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Managing the coastline (Soft engineering (Beach nourishment, Cliff…
Managing the coastline
Consequences to coastal communities
Economic
Costs include the loss of property
Social
Impacts on persons health
Environmental
Loss of coastal ecosystems
Dawlish Railway Line 2014
Cost economy around £1.2 billion
700 metres of track had to be replaced
Brixham fish market saw a £3 million reduction in sales
Only railway to link Plymouth to London
Impact on communities
Problems for civilians
Falling property values
Inability to sell their home
Loss of their major asset
Impacts of erosion
Loss of access to roads & paths
Loss of amenity value
Hard engineering
Groynes
Maintain size of the beach
Increased erosion down drift
Seawalls
Prevent high water levels
Most expensive defence
Revetments
Absorb wave energy
Access difficulties
Gabions
Flexible in terms of placement
Not very strong
Hard engineering at Lyme Regis
Benefits
Offer long term protection
A new promenade
Calmer conditions for boats
Lies on slipped land made from unstable clays
Old defences are in a fragile state
Tourism is the main source of income
Soft engineering
Beach nourishment
Cliff regrading
Cliff drainage
Managed retreat
Dune stabilisation
Sustainable coastal management
Managing natural resources
Creating alternative livelihoods
Educating communities
Monitoring coastal change
ICZM
Characteristics
Planning for the long term
Involving all stakeholders
Work with natural processes
Types of ICZM
No active intervention
Hold the line
Managed realignment
Advance the line
EIA
Impacts of water movement and sediment flow
Impacts on water quality
Possible changes to flora and fauna
Wider environmental impacts