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6.1 Water Sources (Freshwater Use and Availability (Used unsustainably…

- - - - UNCONFINED: water seeps directly from the ground surface CONFINED: impermeable rock layer exists that prevents water from entering directly. Instead, water enters from other confined aquifers where the layer does not exist.
    - - Problems
        
        Sinkholes
        
        saltwater seep
        
        poverty
      - Solutions
        
        use water sustainably
        
        stop growing crops that require lots of water in dry environments
- - - - Hydroelectric power
      - Helps control floods
      - Provides a freshwater supply
    - - river loses water downstream and floods upstream
      - Not useful for long
      - causes sediment accumulation
      - Floods can destroy terrestrial habitats