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Free research papers and essays on topics related to: dredging

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  • Dredging The Hudson River - 1,928 words
    Dredging The Hudson River For the past year, the subject of polychlorinated biphenyls in the Hudson River and what should be done about them has been discussed by politicians and residents all over the capital region. Often the top story on the local news, the front page headline of the newspaper, the subject of a special on television, or the reason for a town meeting, dredging has become a much debated topic. With all the information being exchanged and opinions published, it is easy for the average person to become confused. In an attempt to make things clear, the following report defines dredging, PCBs, and presents a short discussion of each side of the Hudson River dredging debate. POL ...
    Related: dredging, hudson, hudson river, water treatment, problems associated
  • Brisbane River - 1,955 words
    Brisbane River 1.0 INTRODUCTION The Brisbane River has flowed for over 400 million years. The catchment of the Brisbane River has overcome phases of flood and drought while its origins altered as the surrounding land changed overtime. In 1823, John Oxley entered the river for the first time. At the time the river appeared clean and unpolluted. Oxley immediately recognised the river's potential as a site for new settlement, through his recommendation the city of Brisbane was established in 1825. The Brisbane River extends inland for 300km reaching its source at the foothills of the Great Dividing Range. The river's catchment occupies an area of approximately 30,000km2 and releases it waters i ...
    Related: brisbane, river basin, central business, water quality, improving
  • Coastal Erosion - 1,484 words
    Coastal Erosion Coastal Erosion With Reference to examples discuss the view that coastal erosion is caused by human intervention as a posed to natural processes. For many decades the approach to rapid coastal erosion was to build up sea defences, to try and slow down or even stop the erosion. Initially the attempts were thought a success, however after some years it was realised that the power of the sea and waves could overcome human attempts. Only could protection be a success if huge costs were going to be involved. Many methods around the British Isles have taken place in he last 50 years with many failures occurring. It is very rare to find a coastline that shows a decrease in the rate ...
    Related: coastal, erosion, natural process, good news, wave
  • Hydroelectricity Dams - 601 words
    Hydroelectricity & Dams Water has proven to be a valuable asset in the production of electricity. The great need of energy in economical quantity, due to increased industry and population growth. Hydroelectricity is used worldwide where there is a means and a need for energy. Hydroelectric dams are very high-tech but simple machines. A dam holds back water, creating a reservoir of potential power. On the upper side of the dam, a water gate is opened to let water surge through a tunnel leading to turbines. The water turns the turbines which in turn spin generators to generate electricity. The electricity is carried through cables to wherever it is needed. Oroville Dam is the tallest and one o ...
    Related: dams, hydroelectricity, san francisco, water quality, habitat
  • Isaac Storm - 986 words
    Isaac Storm The Storm of 1900 On Friday evening, September 7, 1900, many of the 37,000 residents of Galveston, Texas, were settling down to dinner, few if any of them concerned about the steady 15 mph northerly wind rattling their windows. Within 48 hours, at least 8,000 of the townspeople would be dead, victims of the single worst natural disaster in U.S. history. Relatively few people are aware that the deadliest natural disaster in the United States was the hurricane that struck Galveston Island on September 8, 1900. One of the best resources that can be found to help fully understand the significance of this storm is Isaac's Storm: A Man, a Time, and the Deadliest Hurricane in History by ...
    Related: isaac, storm, storm surge, cape verde, gulf of mexico
  • Mount St Helen - 659 words
    Mount St. Helen Mount St. Helen is a volcano located along the Cascade range which is a volcano chain stretching from Northern California to British Colombia. It now stands at a height of 8,364 feet above sea level. Mount St. Helen was on of the smaller eruptions of five major ones in Washington State. Its elevation before the eruption was 9,677 feet high. On March 29, 1980 after a period of one-hundred and twenty-three years of inactivity a earthquake under the volcano quaked, and seven days later a pheartic (steam) explosions began. As magma pushed up from beneath the earths surface, the north side of the mountain developed a bulge. Angle and slope-distance measurements indicating that the ...
    Related: helen, mount, united states geological, washington state, elevation
  • Ocean Dumping - 638 words
    Ocean Dumping Ocean Dumping The practice of ocean dumping should be banned. Marine pollution is at the heart of interest in todays search for a clean environment. Not only does ocean dumping add to the unsightliness of the once beautiful and pristine waters; it also kills the marine life which inhabits those waters. Pollution on a grand-scale is wreaking havoc on the Earth. The ocean is not an exception. In 1996, a bill, which would ban the dumping of dredge spoils in the Long Island Sound, was submitted in congress by Michael Forbes (Freedman). At that time, Congressman Forbes predicted that all dumping in the United States would end in the foreseeable future. He sees ocean dumping ending i ...
    Related: dumping, ocean, world trade organization wto, free trade, garbage
  • Panama Cannal - 1,010 words
    ... plumbing. They sprayed pesticides by the ton. They built entire towns, complete with housing, schools, churches and meeting halls. When the cleaning was finished, Stevens began work on digging the trenches. Gigantic steam shovels scooped tons of dirt. Railroad cars ran continuously on double tracks. The used the dirt removed to form the charges Dam. By December of 1905, yellow fever had been officially eradicated in the canal region. Lieutenant Colonel Thomas Goethals took over for Stevens who resigned. Goethals was know for being demanding and rigidly organized. The hardest part of the canal process was the Culebra Cut, where 100,000,000 cubic yard of dirt and rock had to be moved.(Bri ...
    Related: panama, panama canal, english speaking, pacific ocean, permit
  • Rising Sea Level - 1,371 words
    Rising Sea Level Rising Sea Level Rising sea levels have been disturbing geographers and geologists for some time now. Scientists are constantly trying to prevent the effects rising waters are causing, which mainly includes beach and island erosion. So far, their attempts with man-made development on beaches along the eastern coast of America have only made things worse. "Up and down the U.S. coast, public money is subsidizing private property on islands made of sand, the stuff on which, as the Bible says, only fools build" (Ackerman 7). In recent years there has been a trend towards living on the barrier islands of America's Atlantic Coast. High rise condominiums, numerous shops, and severa ...
    Related: level rise, rising, east coast, publishing company, maintenance
  • Sylvan Island - 2,505 words
    ... below the level of the island and is often tricky to get down to. The island itself is very flat with few fluctuations in its surface (Moline 30). There are only two noticeable fluctuations on the entire island and one is the old limestone quarry that has been filled in, but still has depreciation in ground level. Types of Soils The heavy limestone buildup under the soil prevents the island from having mature soil. A layer of humus covers the limestone less than six to eight inches thick on the eastern side of the island, and considerably thicker getting up to two feet on the western side. (Moline 30). Vegetation differences cause the difference in thickness. The western side of the isla ...
    Related: different kinds, first year, mississippi river, trees, dirty
  • The Chrysanthemums - 1,196 words
    The Chrysanthemums On Henry Allen's ranch east of Salinas Elisa plants yellow chrysanthemums as Henry is selling thirty head of cattle to agents of the Western Meat Company. After he and Scotty go to round up the cattle, a tinker shows up. He asks for work which Elisa says she hasn't. He asks for seeds for a lady on his route. Elisa gives him seedlings with instructions, and then she finds work for him which he does professionally. To celebrate the sale Henry drives her to Salinas for dinner at the Cominos Hotel and a movie; they drive past the tinker on the road and she privately weeps. 2. The White Quail Mary has her garden designed before its lot is bought, before she's married. She picks ...
    Related: chrysanthemums, on the road, san francisco, henry allen, fish
  • The Hudson River And Pcb Pollution - 1,523 words
    The Hudson River And Pcb Pollution The Hudson River and PCB Pollution The Hudson River is a body of water that stretches for 315 miles from the Adirondack Mountains to the Battery in Manhattan, reaching its deepest point of 216 feet in the Highlands near Constitution Island and West Point and reaches its widest point of 3 miles across at Havestraw. This river is one of the most beautiful and scenic of the Tri-State area. Unfortunately, it happens to be New Yorks most polluted river. The river has been influenced upon since the early 1600s, when Englishman Henry Hudson commanded the Dutch ship Half Moon on an exploration of the river, certain that he had discovered a trade route to China. It ...
    Related: hudson, hudson river, industrial pollution, pollution, york press
  • The Panama Canal - 984 words
    The Panama Canal The Panama Canal The Panama Canal was one of the greatest accomplishments by mankind, in my opinion. Among the great peaceful endeavors of mankind that have contributed significantly to progress in the world, the construction of the Canal stands as an awe-inspiring achievement. The idea of a path between North and South America is older than their names. In 1534, Charles I of Spain, ordered the first survey of a proposed canal route through the Isthmus of Panama. More than three centuries passed before the first construction was started. The French labored 20 years, beginning in 1880, but disease and financial problems defeated them (http://www.historychannel.com/). In 1903, ...
    Related: canal, panama, panama canal, world war i, health problems
  • Time And Guilt - 957 words
    Time And Guilt Time and Guilt In Tillie Olsen's narrative I Stand Here Ironing, I interpreted that there was a reflection of the loss of time and the sense of guilt between a mother and daughter. This is displayed in the authors word choice, point of view, imagery and tone. Olsen begins her narrative while ironing and talking on the phone. Her daughter needs help, she is told. So she begins to ask herself a million questions. She wonders why her daughter needs help, how she can help her, and what she could have done to prevent her from straying so far in the first place. As these questions run through her mind the iron in her hand moves swiftly back and forth in rhythm, throughout the entire ...
    Related: guilt, point of view, single parent, life story, confronted
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