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Freshwater - Coggle Diagram

- - - - Reservoirs
        
        Reservoirs are built, due to the amount of water in a river, which varies over time.
      - Dams
        
        A dam, is a structure, which is built across a river or steam, in order to hold water back. Dams can be used, in order to generate electricity, store water, and control flooding.
    - - Dams
        
        For a dam to produce electricity, water is released through the dam, causing a turbine is spun, connected to a generator, which produces electricity.
      - Reservoirs
        
        A reservoir is a manmade lake which is created when a dam is built on a river.
        A reservoir is when river water backs up behind the dam.
    - - Dams
        
        If too much sediment, the natural balance of the river downstream, could be changed. This would affect: plants, people, and wildlife.
      - Reservoirs
        
        Reservoirs cause impacts on the surrounding environment. . Major effects caused by reservoirs include: sedimentation, climate changes, erosion, human migration, interferences with ecosystems, and diseases spread among humans.
  - - - A disadvantage of water transfer schemes, is that the dams and bridges which are used to transport water (that are needed), are expensive to build. Also building dams could have negative environmental impacts.
        Moving large quantities of water, can interrupt river systems, and it can disturb fish spawning, and migration patterns.
    - - When a country has water surplus in an area, and a water shortage in another area, supplies are able to be transferred.