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cicelym
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So I'm revising for the OCR geog SDME tomorrow, with the theme being rivers and coasts, and I was wondering why soft engineering river and coastal defences, rather than hard engineering defences, are usually more sustainable?
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Leviathan1741
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(Original post by cicelym)
So I'm revising for the OCR geog SDME tomorrow, with the theme being rivers and coasts, and I was wondering why soft engineering river and coastal defences, rather than hard engineering defences, are usually more sustainable?
Soft engineering is often cheaper than hard engineering, so it costs less to implement and maintain. Soft engineering methods also have less impact on the natural environment, because they are designed to integrate with it. For example, hard engineering methods such as groynes disrupt the natural process of longshore drift, reducing the amount of sediment which gets moved along the coast, starving areas further along the coast of sediment and increasing coastal erosion in those areas. Soft engineering methods, on the other hand, such as managed retreat, work with the natural environment and process, not against them, and eventually leads to the formation of wetlands and marshland.

In summary, soft engineering methods have less impact on the environment, and lower economic cost
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cicelym
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(Original post by Leviathan1741)
Soft engineering is often cheaper than hard engineering, so it costs less to implement and maintain. Soft engineering methods also have less impact on the natural environment, because they are designed to integrate with it. For example, hard engineering methods such as groynes disrupt the natural process of longshore drift, reducing the amount of sediment which gets moved along the coast, starving areas further along the coast of sediment and increasing coastal erosion in those areas. Soft engineering methods, on the other hand, such as managed retreat, work with the natural environment and process, not against them, and eventually leads to the formation of wetlands and marshland.

In summary, soft engineering methods have less impact on the environment, and lower economic cost

Surely soft engineering is a lot less socially sustainable though? But thanks
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Leviathan1741
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(Original post by cicelym)
Surely soft engineering is a lot less socially sustainable though? But thanks
I'm not sure, what do you mean by socially sustainable?
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