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Rotterdam Climate ProofConnecting Climate Resilience
with opportunities
Arnoud Molenaar
Manager Rotterdam Climate Proof
www.rotterdamclimateinitiative.nl
Rotterdam Adaptation Strategy
Chantal Oudkerk Pool –
Head of Adaptation Planning (C40)
Connecting Water with Opportunities &
Connecting people
ROTTERDAM
2014
Maeslantkering: Storm Surge Barrier
City
Area : 320 km2
Population: 615.000
Nationalities: 176
Municipal Budget: 4,2 billion Euros
Sewer system: 3000 km
Port
Area: 105 km2 (50 km2 commercial sites)
Length of port area: 40 km
Direct employment: over 70,000 jobs
Goods throughput: over 400 million tonnes of goods per annum
Shipping: 33,000 sea-going + 110,000 inland vessels/yr
Rotterdam
2014
GEOGRAPHY: HEIGHT MAP
water: urban quality
CURRENT IMPACT EXTREME WEATHER
Excessive rain fallFlooding Noordereiland
Heat wavesCollapsing levee (drought)
EXTREME WEATHER EVENTS: UHI
Source: TU Delft, 2014
CC related challenges
Possible consequences of flooding:Inner dike and outer dike
Increasing number of problem locations concerning:Storm water, salination and drought , heat island effect
STRATEGY
RAS: OBJECTIVES
▪Protection from river and
sea
▪Minimal disruption from too
much or too little rainfall
▪Accessible and safe port
▪Community awareness
▪CCA leads to a more
attractive city
▪CCA strengthens economy
v
Strategy
▪Big & Small
▪Grey & Green
▪Protect & Embrace
▪Maximise piggybacking
to reduce costs and
nuisance
Perspectives
COMPACT CITY
MONETIZING THE BENEFITS
Societal Cost-benefit analysis showed:
▪ Measures with positive outcome
▪ Benefits for different parties
▪ Benefits take time: LT thinking
▪ Piggybacking is cheaper!
Actions
MULTIFUNCTIONAL SOLUTIONS
WATER STORAGE: PARKING GARAGE
Water square Benthemplein, just after a good shower
WATER SQUARE BENTHEMPLEIN
…TEMPORARY STORM WATER STORAGE
COMMUNITY INVOLVEMENT: GREEN ROOFS
ADAPTIVE BUILDINGS
Nature, Recreation and Water Safety
Mainstreaming
v
From stand-alone to standard procedure
Examples:
• Heat procedure for prioritised bridges
• Heat and drought in tree policy
• Elevation standards (uitgiftepeilen)
• Permeable pavement Rotterdam Standard
v
Analysis of municipal instruments
Programmes, plans & procedures:
• Operation & Maintenance (e.g. sewerage)
• Greening programmes
• Private investments (negotiations)
• Municipal plans (e.g. masterplans, zoning
plans)
• Regulations (e.g. building permits?)
• Conditions: standard designs
(‘moederbestek’).
>> focus on municipal activities:
large area + big influence = high impact
Monitoring
MONITORING OBJECTIVES
•Report progress to council and
citizens:
▪ Accountability (time and €)
▪ Communication > ↑ awareness &
support
•Learn and improve adaptation
efforts
MONITORING: 5 dimensions
- Risks (probability*consequence)
- Targets (how much is enough?)
- Effort (how many m2/m3 etc added?)
- Effect (of implemented measures)
- Speed (are we going fast enough?)
New developments & knowledge lead to new
risks/targets/effects and might require
adjustments in speed.
v
Kortom:
• Samenwerking is de sleutel in alle stappen
van het proces
• Inzicht in huidige impacts >> draagvlak
• Geen-spijtmaatregelen> leren & inspireren
• Toekomstige risico’s > slimme beslissingen
• Identificeer win-win maatregelen
• Borging bij alle partijen
• Monitor voortgang