Owyhee Tunnel No. 1: Owyhee Lake, OR May 16, 2011May 25, 2011 Hydroelectric Projects, NW Hydro and Tours, Oregon Hydroelectric Projects
Mitchell Butte: Mitchell Butte Lateral, OR May 15, 2011December 30, 2011 Hydroelectric Projects, NW Hydro and Tours, Oregon Hydroelectric Projects
