icon techniquesAdapting to climate change requires the implementation of several complementary measures on the same territory to ensure the safety of both the public and infrastructures. There are a host of strategies and measures that can be applied to deal with coastal risks. However, it is important to ensure that the chosen measures are appropriate for the community and the site concerned.

At the community scale, adopted measures must include both planning and regulatory measures along with protection, accommodation and restoration techniques.

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The concept of using complementary measures to limit risks during storm surges

Examples of engineering tools appear hereunder. Download the files to find out more…


The tools presented are those described in the guides produced by the Atlantic Climate Adaptation Solutions Association (ACASA).


Erosion

Retreat

Relocate infrastructure

The decision to relocate or abandon a coastal road, building or other type of infrastructure must be based on a complex cost-benefit analysis that includes socio-economic aspects. The value of services provided must be accounted for.

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Accommodation

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

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Protection

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

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Dune building

Dunes act as a flexible buffer between the ocean and the upland, protecting from both erosion and flooding.

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Living shoreline/wetland

Saltmarshes are a way to maintain a natural shoreline balance as sea levels rise; reducing impacts of flooding and erosion reduced. It can be combined with low-crested reef breakwaters in front.

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Artificial dune/buried revetment

A buried revetment uses the hard protection of a revetment and the soft protection of a dune to create a barrier against flooding and erosion.

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Seawall

Seawalls are structural barriers designed to resist the full force of waves and storm surge.

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Plant stabilization

Planting certain vegetation to stabilize coastline is a cost effective option in relatively protected shorelines.

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Beach nourishment

Beach Nourishment adds sediment to the coastal system by depositing along the shoreline. It acts as a storm buffer. It involves periodic renourishment because it does not reduce background erosion rate.

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Perched beach (sill)

A perched beach can be created where the natural profile of a beach comes too close to valuable infrastructure or property.

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Artificial reefs

Artificial reefs attempt to mimic natural forms and use naturally occurring material and help restore natural reef systems.

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Retaining wall

Retaining walls prevents land from sliding into the sea. The secondary purpose is to limit the impact of waves on the shore.

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Nearshore breakwaters

Nearshore breakwaters are designed to provide shelter from waves to reduce erosion of the shoreline and can be designed to increase sediment build-up in desired locations.

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Shore perpendicular breakwater

Shore-perpendicular breakwaters extend out from the shore. They provide shelter from waves to the shoreline and can be designed to increase sediment build-up in desired locations.

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Groynes

Groynes/Groins trap sand moving along the shoreline (littoral drift) and help grow the beach on the updrift of the groyne.

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Rip-rap armouring

Rip-rap refers to loose rock or other material piled on the shoreline to limit erosion, typically end-dumped from a truck.

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Engineered revetment

Revetments breaks wave energy, stopping erosion. Water can seep through.

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Scour protection

Scour protection prevents erosion (i.e. scouring) from around the base of infrastructure of natural coast.

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Flooding

Retreat

Relocate infrastructure

The decision to relocate or abandon a coastal road, building or other type of infrastructure must be based on a complex cost-benefit analysis that includes socio-economic aspects. The value of services provided must be accounted for.

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Accommodation

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

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Floating building

Floating buildings are located on a floating base allowing water to flow underneath during flood situations.

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Raised infrastructures

A building's elevation can be increased through the use of stilts or raised foundation to create non-living space under the house (i.e. garage) or by increasing the height of the land with fill before the building is constructed.

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Wet flood proofing building

Wet flood proofing accommodates the possibility of flooding into the structure. This technique allows water to flow in and out of the lower level of the buildings.

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Stormwater management

Storm water management reduces runoff by promoting infiltration naturally and with man-made pipes and streams.

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Raingarden/constructed wetland

A rain garden is a planted depression or a hole that allows rainwater runoff from impervious urban areas, like roofs, driveways, walkways, parking lots, and compacted lawn areas, the opportunity to be absorbed.

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Detainment pond

Detainment ponds store excess water during extreme rainfall.

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Bluff drain

Pipes with holes along the length that allow water to seep in and provide a route for water to escape the soil and drain into the ocean without eroding the bluff. A bluff drain is also beneficial for reducing bluff erosion due to overland runoff.

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Dredging

Dredging is the act of digging up the bottom of a channel to remove sediment that has built up in an estuary or harbour mouth, keeping channels open for floodwater drainage.

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Drainage ditch

Drainage ditches are made up of a network of open trenches often connected by culverts. They will provide routes for water to drain from an area.

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Protection

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

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Dry flood proofing building

Material and structures used to prevent floodwater or storm surge from impacting the more valuable structures within.

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Tide barrier/aboiteau

Tidal or storm surge barriers are moveable barriers or gates that are closed to prevent flooding when extreme water levels or storm surges are forecast. Aboiteaux provide one-way freshwater drainage.

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Dyke

Dykes prevent the flooding of coastal lowlands during extreme high tides and storm events.

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Dune building

Dunes act as a flexible buffer between the ocean and the upland, protecting from both erosion and flooding.

Download

Living shoreline/wetland

Saltmarshes are a way to maintain a natural shoreline balance as sea levels rise; reducing impacts of flooding and erosion reduced. It can be combined with low-crested reef breakwaters in front.

Download

Artificial dune/buried revetment

A buried revetment uses the hard protection of a revetment and the soft protection of a dune to create a barrier against flooding and erosion.

Download

Seawall

Seawalls are structural barriers designed to resist the full force of waves and storm surge.

Download


Erosion and Flooding

Retreat

Relocate infrastructure

The decision to relocate or abandon a coastal road, building or other type of infrastructure must be based on a complex cost-benefit analysis that includes socio-economic aspects. The value of services provided must be accounted for.

Download

Accommodation

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

Download

Protection

Maintenance repair or replacement of existing structure

Some structures require maintenance over time. If there is a structure already present at your site which is causing or experiencing damage, there is the possibility of repairing or replacing it.

Download

Dune building

Dunes act as a flexible buffer between the ocean and the upland, protecting from both erosion and flooding.

Download

Living shoreline/wetland

Saltmarshes are a way to maintain a natural shoreline balance as sea levels rise; reducing impacts of flooding and erosion reduced. It can be combined with low-crested reef breakwaters in front.

Download

Artificial dune/buried revetment

A buried revetment uses the hard protection of a revetment and the soft protection of a dune to create a barrier against flooding and erosion.

Download

Seawall

Seawalls are structural barriers designed to resist the full force of waves and storm surge.

Download

Erosion and flooding
In the example above, see the evolution of coastal erosion in the Pigeon Hill area from 1944 to 2012. Move the arrows!

A rigorous process

Scenarios and risks

icon scenario
Gain better knowledge of damage risks and risks to human health posed by erosion and flooding.

Maps and zoning

icon cartes
Delineate areas at risk based on recommendations.

Priorities and potential strategies

icon priorites
Identify and prioritise elements at stake within risk areas.

Evaluation and strategy selection

icon evaluations
Conduct more extensive studies for some of the adaptation measures under consideration.

Implementation plans

icon plan
Define the details on when and how the actions will be taken and implemented.

Project progression

Follow the progress of the project in your community using the interactive map.

View the map

Possible solutions

Adapting to climate change requires the implementation of several complementary measures on the same territory to ensure the safety of both the public and infrastructures. Here are some possible solutions.