlots, marshes, and sloughs along the Columbia River in both Washington and Oregon.