(Beaver Dam) Beaver Dam Lake was declared officially open and free of ice late Tuesday night or early Wednesday morning. That’s according to Dick McMillan of the Beaver Dam Lake Improvement Association who says the lake is open when there’s no more ice between the Highway G bridge at Bayside Supper Club and the bridge on the north end of the lake near the Dockside Bar and Grill. The earliest the ice was opened was on February 28 in 1998. The latest was April 20 in both 1923 and 1972. Last year, the ice opened on March 27.