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

The River as a Tidal Park

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