The Advantages and Disadvanages of Hard and Soft Engineering to Manage Flooding

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  • Created on: 31-05-10 08:12
Preview of The Advantages and Disadvanages of Hard and Soft Engineering to Manage Flooding

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Management Evaluation
Groups for
Techniques Advantages Disadvantages Groups against
Hard Engineering
Multi-purpose- HEP,
Land flooded when Leisure users
Dams and non-polluting
created, (may destroy Councils, (extra Environmentalists
reservoirs Floodwater caught by
farmland, need to income, HEP)
dam, prevents
relocate people)
flooding downstream
Very expensive
Greatly reduces the Those living
People who own land
flood risk- diverts downstream where
Flood relief channel affected by the
water away from May encourage a false the flood risk is
main channel sense of security decreased
Industry benefits from Environmentalists:
Straightening the Needs to be
Relatively cheap reduced transport damages channel and
course maintained
costs bank ecosystems
Those living
Need maintenance.
Strengthening Existing land uses can downstream where
Not sustainable in the Existing land users
levées be maintained the flood risk is
long term
Requires international
Those living
co-operation. Land Those people affected
Flood retention Store water at times downstream where
use restricted to by the occasional
basins of flood risk the flood risk is
recreational, pasture flooding e.g. hunters
or forestry
People with businesses
located on the
May create a false People who can floodplain where
Flood proofing Reduces damage
sense of security remain at their site damage cannot be
reduced e.g. market
Soft Engineering
Increased interception
Farmers who have to
delays runoff reducing Forests generate little
Afforestation Conservationists convert their land to
the amount of water income
reaching the river
Low cost for
undeveloped areas of Existing floodplain Conservationists Local council, since the
Floodplain land use floodplain. damages are not zoned land generates
zoning Some industrial land reduced. Industry may few jobs or tax
Leisure users
users require a locate elsewhere income
floodplain location
Requires co-operation
Based on the idea that
among the authorities
a change in one part Conservationists:
in the areas through
of the river system flood prevention and Farmers who lose their
Room for the river which the river and its
will cause knock-on conservation given land
tributaries flow. Very
effects downstream. equal consideration
expensive. Slow to
take effect


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