...do River. Bob Ribokas - On-Line Photography Portfolio (BobsPixels.com). Retrieved July 2, 2010, from http://www.bobspixels.com/kaibab.org/misc/gc_coriv.htm
The one feature common to the Hoover Dam, The Mississippi river and the three gorges dam is that they all tried to control nature’s swings, specifically in the form of flooding. Before the Hoover dam was built, the Colorado river “used to flood spectacularly…but after 1900 the Colorado provoked a vehement response” (Pg 177). The response was simple, but large. The U.S. built several large dams, including the Hoover dam, on the Colorado to decrease its flooding and increase power and irrigation. Unfortunately, just as human control of the Colorado’s flooding increased, its organisms and habitats were detrimentally influenced, and the water became more and more salinated.
The negative aspects of Glen Canyon Dam greatly exceed the positive aspects. The dam’s hydroelectric power supply is only three percent of the total power used by the six states that are served by the facility. There is a surplus of power on the Colorado Plateau and with more and more power-plants being created in the western hemisphere, Glen Canyon Dam’s power is not needed (Living Rivers: What about the hydroelectric loss). Although the ‘lake’ contains twenty seven million acre feet of water, one and a half million acre feet of water are lost yearly due to evaporation and seepage into the sandstone banks surrounding the ‘lake’ (Living Rivers: What about the water supply?). The loss of that much “water represents millions, even billions of dollars” (Farmer 183). If the government were to employ more water efficient irrigation practices, as much as five million acre feet of water per year could be saved.
Since the beginning of time, water has played a key role in societies all over the world. The earliest recorded civilizations have all been found along large river valleys, such as, the Indus River in India and the Yellow River in China. Water is an essential part of life; it does not just sustain the life of all human beings around the globe, but also sustains the life of every living thing known to this Earth. All of the major cities that we know today are surrounded by large river systems that supply its people with the means to survive in that region. These rivers also link our different communities together and allow us to prosper, but these rivers are being taken advantage of. Our once great rivers are falling victim to pollution and neglect from its citizens. To counter this problem, renewal projects for our rivers are happening all over the world and will not just improve the benefit of life for its consumers, but will bring people back to the root of all societies that is the river. The Trinity River, a river that connects three major cities within Texas, is undergoing such a restoration project that will improve the quality of life for all citizens along its path.
The draining of riverine wetlands and the construction of levees had altered the river system over the previous century.
Simonds, William Joe. "The Boulder Canyon Project: Hoover Dam." Bureau of Reclamation History Program. Bureau of Reclamation, U.S. Department of the Interior. .
1999. “Rethinking Dams”. Copyright 1999 The New York Times Company, The New York Times. Section A; p.16.; Column 1; Editorial Desk. July 6, 1999.
2.) Design engineers proposed a plan to dam the natural stream Old River and build two control structures, one to operate at all times and stages, and the other to operate only during floods. A lock to preserve navigation between the Mississippi River and the Atchafalaya-Red River system was also included.
The primary purpose of Friend dam is to help regulate the flow of San Joaquin into available uses of its environmental, wildlife, and farmer’s impacts. The dam controls the flow of water delivery where it needs authorization first before the schedule can release any delivery waters into canals, steam, and wild life habitats. There will be agreements and many protocols to do with it first to avoid unnecessary spilling. There are 5 release schedules which include quantity of water available, time water, flood control requirements, release schedules from storage reservoir above Millerton Lake, and water user requirements. These benefits of flood control, storage management, modification into Madera and Friant-Kern Canals, to stop salty water from abolishing thousands of lands in Sacramento and throughout San Joaquin Delta, as well as deliver masses of water into agricultural lands in 5other counties in the San Joaquin Valley.
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...