... of the water is pumped into an upper reservoir and reused during periods of peak-demand. Most hydropower plants are built through federal or local agencies as part of a multipurpose project. Hydroelectric plants have a preventive start up cost, but once it is built the cost to maintain it is low. In addition to generating electricity, dams and reservoirs provide flood control, water ... ...

• Word Count: 1458
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... about the impact of dams said that degraded water quality is one of the chief concerns. Organic materials from within and outside the river that would normally wash downstream get built up behind dams and start to consume a large amount of oxygen as they decompose. In some cases this triggers algae blooms which, in turn, create oxygen-starved "dead zones " incapable ... ...

• Word Count: 2430
• Approx Pages: 10
• Grade Level: Undergraduate

... the dilemma of who gets the rights to construct these dams on the Mekong River flow from North of China down to Vietnam and escape to the East Sea. China built four large hydropower plants upstream in 1992 to 2003, which created flooding problems for other countries that also have access to the Mekong River downstream like Laos, Vietnam and Thailand ... ...

• Word Count: 1455
• Approx Pages: 6
• Grade Level: Undergraduate

... stream and in the reservoir behind the dam. Sometimes the types of fish that will live in the river are changed."1 Like aquatic life, wildlife is affected. When dams are built and filled with water, the wildlife is moved into a new habitat, which can cause high mortality rates with any species.2 ______________ 1. The New Book of Knowledge, s.v. "Dams." 2. http://www.fishsniffer.com ... ...

• Word Count: 1560
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... sits on the Atlantic coast, with only one state not bordering the Atlantic Ocean. Pennsylvania doesn't border the Atlantic, but it does border the Delaware River, and a plant could be built in that vicinity, any power that can't be produced by these turbines will be produced by the nuclear power plants. Hydroelectric dams are very high-tech, but simple machines. A dam ... ...

• Word Count: 2154
• Approx Pages: 9
• Has Bibliography

... , huge drilling towers are left. These are an eyesore, and create a hazard when they, overtime, corrode once abandoned. Millions of years ago, the remains of plants and animals decayed and built up in thick layers. This decayed matter from plants and animals is called organic material. Over time, the mud and soil changed to rock, covered the organic material and trapped ... ...

• Word Count: 2467
• Approx Pages: 10
• Grade Level: High School