When the St. Marys River dried up. Could it happen again?

An extended dry period dramatically lowered water levels in the Great Lakes more than 8,000 years ago, according to a story posted on the Discovery Channel's website.

An extended dry period dramatically lowered water levels in the Great Lakes more than 8,000 years ago, according to a story posted on the Discovery Channel's website.

The article highlights research studies that show water actually stopped flowing between the lakes.

Levels then were as much as 66 feet below what they are today.

Scientists say cooler temperatures accompanied drought-like conditions during a period of climate change estimated to have occurred between 8,800 to 8,300 years ago.

And, they warn that future climate change could once again turn the Great Lakes into isolated basins of water. With devastating consequences.

To read the the full article, click here.