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  • 27 40 Percent Of The Cities Water
    624 words
    Water Problem and its implications on Mexico City In what was once lake Texcoco now stands the 3rd most populous city in the world. 'Ciudad de los Palacios' ('City of Palaces'), or as we know it Mexico City, is home to more then 20 million (2003) people and serves as the governing capital of Mexico. Like many other metropolis D.F. (as known by the Mexican people) post enormous water sanitation and distribution problems. Ironically enough, the waters once known as lake Texcoco, in which the city ...
  • Need For Water
    1,157 words
    Middle East Water Shortage Due to geography and population growth, the Middle East nations are faced with a growing demand for a shrinking water supply. Throughout most of the Middle East region rainfall is irregular and the rainy season is very short. The World Bank reports that this area (including North Africa) has 5% of the world's population, but only 1% of the world's water. Droughts have been occurring more frequently and lasting longer, warning of a bleaker future. Man himself has not he...
  • Water Productivity In Irrigation
    1,402 words
    Emerging Water Shortages Threaten Food Supplies, Regional Peace Spreading water shortages threaten to reduce the global food supply by more than 10 percent. Left unaddressed, these shortages could lead to hunger, civil unrest, and even wars over water, reports a new book from the Worldwatch Institute. Irrigation accounts for two thirds of global water use, but less than half that water reaches the roots of plants. 'Without increasing water productivity in irrigation, major food-producing regions...
  • Productive Irrigation Lands
    305 words
    Soil Salinity Salinity in both the rivers and on the land is one of the main and most costly results of over clearing and irrigation. Salinity is caused by changes in the delicate balance between surface water and groundwater systems. A small increase in the infiltration of water from the topsoil to the groundwater, due to rainfall or irrigation, can result in a dramatic rise in groundwater pressure and water table levels. The trees of the open forests are now replaced by shallow-rooted crops an...
  • Water The Soil
    352 words
    What is it? Waterlogging is the lower in land productivity through the rise in groundwater close to the soil surface, and also where the water table rises above the surface. The raised water table results in the soils becoming waterlogged and air spaces in the soil are filled with water, and plant roots, in effect, suffocate from the lack of oxygen, limiting plant growth in those areas. Where does it occur? Water logging occurs where bad irrigation methods are used and in poorly drained soils wh...
  • Water From The Ogallala Aquifer
    1,820 words
    Long ago, the middle of the North American continent was a treeless prairie covered by tall grasses and roaming buffalo. When European settlers came, they called this area the Great American Desert. Today, this 'desert' is covered with fields of wheat, corn, and alfalfa made possible by center-pivot irrigation. My grandfather used to sell center-pivot systems and when my family drove to my grandparent's home in Nebraska, we would count how many 'sprinklers' were watering each section of land. At...
  • Klamath Water Crisis
    2,757 words
    the paper is about the water crisis that is taking place right now in the Klamath Falls are of Oregon. It discusses the many problems that the different groups of interest are dealing with. The main group that I focused on was the view point of the farmers. The Klamath Lake, along with other various rivers, lakes and canals that surround it, are the basis for almost 500 species of wildlife in southern Oregon and parts of northern California. It also serves as the most important factor in a farme...

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