Despite a drier than normal June across much of the Lake Superior basin the big lake has set a new record-high Water level for July 1, the International Lake Superior Board of Control reports.
The lake rose only 1.2 inches in June — a month it typically climbs 3 inches — but still managed to start July 1.6 inches above the previous monthly high water record set in 1943.
Lake Superior sat 14 inches above the normal July 1 level and 10 inches higher than at this time in 2018
"There is a much-increased risk of shoreline erosion, lakeshore flooding and coastal damages across the upper Great Lakes system,'' the board noted in its monthly report. "The Board advises all those that may be affected to prepare for potentially severe coastal impacts, especially during periods of strong winds and high waves."
Meanwhile lakes Huron and Michigan saw a wetter than normal June and joined the rest of the Great Lakes with record high levels by the end of the month. The lakes rose four inches in June, more than their usual two-inch climb, and now sit 31 inches above average and 14 inches above the July 1, 2018 level.
All of the Great Lakes have reached record levels in recent months during an unusually widespread, prolonged wet period across a large swathe of the mid-continent. While drier weather has made it less likely, it's still possible Lake Superior could set an all-time record high water level later this summer or early fall.