Groynes


	Groynes
	Advantages Helps build beaches (encourages tourism) Stops longshore drift (and consequently erosion) Wider beaches absorb wave energy more	Disadvantages Starve areas further down the beach of sediment Don't fully stop longshore drift (sand overflows) Spoils natural look of the beach Creates uneven beaches Can't swim near them Limits access to beach Can use wood from unsustainable sources Expensive (£200,000+)
	Evaluation Wooden or rock structures built perpendicular to the seaStops longshore drift

Wooden or rock structures built perpendicular to the seaStops longshore drift

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