Located on the outskirts of Portland, OR, Tualatin River National Wildlife Refuge is one of only a handful of urban national wildlife refuges in the country. Situated within the floodplain of the Tualatin River, the Refuge comprises less than 1% of the 712 square mile watershed. Yet, due to it's richness and diversity of habitats, the Refuge supports some of the most abundant and varied wildlife in the watershed.