The Army Corp of Engineers reports this week that the Great Lakes are up from a year ago. Presently, all of the Great Lakes remain higher than they were at this time last year. Lake Superior is 15" above last year's level while Lake Michigan,Lake Huron,Lake St.Clair are all 7" above last Year. Lake Erie 8" above and Ontario 9" above. Lake Superior is forecast to go up 1" over the next 30 days. Lake Michigan and Huron are likely to remain unchanged and Lakes Erie,St.Clair, and Ontario could drop 3 to 5"  the rest of the summer.

Hot and humid conditions help to offset evaporation of the lake water. Plus abundant thunderstorms this summer are good way to keep levels steady. You would need excessive rain all summer for levels to rise significantly. The Great Lakes see their biggest jumps in spring when winter snow and ice melt and runoff of area rivers is high. The fastest decline in levels are in fall and winter when cold air promotes evaporation. Until ice starts to form on the lakes we usually see lower levels. Ideally a hard freeze would stop the evaporation and heavy snow on top of the ice would insure level rises in the spring.