what are some bad and good effects of the three gorges dam?
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Cost\n\nOfficials report that the plan is within its US$25 billion budget and insisted early on that the project would pay for itself through electricity generation. However, the project is thought to have cost more than any other single construction project in history, with unofficial estimates of US$100 billion or more.\n\n\nIncreasing wealth disparity\n\nCritics see the dam as primarily serving the interests of east coast industrialists since they have the most need for the hydro-electric power. Unfortunately, this is at the expense of millions of people displaced from prime arable land. Making matters worse, relocation compensation has been inadequate (with corrupt officials stealing from the fund), the number of people displaced has been grossly underestimated, and their new land is of poor quality.\n\nEnvironment\n\nAlthough hydro-electric power is a renewable energy, the creation of large reservoirs can generate considerable quantities of greenhouse gases, including substantial amounts of methane, due to micro-biotic activity. Compared to the greenhouse gas emissions of conventional natural gas power plants, emissions from northern reservoirs are typically about 5% of conventional power plants, while emissions from tropical reservoirs are typically 25%.\n\nThe amount of power generated by the dam in 2009 was originally anticipated to supply about 10% of China's electricity needs, but with China's rapidly growing economy it is only projected to produce approximately 3% at the end of 2006. Over 80% of the country's power is currently produced by coal.\n\nHuge reservoirs by their nature alter the ecosystem and threaten some habitats while helping other habitats. The Chinese River Dolphin and the Chinese Paddlefish, for example, are on the edge of extinction and will lose habitat and suffer divided populations due to the dam. Of the 3,000 to 4,000 remaining critically endangered Siberian Crane, approximately 95% currently winter in wetlands that will be destroyed by the Three Gorges Dam.\n\nWhile logging in the area was required for construction which adds to erosion, stopping the periodic uncontrolled river flooding will lessen erosion in the long run. The build up of silt in the reservoir will, however, reduce the amount of silt transported by the Yangtze River to the Yangtze Delta and could reduce the effectiveness of the dam for electricity generation and, perhaps more important, the lack of silt deposited in the river delta could result in erosion and sinking of coastal areas.\n\nCities such as Shanghai need ever increasing electricity to power its new modern skyline. With 26 hydro turbines generating up to 18 gigawatts of electricity, the equivalent of roughly eighteen coal power stations or 11,000 barrels of oil per hour, the Dam will help reduce this power shortage. Filling this demand for energy with hydroelectric power will also be welcomed by environmentalists as China has been criticised for relying too heavily on fossil fuel in recent decades. While in the short term the dam will cause extra pollution, the dam could potentially reduce China's annual coal consumption by 40 to 50 million tons, thus reducing the discharge of two million tons of sulfur dioxide and 10,000 tons of carbon monoxide a year.\n\n\nLocal culture and aesthetic values\n\nThe 600 km (370 mile) long reservoir will inundate some 1,300 archeological sites and alter the legendary beauty of the Three Gorges. Cultural and historical relics are being moved to higher ground as they are discovered but the flooding of the Gorge will undoubtedly cover some undiscovered relics. Many other sites cannot be moved because of their size or design.\n\nThese historical sites contain remnants of the homeland of the Ba, an ancient people who settled in the region more than 4,000 years ago. One of the traditions of the Ba was to bury the dead in coffins in caves high on the cliff.\n\nNavigation\n\nThe installation of ship locks is intended to incre
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advantages\nsecure from monsoons by the mountains\nwhen china first inhabited, good for safety from enemies\n\ndisadvantages\ndifficult for communication
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Acid rain has been shown to have adverse impacts on forests, freshwaters and soils, killing off insect and aquatic lifeforms as well as causing damage to buildings and having possible impacts on human health.\n\n\nSurface Waters and Aquatic Animals:\n\nBoth the lower pH and higher aluminium concentrations in surface water that occur as a result of acid rain can cause damage to fish and other aquatic animals. At pHs lower than 5 most fish eggs will not hatch and lower pHs can kill adult fish. As lakes become more acidic biodiversity is reduced. Acid rain has eliminated insect life and some fish species, including the brook trout in some Appalachian streams and creeks.\n\n\nSoils:\n\nSoil biology can be seriously damaged by acid rain. Some tropical microbes can quickly consume acids but other types of microbe are unable to tolerate low pHs and are killed. The enzymes of these microbes are denatured (changed in shape so they no longer function) by the acid. The hydronium ions of acid rain also mobilize toxins and leach away essential nutrients and minerals.\n\n\nForests and other vegetation:\n\nAcid rain can slow the growth of forests, cause leaves and needles to turn brown and fall off and die. In extreme cases trees or whole areas of forest can die. The death of trees is not usually a direct result of acid rain, often it weakens trees and makes them more susceptible to other threats. Damage to soils (see above) can also cause problems. High altitude forests are especially vulnerable as they are often surrounded by clouds and fog which are more acidic than rain.\n\nOther plants can also be damaged by acid rain but the effect on food crops is minimised by the application of fertilizers to replace lost nutrients. In cultivated areas, limestone may also be added to increase the ability of the soil to keep the pH stable, but this tactic is largely unusable in the case of wilderness lands. Acid Rain depletes minerals from the soil and then it stunts the growth of the plant.\n\n\nHuman health:\n\nSome scientists have suggested direct links to human health, but none have been proven. However, fine particles a large fraction of which are formed from the same gases as acid rain (sulfur dioxide and nitrogen dioxide) have been shown to cause illness and premature deaths.\n\n\nOther adverse effects:\n\nAcid rain can also cause damage to certain building materials and historical monuments. Acid rain can cause erosion on ancient and valuable statues and has caused considerable damage. This is because the sulfuric acid in the rain chemically reacts with the calcium in the stones (limestone, sandstone, marble and granite) to create gypsum, which then flakes off. This is also commonly seen on old gravestones where the acid rain can cause the inscription to become completely illegible. Acid rain also causes an increased rate of oxidation for iron. Visibility is also reduced by sulfate and nitrate in the atmosphere.
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1.  Natural disaster...for obvious reasons\n2.  Growth and new industry\n3.  Lack of jobs and mass movement of people to better areas.
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Some good internet sites where you will get these details are \n\n\nhttp://yap.nic.in/delhi-Pollution.asp\nhttp://www.rainwaterharvesting.org/Crisis/River-yamuna.htm\nhttp://en.wikipedia.org/wiki/Ganges_River
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Well u can check out these links hope they will be informative enough:o)\n\nhttp://www.water-technology.net/projects/mubarak/\nhttp://countrystudies.us/egypt/89.htm\nhttp://carbon.cudenver.edu/stc-link/aswan/techn.htm\nhttp://reference.allrefer.com/country-guide-study/egypt/egypt106.html\n\nThese sites are talking about the high dam and toshka project.
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Wikipedia has a complete overview of it; including causes and the aftermath. I linked it below for you.
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Worse,  Man has failed miserably to improve the society it has created.  Wars have increased, divorce in America is around 50%, murder has tripled in the last fifty years, abortion has claimed million of babies, yet mankind tries to patch up the dam with paper.  Not to say the chaos in some other nations, just as the Bible predicted.\nPretty soon the dam will collapse totally.
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Nothing to add really to the other gentleman's excellent answer.\n\nExcept perhaps that the "good" effect is immediate, whereas the bad effects tend to last a long time, long enough perhaps to ruin a man's character or relationship or marriage.
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Some of the major effects are as follows: most will have normal weight, tooth erosions,dental caries (cavities), puffy face, callused knuckles, broken blood vessels in the eyes, guilt and depression. Other serious complications are: cardiac abnormalities such as bradycardia (slow heart rate), hypotension (low blood pressure), arrhythmias, CHF, cardiovascular collapse,esophageal erosions, renal abnormalities that effect the kidneys ability to filter urine, skin rashes and bruising from vomiting.
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An objective analysis of the effect of constructing a sea-level canal across Central America is attempted. This canal, unlike the present Panama canal, has not been built, though it is a feasible proposition. The canal would run almost north-south, and would be 50 miles long. Proposed routes are noted; these resulted from a joint study by the US Army Corps of Engineers, the Atomic Energy Commission and the Panama Canal Co. in 1964. Extracts from their report are reproduced. In evaluating the report, the author takes account of some biological and physical features of the area, with particular attention to the potential effects of allowing mixing of Atlantic and Pacific biotas. The work of the Committee of Ecological Research for the Interoceanic Canal (CERIC), established to investigate the possible effects of building the canal, is reviewed. Finally, an alternative plan, involving the construction of a third, larger, set of locks on the present canal is presented, and the author concludes with the hope that ecological impact of canal building will be given as much attention as economic etc. when the decision to build, or not to build, the new canal is taken.
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EFFECTS ON MENTAL HEALTH!!!!!!!\n\nCONTINIOUS LEARNING MAKES U MAD!!!!
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the negative affects outweigh the positive ones by far. I would suggest phenegran and soda crackers !
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http://www.karun3.com/technical/?item=7\nhttp://www.karun3.com/related%5Finfo/about%5Fhydro/hydropower%5Fmachinery/
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pollution can cause poisonous run off, and destroy the habitat of water animals, it would also hurt the animals who drink from the water source. It causes smog, its very bad to breath, with all of the pullution building uo it traps heat in earths atmosphere, causing global warming, the planet heats up. theres also alot of other tihngs.
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Lots of pollution. According to estimates , it polluted 330 thousand of hectares of land and increased the SPM by 55 PPM. more than 5000 adults developed breathing problems as a result of that and it resulted in more than 900 stillbirths in the next two years
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depends on how big it is. here is a link that gives you how much damage that would be caused depending on its size, velocity, ect:\n\nhttp://www.lpl.arizona.edu/impacteffects/