On Saturday, June 16, Ice Harbor Lock and Dam is celebrating the 50th anniversary of its construction with a commemoration event beginning at 10 a.m. and an open house from 11:30 a.m. to 4:00 p.m. The public is invited to the day’s festivities marking U.S. Army Corps of Engineers efforts to build the dam, navigation lock, powerhouse, fish ladders and recreation areas. The keynote speaker will be announced later.