Environmental Issues

• The water levels of the Great Lakes are now at lows that have not been seen since the 1920s. Over the last century, the difference in water levels has ranged from nearly 4 feet for Lake Superior and between 6 and 7 feet for the other Great Lakes.
• To date, nearly 150 alien species, have invaded the Great Lakes, resulting in catastrophic results for the indigenous wildlife of the lakes.
• Over 360 chemical compounds have been identified in the Great Lakes.