"Electricity generated by the weight of water flowing downhill by gravity is hydroelectric power. Without solar energy all water would flow downhill by gravity once and collect in the oceans. The sun provides the energy to evaporate water and the temperature difference which causes rain and snow to fall. This renews our sources of fresh water (lakes and streams) and therefore our sources of hydroelectric power. Large Hydroelectric projects (dams) cause damage to the environment. People, and cultures, are displaced or destroyed, animals and habitat are displaced and destroyed, natural beauty is destroyed. Eventually even the largest dams will fill with silt and become rivers again. Only small hydroelectric projects which preserve the rivers and streams they use in a near natural state are sustainable."
Found from http://www.norcalsolar.org/resources/glossary.html
Click on one of the links below for more information about Hydropower!
The History of Hydropower
Types of Hydropower
Facts about Hydropower
Environmental Issues of Hydropower
Additional Hydropower Links
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