Lake Superior: lowest in 81 years

The case of the disappearing Great Lake

Excerpt:

Lake Superior, the world's largest freshwater lake, has dropped to its lowest level in 81 years. The water is 20 inches below average and a foot lower than just a year ago.

The dropping levels have had serious environmental and economic consequences. Wetlands have dried up. Power plants run at half capacity. Cargo ships carry partial loads. Boaters struggle to find a place to dock.

Comment: 9 photos in the article.