High water and a cautious U.S. Army Corps of Engineers, which has closed many of its beaches, boat ramps and parks around the swollen lake, aren’t slowing down the start of Lake Lanier’s busy season. With the lake still sitting at almost 1,074.4 feet above sea level, Lake Lanier is the highest it’s been going into summer for the past five years. Four weeks of rain pushed the lake up another 3 feet between May 15 and June 5, and more rain might be coming this weekend and next week.