NOAA has published some of their data for March, 2009. Except for a couple of low records, not much unusual about temperatures.
The snow and ice records in the Lake Superior region will continue to contribute to lowering the water levels in the Great Lakes... as some people measure it... if you ignore the recovery during the last couple of years, despite the deepening of the shipping lanes that have allowed more water to flow out of the bigger lakes... as this 2005 report states.But back to temperatures...In the past year, Lake Erie has risen a foot higher than its long-term average.In fact, one might think that some people had a "global warming" agenda since they refuse to recognize that the lakes levels have done quite well despite man-made non-CO2 efforts that are draining them.
The other lakes, and the comparison to their long-term averages, are: Ontario, 11 inches higher than its long-term average; St. Clair, 8 inches higher; Superior, 1 inch lower; Lakes Michigan and Huron, 9 inches lower.
Lakes Michigan and Huron are so much lower than their long-term averages, according to a recent study, because of dredging decades ago.
The study, which was done for a Canadian civic group, found that a commercial navigation channel dug at the bottom of the St. Clair River caused the levels of the two lakes to drop a foot.

Except if you look at the variance from average temperatures.
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