Flood control and urban water way management are an essential part of urban planning and a quality of life issue for many residents living in flood plain areas. Flood control management issues are of great concern to businesses and individuals located in an area because a flood can bring economic activity and ordinary life to a halt in a few hours of intense rain events. Some residents are affected by floods more than others and it can have regional impacts based on the geomorphology of the areas affected. For example, one area of a city may not be as affected as greatly by flooding because that location could be in a 100 year flood plain zone and this means that a major flood event will only occur in that area about once every 100 years. Likewise, other areas of a city could be in a 10 year or 5 year flood plain zone and are at a greater risk of experiencing floods of higher magnitudes and frequency. These areas that are frequently prone to flooding are especially important for the regional flood control plan; however all regions, regardless of the flood risks, could be potentially affected by the political considerations when designing a water way management plan.
Neighborhoods that are adjacent to water ways but only experience sporadic flooding events could be located in a hydrological region which is advantageous for preemptive flood control management. City planners have a variety of options for controlling urban water ways and each option has advantages and disadvantages. One major consideration will be cost of the water management project verses the perceived benefits of decreased flooding events. Flood control projects need to consider the neighborhoods affected and the total costs incurred by the municipality and the in...
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...Without the natural vegetation which naturally slows the speed of moving water these concrete dry creek beds could actually be causing more flooding events in low lying areas of the city while quickly removing the water from other areas (Guo, 2001). Flow retardation structures have also been constructed to limit the untoward downstream effects of urban runoff and increased flow rates, these structures may settle out the particulate pollution contained in the storm runoff (Williams & Wise, 2006; Ferguson, 1998). Detention basins are small impoundments of water with a capacity of no more than 10 acre feet and it has at least one outlet and an emergency spillway because multiple outlets allow for more control of the storm water runoff. The major difference of a detention basin from a retention basin is that they are larger and release the stored water at a slower rate.
Floods can be a very dangerous natural disaster because a flood has the power to move cars, buildings, and cause massive damage to life and property. Even the small floods that are only 30 centimetres or so can do massive damage to houses and if the
New Orleans, Louisiana lies at the second lowest elevation among major cities in the United States. It is a city surrounded by water, making it almost like an island. To counter this dangerous combination of the low elevation along with the lakes, rivers and swamps surrounding it, the Army Corps of Engineers built a series of levees around the city to foster its protection. It is these very same levees however that might doom the city should a Category 3 hurricane ever hit. Our statistical analyses examined the current belief that there is a 39% probability that New Orleans will be hit by a major hurricane and based on the resulting Z-score, rejected that belief. We did find however that the probability, while not 39%, was still in the 30th percentile range, which should still be a major cause for concern among the leaders and residences of the city of New Orleans.
A major flood on any river is both a long-term and a short-term event, particularly any river basin where human influence has exerted "control" over the ri...
The Midwestern United States has experienced flooding for a long time now, but recently the annual precipitation has been far greater than before. Precipitation has increased 37 percent since 1958 (Jeff Spross). However a few major floods have been recorded dating back to 1913. In 1913 torrential rainfall hit Indiana and Ohio. The ground was greatly damaged from the flood causing difficult agricultural years for many years after the flood. Another flood hit a large portion of the Midwest region including the eastern Dakotas, Wisconsin, Kansas, and Indiana in 1993. Recovery costs for the Great Flood exceeded $4.2 billion. Like the flood in 1913 agriculture was affected for many years hurting the economy of the Midwest. A more recent disastrous flood hit mainly Iowa in 2008. After the flood in 2008 agriculture again took a hard hit and since the government ...
In the chapter the “Rainy River” of the novel The Things They Carried by Tim O’Brien, O’Brien conveys a deep moral conflict between fleeing the war to go to Canada versus staying and fighting in a war that he does not support. O’Brien is an educated man, a full time law student at Harvard and a liberal person who sees war as a pointless activity for dimwitted, war hungry men. His status makes him naive to the fact that he will be drafted into the war and thus when he receives his draft notice, he is shocked. Furthermore, his anti-war sentiments are thoroughly projected, and he unravels into a moral dilemma between finding freedom in Canada or standing his ground and fighting. An image of a rainy river marking the border between Minnesota and Canada is representative of this chapter because it reflects O’Brien’s moral division between finding freedom in Canada or standing his ground and fighting in the Vietnam war.
manmade levees, dikes, and other flood control measures, is a case in point. In a
By August 28, evacuations were underway across the region. That day, the National Weather Service predicted that after the storm hit, “most of the [Gulf Coast] area will be uninhabitable for weeks…perhaps longer.” New Orleans was at particular risk. Though about half the city actually lies above sea level, its average elevation is about six feet below sea level–and it is completely surrounded by water. Over the course of the 20th century, the Army Corps of Engineers had built a system of levees and seawalls to keep the city from flooding. The levees along the Mississippi River were strong and sturdy, but the ones built to hold back Lake Pontchartrain, Lake Borgne and the waterlogged swamps and marshes to the city’s east and west were much less reliable. Even before the storm, officials worried that those levees, jerry-built atop sandy, porous, erodible soil, might not withstand a massive storm surge. Neighborhoods that sat below sea level, many of which housed the city’s poorest and most vulnerable people, were at great risk of
Cities in Texas are especially vulnerable to the effects of climate change. Depending on where they are located, cities vary in their vulnerability and most major cities face a decline in water resources. Coastal cities, such as from Houston to the Rio Grande, are exposed to a rise in sea level. The decline of fresh water reservoirs and the rising sea level ...
The Colorado River is formed by small streams created by a huge amount of snowmelt from the Rocky Mountains. The ecology and flow of the river varies highly by region. The river is divided into two different regions, the Upper Basin and the Lower Basin. Beginning in the early 1900s, western states began to build dams in the Colorado river, diverting the water flow to fast growing cities like Los Angeles, San Diego, and Phoenix. The river now services over 30 million in the southwestern parts of the United States and Mexico (Patrick 1). Diverting the water of the nation’s seventh-longest river may be seen has a great accomplishment, however to others this is a great crime against nature. Over the past couple years the river has been running significantly low, since a drought has come up the southwest. At the lakes edge, “bathtub rings”, lines in the rock walls, can be seen showing the decrease in water level. It is recorded in some areas of the river that the water has lowered 130 feet since 2000. Some water resource officials say those areas will never be filled back to normal. The surrounding states must adjust to living with less water or further actions need to be taken to save the river’s water. There has been some talk about adding water to the river to replenish the river but nothing has hap...
Ubilla, Javier, Tarek Abdoun, Inthuorn Sasanakul, Michael Sharp, Scott Steedman, Wipawi Vanadit-Ellis, and Thomas Zimmie. "New Orleans Levee System Performance during Hurricane Katrina: London Avenue and Orleans Canal South." Geotechnical & Geoenvironmental Engineering (2008): n. pag. Academic Search Premier. Web. 12 Dec. 2013.
One of the largest geographic physical structures in the United States is the Colorado River. Human activity and its interaction with this great river have an interesting history. The resources provided by the river have been used by humans, and caused conflict for human populations as well. One of these conflicts is water distribution, and the effects drought conditions have played in this distribution throughout the southwestern region. Major cities such as Las Vegas, Los Angeles, San Diego, and other communities in the southwest depend on the river. It provides water for over 20 million people, irrigation for 2 million acres of land, four thousand megawatts of hydroelectric energy, and over twenty million annual visitors for recreation purposes. Also, once in Mexico, the river provides water to irrigate half a million acres of farmland, and municipal and industrial water for 2 million people living in this delta region. The river distributes its flow from lakes and canals along its journey as well. Due to climate change, human demand, natural forces like evaporation and human-induced climate change this water supply is in conflict. Also, a recent change that began in March of 2014 will bring a temporary water surge to the delta of the Colorado River for the first time in many years to help restore this region, and it’s possible it could reach the Sea of Cortez once again.
Water purification and a wastewater treatment plants would be necessary in order to provide the citizens and visitors with clean healthy water. To prevent flooding, this city was built on flood plains.
These facilities are: impounded, diversion, and pumped storage. Some of these facilities use dams and some don’t.
A tropical cyclone is a warm-core, low-pressure system producing high winds that spiral counter-clockwise (in the northern hemisphere) and inward, with the highest winds near the center of circulation. The large counter-clockwise and inward flow is characteristic of the nearly symmetric structure of tropical cyclones as they are comprised of rain bands spiraling toward the center. These warm-core storms typically form over the tropical and subtropical oceans and extract their energy from the heat content of the oceans.
Water is essential for humanity’s survival, and even though the world is largely covered by water, only a small percentage is only usable for human consumption. Approximately, on average, 120,000 gallons of water are used annually for a single-family household (Galbraith). This alarming number could be reduced dramatically for the efforts of water conserving and lower water bill prices for families and subsequently saving money that could be used for other expenses. Thus, conserving water would prove beneficial and advantageous to not just Texas, but for everyone else as well. Although environmental policies have been not as popular with Congress and the state legislature, it is still an important problem to consider since there are only a limited amount of resources for public use, such as water.