How Have Human Activities, some of which may be Conflicting,
There are many reasons why a country would decide to change or manipulate a river. As every country is unique there are rarely occasion where two or more countries have used the same reason to change their river. However the status, possible economic, limits and dictates how many choices the country has. Generally MEDC'S have more options and techniques available to change the river, because they are not restrained by large debts. However both MEDCs and LEDCs encounter their own individual problem, which affects the river and its environment.An example of an MEDC river management is the Mississippi River. And in 1993 a large flood in the basin of the Mississippi River caused great economic and environmental problems. Conflict arose as environmental groups said that trying to manage the river only makes it worse and that the damage caused by flooding would not have been so serve had minimal river management occurred. However the groups managing the river said the irregular weather patterns caused the floods. The management of the river started decades ago as America was a NIC it used the river to enhance its economic position as well as attempting to create a better living standards as the soil near the river was very fertile a
The flood meant that waste products in the river were released onto the fertile soil also towns created along the river were flooding leaving thousands of people without homes. Human made levees, such as we see on the Mississippi River along much of its length, are much higher and are constructed to prevent flooding from high discharges on the River. In the absence of this barrier, many red Sea species have invaded the Mediterranean. Most reservoirs are currently deep enough to avoid this problem but as they silt in, the problem can be expected to intensify. Passage over spillways or through high velocity orifices injures and disorients down-migrating juveniles while blockage by the dam tends to retard and concentrate upstream migrating predators. Therefore, a higher discharge can be accommodated before 'bank full' discharge is reached. Farming is also another example as farmers and industry compete for precious fertile soil without any regeneration programs. The advantages of this are that economic activity on the adjoining floodplain, which is what the government wanted. The USACE also used channelisation to modify the route of the river. Unfortunately this dam has caused a big change to the life's of farmers downstream from the dam. The river is the nucleus of Egypt as 80% of it is desert. The USACE straightened the river and reinforced the riverbed so that the river thalweg was faster, causing ships journey time to decrease. The dam also means that N2 concentrations are increased by the high velocity impact of water against turbines. And water rising behind levees, which then broke with greater venom.
Common topics in this essay:
Mississippi River,
Lake Nasser,
America NIC,
River Nile,
Columbia River,
,
Diversion Dam,
Dam Lake,
MEDCs LEDCs,
mississippi river,
Previously Nile,
river nile,
river level,
river management,
lake nasser,
fertile soil,
near river,
dams fish ladders,
fish ladders,
dams fish,
fishing industry,
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Acceptance Essays
