Costal management strategies 4.2

Importance of Costal management

• It’s essential to build resilience in coastal communities

• Climate change, sea level change is increasing rates of coastal erosion

• So they need to be adapted to

What is hard engineering

• aims to stop physical processes altogether or alter them to protect the coast

Cost benefit analysis of hard engineering

• To decide which engineering is most appropriate for an area, cost benefit analysis is done

• Some areas are left with no protection as costs outright the benefits.

What are Groynes

• Rock structure built at right ankle to coast

• They trap sediment, moved by longshore drift to build up a beach

Advantages of Groynes

• Built up beaches increases tourism and protects land.

• Works with natural processes to build up the beach

• Not too expensive

Disadvantage of Groynes

• They starve beach further along coast of fresh sediment as they interrupt longshore drift, causing erosion elsewhere.

• They’re unnatural and unattractive