Milo McIver State Park is a riverside Oregon park on the Clackamas near Estacada, offering day-use and overnight recreation that includes camping, trails, boating, bird watching, disc golf, and a notable equestrian area. It is named for Milo K. McIver, whose twelve years on the Oregon Highway Commission, including four as chairman, coincided with major highway and interstate development in the state. The park also holds an unusual place in Oregon cultural history as the site of the government-sponsored Vortex I music festival in 1970. Its ecological significance includes Townsend's big-eared bats and the state's largest yew.