Effects of drainage in the Great Lakes
2005/03/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria
The Great Lakes of North America have long been used for the transport of goods and people, and in many cases river bottoms have been drained, and channels have been built for the passage of ships from one lake to another. The river between the lakes of Michigan and Eire is an example of this: In 1962 a canal was drained and built.
Well, in the lakes of Michigan and Huron they have begun to see the consequences of this work: the bottom has descended about 18 meters on average and the water level has descended between 20-33 cm. These two lagoons are linked by various geological structures. Therefore, in influencing one of them, conclusions have also been seen in the other.
