Willamette Park is a city park of about 26 acres (11 ha) in southwest Portland, in the U.S. state of Oregon. Located at Southwest Macadam Avenue and Nebraska Street, the park includes a boat dock and ramp, paved and unpaved paths, picnic areas, restrooms, a dog off-leash area, playground, soccer field, and tennis courts. As part of the South Portland Riverbanks Projects, the city began removing non-native plants from the south end of Willamette Park in 2006. Volunteers organized by Friends of Trees subsequently replaced them with 250 native trees and shrubs.