2019 OSU Klatowa Eena Powwow Rate This Event Join us for the 43rd Annual OSU Klatowa Eena Powwow on May 18, 2018 at the Gill Colliseum in Corvallis, Oregon. The Klatowa Eena Powwow is presented in collaboration with NASA (Native American Student Association) at Oregon State University. Inside Gill Colliseum, thousands of participants [read more]