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Coastal Risk Reduction and Resilience


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Coastal Risk Reduction and Resilience: Using the Full Array of Measures

Table 3: Structural features at a glance.
 

GENERAL COASTAL RISK REDUCTION PERFORMANCE FACTORS:
STORM SURGE AND WAVE HEIGHT/PERIOD, WATER LEVEL

Picture of Levee Picture of Storm Surge Barrier Picture of Seawall Picture of Groin Picture for Breakwater

Levees

Storm Surge Barriers

Seawalls and
Revetments

Groins

Detached Breakwaters

Benefits/Processes

Surge and wave attenuation and/or dissipation

Reduced flooding

Reduced risk for vulnerable areas

Benefits/Processes

Surge and wave attenuation

Reduced salinity Intrusion

Benefits/Processes

Reduced flooding
Reduced wave overtopping

Shoreline stabilization behind structure

Benefits/Processes

Shoreline stabilization

Benefits/Processes

Shoreline stabilization behind structure

Wave attenuation

Performance Factors

Levee height, crest width, and slope

Wave height and
period

Water level

Performance Factors

Barrier height

Wave height

Wave period

Water level

Performance Factors

Wave height

Wave period

Water level

Scour protection

Performance Factors
Groin length, height, orientation, permeability, and spacing

Depth at seaward end

Wave height

Water level

Longshore transportation rates
and distribution

Performance Factors

Breakwater height and width


Breakwater permeability,
proximity to shoreline, orientation, and
spacing

Source: Coastal Risk Reduction and Resilience: Using the Full Array of Measures, page 7.

 

 

Reviewed 4 October 2017

 

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