Snowmelt, rain push up Superior

MARQUETTE – Water supplies to Lake Superior over the last month were well above average, boosting the May lake level increase by the second-highest measure in nearly a century.

The U.S. Army Corps of Engineers in Detroit said the Lake Superior level climbed 9 inches in May, which was 5 inches higher for May than average.

“The 9-inch rise in May is the second highest since 1918, a result of snowmelt and above average precipitation received in the Superior Basin during the past month,” Corps officials said in a briefing on Great Lakes levels.

Lake Superior is currently about 7 inches below its long-term average beginning of June level and is 3 inches above the level recorded a year ago. The lake is expected to continue to rise this month.

The level of lakes Huron and Michigan rose 5 inches in May, which was 2 inches above average. The levels of those two lakes are now 20 inches below their long-term average beginning of June level and 2 inches lower than a year ago.

Lake Michigan and Lake Huron are both expected to continue to rise throughout the month, the Corps said.

John Pepin can be reached at 906-228-2500, ext. 206. His email address is jpepin@miningjournal.net.