Waterpower, power derived from the fall of water from a higher to a lower level, and extracted by means of waterwheels or hydraulic turbines (see Turbine). Waterpower is a natural resource, available wherever a sufficient volume of steady water flow exists. The development of waterpower today requires extensive construction, including storage lakes, dams, bypass canals, and the installation of large turbines and electric generating equipment. Because the development of hydroelectric power requires a large capital investment, it is often uneconomical for a region where coal or oil is cheap, even though the cost of fuel for a steam-powered generating plant is higher than the cost of running ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

government would have to assume a major share in their construction. Motivated by the search for the multiple use of water resources, including navigation, flood control, and irrigation, in addition to power production, the Tennessee Valley Authority, or TVA, started government participation in large-scale waterpower development in 1933.
Most major installations depend on a large water-storage reservoir upstream of the dam where water flow can be controlled and a nearly constant water level can be assured. In contrast to storage-type plants, which depend on the impounding of large amounts of water, a few examples exist where both the water drop and the steady flow rate are high enough to permit so-called run-of-the-river installations; one such is the joint U.S.-Canadian Niagara Falls power project.
Although hydroelectric-power generation in the U.S. has increased from about 16 billion kWh in 1920 to about 280 billion kWh annually in the 1990, the percentage of electricity generated ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.

Already a member? Login


Hydroelectricity. (2007, June 23). Retrieved October 21, 2018, from http://www.essayworld.com/essays/Hydroelectricity/66909
"Hydroelectricity." Essayworld.com. Essayworld.com, 23 Jun. 2007. Web. 21 Oct. 2018. <http://www.essayworld.com/essays/Hydroelectricity/66909>
"Hydroelectricity." Essayworld.com. June 23, 2007. Accessed October 21, 2018. http://www.essayworld.com/essays/Hydroelectricity/66909.
"Hydroelectricity." Essayworld.com. June 23, 2007. Accessed October 21, 2018. http://www.essayworld.com/essays/Hydroelectricity/66909.
Join today and get instant access to this and 50,000+ other essays

Added: 6/23/2007 05:22:12 PM
Category: Science & Nature
Type: Free Paper
Words: 506
Pages: 2

Save | Report


Save and find your favorite essays easier

Location Of Brazil
Energy Flow Systems
Effects Of Dam Building
Photochemical Smog
Comparison Of Social Indicator
The Industrial Heartland
France 2
Copyright | Cancel | Contact Us

Copyright © 2018 Essayworld. All rights reserved