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Tidal power :fountain: - Coggle Diagram

- - - - Tidal range is greater
    - - Smaller tidal range
- - - - All water flowing in and out of the lake
        
        Flows over turbine
        
        Lake (created behind the barrier
  - - - Most environmentally sensitive areas can be avoided
    - - water can be pumped into a lagoon producing a water level higher than sea level
  - - - Environmental impacts are very low
      - Do not have significant impact on tidal flow
- - - - Estuaries
      - Headlands
      - Concentrate the flow and increase the velocity
- - - - more opportunities to avoid impacts on most sensitive features
    - - Allowing migratory species through
  - - - the large size requires large quantities of materials
      - Sand, gravel, rock, cement, tarmac
      - Have impacts during:
        
        Extraction
        
        Processing
        
        Transport
        
        Installation
    - - barrage reduced the ease with which the water can flow in or out
      - low tide level is never as low as the high tide is never as high
    - - Water flow in and out the lagoon behind the barrage
        
        Only possible through turbine channels
      - Areas of very fast flow -sediments are eroded and carried away
      - Areas of slower flow - sediments are deposited and build up
      - Extended periods of static water at high/low tide will allow sediments to settle - general turbidity will be lower
      - Allow light to penetrate to deeper water
        
        Increasing temps
        
        Allowing more photosynthetic organisms to survive
    - - pollutants from human activity around the lagoon or in catchment areas build up in the lagoon
  - - - Do not have the impacts of barrages/lagoons
    - - May affect marine animals
        
        Dolphins
        
        Whales
    - - Installation of a large number over a large area could have a larger affects than barrages/lagoons
- - - - Crosses an estuary
      - Not as tall