Determine Which Of The Areas Along Toronto's Shoreline Is At The Greatest Risk For Coastal Erosion.

4124 words - 16 pages

IntroductionErosion of coastlines and beaches is a problem that can impact any settlement or city located near a body of water. In both the long and short run, coastal erosion can have enormous detrimental impacts on an area, in terms of both geography and economics. This issue is important the world over, as more than half the world's population lives within two hundred kilometers of a coastline (Committee). As a result, there are more than 3.5 billion people who could be harmed by coastal erosion and its effects (Committee).Eroding shorelines can have several negative effects. First, people are forced to evacuate their homes (Pilkey). This results in large costs for both homeowners and the government, which is forced to buy homes from people whose houses are at risk from coastal erosion (Pilkey). Also, there are geographic consequences as eroded land sediment is carried back into the water by destructive waves that gradually decompose the coastline, resulting in polluted water (eurosion).Toronto, Ontario, Canada is one city whose coastline has truly suffered the effects of coastal erosion. Toronto is Canada's largest city, with the main metropolis and nearby regions accounting for more than 4 million of Canada's 35 million people. Because the CBD and immediately surrounding areas become extremely crowded when a city expands, people have chosen to relocate to areas farther away from the downtown region, such as Scarborough, near Lake Ontario (see Map 1).Today, waterfront areas in Scarborough, and all along the Toronto coastline, are suffering from coastal erosion. The Toronto beaches are in the southeastern portion of the city. The prominent feature of the area is known as the Scarborough Bluffs, which is a long series of cliffs extending along the length of the city adjacent to the water.In recent years, erosion along the Bluffs has been rampant. Some homeowners have lost more than 30 meters of property over the last decade, putting their homes at risk In fact, some fences which were far away from the waterfront just ten or fifteen years ago are now hanging off the edge of the cliffs, on the verge of falling into the water. These homes are in grave danger of being swept into the Lake.It is in the light of all these problems facing the city of Toronto that it was decided to conduct a study to determine which areas of the Toronto coastline are at the greatest risk of erosion by measuring cliff heights and angles. This will give a good impression of the area's risk for coastal erosion in accordance with W. Davis' 1889 theory of coastal classification. His theory is explained more in-depth in later parts of the study, but in essence, it said that steeper slopes are newer and are at greater risk of being eroded in the future and that more gently sloping land areas have already been eroded considerably, and are therefore not at as much risk as steeper slopes.Map 1 - Study AreaStudy AreaAs per the map on the previous page, the study is to be conducted...

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