Team Logo. The Portland Rockies were a team in the Northwest League. They were an affiliate of the Colorado Rockies. They moved to Washington state and became the Tri-City Dust Devils. Retrieved from "https://prosportsteams.fandom.com/wiki/Portland_Rockies?oldid=16346" Categories: Former NWL Teams Teams in Oregon Teams in Portland (OR) Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.