A flash flood is a rapid flooding of geomorphic low-lying areas - washes‚ rivers‚ dry lakes and basins. It may be caused by heavy rain associated with a storm‚ hurricane‚ or tropical storm or melt water from ice or snow flowing over ice sheets or snowfields. Flash floods can also occur after the collapse of a natural ice or debris dam‚ or a human structure such as a man-made dam‚ as occurred before the Johnstown Flood of 1889. Flash floods are distinguished from a regular flood by a timescale less
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When floods develop‚ the places in which they do so are called water sheds. These water sheds can be either man made or they can be natural. A watershed is defined as an area that is between a land mass and a water source. A watershed can be a lake or a river. If this particular watershed is working appropriately‚ then the water should be drained into the ground naturally. However‚ if there is too much snowfall or rainfall‚ then the watershed cannot hold so much water and this results in overflowing
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Mother Nature Recent floods in the Sun City are an excellent example of "fooling with Mother Nature." Arroyos are creek beds that are usually dry and covered with plants and trees; they also attract wildlife in search of food and shelter. Arroyos are nature’s way of providing natural barriers that can prevent flooding by providing channels for water to drain away from populations. The storm that escalated on August 1‚ 2006‚ serves as a warning to local politicians and developers who want to develop
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to elaborate on causes and consequences of floods. There are always floods somewhere in the world. They threat big communities with millions of people‚ their lives and properties. Big floods always draw international attention. In order to support my discussion about floods with concrete examples‚ I will talk about causes and consequences of flood using Mississippi River basin. The flood plain A river’s flood plain is central to any discussion of floods. A broad‚ nearly flat landform consisting
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how much damage rain and water can do. While our city has tried many different options such as sand bags. Built 3 reservoirs‚ and stopped building new houses in flood zones it just seems like none of them work. The problem is that Findlay is getting more rain than the Blanchard River can hold water‚ which is making the city of Findlay flood. In my opinion we have a couple of choices of ways to get around ruining our homes and lives‚ which would be corralling the rain to different location‚ creating
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Edward Mai #22 01/21/05 HALO:The Flood By William C. Dietz Today I am going to tell you about a great book I read lately. It is called HALO:The Flood. The Flood is based on the award-winning Xbox game‚ Halo. This book was interesting because it tells the story through several different perspectives. Some of the perspectives include: the super-soldier‚ Master Chief‚ an alien‚ another alien‚ a sergeant‚ and a few soldiers. Although some new character perspectives are introduced
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The Negative Flood Effects The negative impact of floods is very uncontrollable. During a long period of dry weather‚ it suddenly begins to rain. Rainfall refills the water that supplies and provides a drink for every living thing. It also helps with drought and washes pollutants from the atmosphere. However‚ streams and rivers can’t handle the heavy rain so water overflows and produces a flood. As a result‚ they caused economic losses‚ damage in urban and rural communities and damage the environment
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Tropical Cyclones & Floods & Droughts: Australia is well known for it’s natural disasters including BushFires‚ Floods‚ Droughts and Tropical Cyclones. The major disasters being Tropical Cyclones and Droughts. A cyclone is a large-scale‚ atmospheric wind and pressure system characterized by low pressure at it’s centre and by circulating motion‚ counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. An example of a tropical cyclone is Australia’s deadliest one yet
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The Johnstown Flood The Johnstown flood is tragic story. Almost a myth these days‚ thousands of lives were lost only hundreds saved. David McCullough artfully tells the story of the dam that broke‚ because of ignorance and neglect‚ and the individual lives that it affected‚ he crafts together the facts of the disaster with the emotion making you see and feel the pain and hurt. When the huge dam broke and hundreds of thousands of gallons of water went rushing down into the valley there was nothing
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Katrina Evacuation Influences i Hurricane Katrina Evacuations Risk Communication Influences: Inconsistent and Confusing Messages‚ Lack of Trust in Information Sources‚ Selective Reporting by Media and Psychological and Social Factors February 25‚ 2009 Risk Communications EDMG612 B002 Win 09 Dr. Erich W. Randall Katrina Evacuation Influences ii Table of Contents
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