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International ConferenceADAPT to CLIMATE

Nicosia, Cyprus, 27-28 March 2014

FLOOD BARRIERS -AN ADAPTATION MEASURE TO

CLIMATE CHANGE

Toumazis A.D.Dion. Toumazis & Associates

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OUTLINE

Flood Hazard– Precipitation (inland)– Waves (coastal)

Flood Risk– Water Management - Drainage Systems/ Protection– Relocate (Away)– Raise (Higher)– Living with floods

Adapt to Flooding– Flood Barrier Technology

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FLOOD HAZARD - PRECIPITATION

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Wave Run-up exceeds Crest LevelWave Overtopping

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FLOOD HAZARD – COASTAL FLOODING

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Wave Overtopping Factors

- Sea Level- Extreme Wave Conditions

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WATER MANAGEMENT RAINWATER HARVESTING

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SUDS

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WATER MANAGEMENT SUSTAINABLE URBAN DRAINAGE SUSTEMS

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WATER MANAGEMENT CITY DRAINAGE SYSTEMS

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CITY DRAINAGE SYSTEMS

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Location Design Storm frequencya

Return period (1 in “n” years)

Rural Areas 1 in 1

Residential Areas 1 in 2

City centres/ industrial/

commercial areas

1 in 5

Underground railway/

underpasses

1 in 10

a For these design storms no surcharge shall occur

Recommended design frequencies for use with simple design methods

EN 752 Drain and Sewer systems outside buildings

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LIVING WITH FLOODS

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SEA LEVEL RISE – ISLAND RISE

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LIVING WITH FLOODS (City Level)

LondonThames Barrier

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LIVING WITH FLOODS

VeniceMoses

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LIVING WITH FLOODS (Property Level)

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Demountable opening flood barrier

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Self Closing Flood Barrier (SCFB)TM Passive Flood Barrier Floodbreak ®

Self Operating Flip Up Barrier - Aquafragma

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ADAPT

Engineering solutions for a safer and better environment

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CONCLUSIONS

Flooding: was, is and will always be a Certainty

Climate Change will cause more frequent and more severe flooding

Implement Good Storm Water Management• Collect and reuse water at source (rain water harvesting)• Delay and reduce surface water run-off (SUDS)• Collect and transport run-off (predict / derive flow rate)• Prepare for living with floods

Technology is available Flood Barriers is a promising adaptation measure

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