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Floods in Hamburg Klaus Kluge 28 September 2012, Riga
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Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

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Page 1: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Floods in Hamburg

Klaus Kluge

28 September 2012, Riga

Page 2: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Agenda

The agency of roads, bridges and waters (LSBG)

Facts about Hamburg

Protection against storm surges

Protection against precipitation runoff

Questions to science and policy

Page 3: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Landesbetrieb Straßen, Brücken und Gewässer - LSBG(Agency of roads, bridges and waters)

FOTO

: FO

TOLI

A

Inside the public administration of Hamburg, the Agency of roads, bridges and waters (LSBG) is a service provider for the implementation and maintenance of technical infrastructure.

The LSBG has about 550 employees.

The LSBG develops a business plan due to § 26 LHO and has an own work council.

The LSBG administrates about 200 Mio. € construction and operational resources in trust.

Mr. Hinz

GF Director

Mr. Heimböckel

B Divison of operation andmaintenance

Dr. Müller

G Divison of waters and flood protection

Mr. Krüger

K Division of bridges and engieering

Mr. Gerloff

S Division roads

Mr. Heel

A Division administration

Page 4: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Agenda

The agency of roads, bridges and waters (LSBG)

Facts about Hamburg

Protection against storm surges

Protection against precipitation runoff

Questions to science and policy

Page 5: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Living with water in Hamburg

Page 6: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Hamburg - Regional Facts

A city and a region1.75 Mio. inhabitants (metropolitan region 4.2 Mio)Size: 755 square kilometres 17% Parks, recreation areas and Forest8 % Waterbody

Page 7: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

& heavy rains

Natural hazards in Hamburg

2 flood related problems:

storm surges

Page 8: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Agenda

The agency of roads, bridges and waters (LSBG)

Facts about Hamburg

Protection against storm surges

Protection against precipitation runoff

Questions to science and policy

Page 9: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Storm surge on 03.12.1999Storm surge on 03.12.1999

956

1095

Hamburg at the Elbe River

110 km

Page 10: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Floods

16/17th February 1962•waterlevel NN + 5.70 m•61 crevasses•30 % of the city area flooded•315 death in Hamburg

3rd January 1976 •water level NN + 6.45 m•harbour area was flooded

• 180,000 inhabitants• 165,000 workplaces• 10 Billion EUR worth of goods

270 km2 = 36 % of the city area

Flooding risk areas – local conditions

Characteristics •forecast of the storm tide8 bis 12 h in advance•rising 6 m with 1.5 m/h velocity

110 km

North Sea

Page 11: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Olivers schöne Folie rein

Storm surge 11.9.07 12.09.07in the afternoon in the morning

Strategy – living with water

Page 12: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

MThw Cuxhaven

600

610

620

630

640

650

660

670

680

690

700

1835 1885 1935 1985 2035 2085

Gewässerkundliches Jahr

cm P

N (N

N -

5 m

)

Climate Change: Increasing Sea Level ?

Up to now 25 cm/100 year1850 - 2005 (155 years)

In future?

Page 13: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

2015-2050: NN + 9.0 m – ??

1962

1993

2015

Adaptation of the main public flood protection

About 500 Mio. € for Hamburg

Page 14: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Strategies against flooding by storm surges

Page 15: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Standards for Metropoletan Areas~ 1 : 1000 - 1 : 10.000

Similarities and differences in European coast protection

Similarities : Strategies

Differences: Standards and Calculation Methods

Page 16: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Standards for Metropoletan Areas~ 1 : 1000 - 1 : 10.000

Similarities and differences in European coast protection

Similarities : Strategies

Differences: Standards and Calculation Methods

Until 2050:

Implementation of national coast protection measures?

After 2050:

Implementation for a European coast protection strategy?

Page 17: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Agenda

The agency of roads, bridges and waters (LSBG)

Facts about Hamburg

Protection against storm surges

Protection against precipitation runoff

Questions to science and policy

Page 18: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Challenges to inland flood protection

• Precipitation increasesclimate change is expected to amplify this trend.

• Sealing of areas increasesThe growing city of Hamburg generates a need in new residential and industrial areas. It is aimed to build 6,000 new accommodations every year.Densely populated areas like Hamburg provide specific characteristics of water management:− high density of water ways− small waters with small catchment areas

Page 19: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Increase of sealed areas between 1935 and 2001

Page 20: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Flash flood

Was

sers

tand

[mN

N]

Page 21: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Narrowed retention areas

Page 22: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Areas of potential significant flood risk in Hamburg

Page 23: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Flooded area with HQ 200

Page 24: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Measures to reduce damages by precipitation flooding

provisions for floodplain development

• restrictions for the designation of new settlement areas

natural retention areas

• reduction of new sealed areas

• increase of storage capacities for precipitation runoff

• reactivation of former retention areas

technical flood protection measures

• improvement of drainage infrastructure

• maintenance of waters

• removal of bottlenecks

• object protection

www.sawa-project.eu

Page 25: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Retention basins in urban areas

Page 26: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Inland water drainage infrastructure in Wilhelmsburg

Page 27: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

1976

Extreme rain falle.g. 80 mm in 24 h

• Height of buildings (dwelling mount)• Pumping station• Retention area

• Drainage• Evacuation paths

+ dike heightening!

Water level 1976Water level 1976

Page 28: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Agenda

The agency of roads, bridges and waters (LSBG)

Facts about Hamburg

Protection against storm surges

Protection against precipitation runoff

Questions to science and policy

Page 29: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Measures against flooding by precipitation

Reduction of flood damage

- dykes- flood protection walls- dwelling mounts- polders- storage reservoirs

• Adapted land use• Retention - .... in the area- .... in the river- .... in the flood plain

- comprehensive planning

- resilient buildings- public risk awareness- risk assessment

pro-active flood protection

public precaution and self-responsibility

Technical concepts Flood risk managementRetention of water

Page 30: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Questions to science

• How will the sea level develop in future?

• Will the precipitation increase in future?

• Will the probability of high river run-off and storm surges at the same time rise in future?

• Will the inland water storage capacity for three tides be sufficient in future?

Page 31: Floods in Hamburg - RDPAD | Rīgas domes Pilsētas … ·  · 2017-10-20Facts about Hamburg ... engieering Mr. Gerloff S Division roads Mr. Heel ... • Which strategies for coastal

Klaus Kluge

Questions to policy

• Which strategies for coastal flood protection will be needed inthe future?

• Development of coordinated methods for consistent risk assessment and protection strategies on a European scale

• Transnational coastal defense strategies and concepts

• Financing and effort-sharing of coastal protection