I thought water levels were supposed to go up!

Is this what AlGore ment when he said "everything that is supposed to be up is down. And everything that's supposed to be down is up"?

Great Lakes levels plunge in February: "One other possible factor: A 1960s dredging project in the St. Clair River has eroded the river bottom to twice the depth originally intended. Federal officials have estimated the project, which essentially opened a bigger drain hole in a river that lets out water from Lake Michigan and Lake Huron, has lowered water levels in those two lakes by a foot or more."