The effects of Dams on Human Populations
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The effects of Dams on Human Populations
By: Steve Abbenhaus and John Coyle
Curated by John Coyle
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China's Three Gorges Dam: An Environmental Catastrophe?: Scientific American

China's Three Gorges Dam: An Environmental Catastrophe?: Scientific American | The effects of Dams on Human Populations | Scoop.it

China created some dams because they thought it would be benefically.They could have been more wrong. This dam was a complete failure. The environment has suffered because of these dams. The Three Gorges Dam which is the world's largest dam is expected to be a "nightmare" for the Chinese government because of the problems that it is causing. 

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Hydroelectricity - Wikipedia, the free encyclopedia

Hydroelectricity - Wikipedia, the free encyclopedia | The effects of Dams on Human Populations | Scoop.it

This graphic shows how hydroelectricity works. Hydroelectricity is created with dams.

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My Scoop on the effects of Dams on Human Populations

By definition a dam is a barrier that runs across a river or steam to control the flow of water. Dams are created for multiple purposes inlcuding human consumption, generation of electricity, flood control, and recreation. For centuries humans used dams for different reasons.  Most of the United States of America's dams were made for flood control reasons. 

 

Dams have positive parts but they are have some negative parts. Some postive effects on humans are that humans must work to build the dams which create jobs. The Hoover Dam was built during the Great Depression to create jobs and it was successful in that aspect. Dams are like a safety net because floods are a lot less likely when water is damed. Also water electricity is created by dams. 

 

 

Some negative parts of dams are that reservoirs are created. Also dams disrupt fish and other animals which later effects the human population because the fish population decreases which increases the price to buy fish to eat.  

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Negative Impacts of Dam Construction on Human Populations Can Be Reduced, Author Says | Caltech

Negative Impacts of Dam Construction on Human Populations Can Be Reduced, Author Says | Caltech | The effects of Dams on Human Populations | Scoop.it

More and more dams are likely to be built in the future, however this could potentially be harmful to the environment. Even though there are beneficial factors of dams, there are also negatives. There is a change in habitat for some animals and humans. Hundreds of millions of people have been affected by dams in the last one hundred years. fourty to eighty million people have been forced to relocate by flooding caused by malfunctions and leaks from dams. Many lives have been disrupted by the change of the river flow of dams.

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BLDGBLOG: We'd all be living in dams

BLDGBLOG: We'd all be living in dams | The effects of Dams on Human Populations | Scoop.it

This picture shows a properly functioning dam. You can see that no water is leaking. 

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Dams or no Dams!

Dams or no Dams! | The effects of Dams on Human Populations | Scoop.it

This dam was not made properly and does not work. Not all dams are made perfectly

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Environmental Effects of Hydrological Alterations

Environmental Effects of Hydrological Alterations | The effects of Dams on Human Populations | Scoop.it

According to this article "Large dams and river diversions have proven to be primary destroyers of aquatic habitat, contributing substantially to the destruction of fisheries, the extinction of species, and the overall loss of the ecosystem services on which the human economy depends. Their social and economic costs have also risen markedly over the past two decades." Large dams are classified as being 15 meters from the foundation to the crest. Dams affect humans by the destruction of aquatic life makes the fishing market collapse, which hurts the economy in that area.

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