The Army Corps of Engineers will offer tours of The Dalles Dam at 10:30 a.m. and 2:30 p.m. Labor Day in addition to its regular weekend tour schedule.
Tours start at The Dalles Dam Visitor Center and include information on the dam's history, operations, power generation and fish passage facilities.
Visitors also can wander through the historic rose garden and park with scenic views of Mount Hood and access to the eastern end of The Dalles Riverfront Trail.
Register for a tour by calling 541-296-9778. The visitor center is off exit 87 on Interstate 84.