The basin of the colorado river is the most heavily used source of irrigation water in the USA.

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  • Case Study- Geopolitics with the USA: The Colorado River
    • Background
      • The basin of the colorado river is the most heavily used source of irrigation water in the USA.
      • Original water rights were allocated in 1933.
      • Since then a series of treaties between the 7 US Stated with water rights and between Mexico have been signed.
      • A series of dams has been built to serve the water needs to 30 million people
    • Agreements
      • 1920s 'Law of the River'= divided the water between upper basin states or Coloardo, Wyoming, Utah and New Mexico and their responsibility to supply the lower basin states
      • California was given highest proportion of water due to its large population and political power. (Around this time was a period of higher rainfall and water surpluses

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