UFM-HH - Urban Flood Management in Hamburg: New Planning Strategies for Flood Prone Urban Areas to Cope with the Increased Risk due to Climate Change
Hintergrund und Ziele
The climate change will lead to more extreme weather conditions in Hamburg. The occurrence of extreme weather conditions and the increasingly intensive use of flood-prone areas leads to an increased residual risk behind the defence structures. While the cities have thus far placed their trust in dyke safety when carrying out new developments, a paradigm shift appears to be called for, so that the eventuality of overstressing and subsequent failure of the defence systems can also be taken into account in the development plans and emergency management of these areas. To this end, the principles of preventive flood protection must be applied more stringently in urban planning, which calls for a coordinated land use strategy that considers flood risks. The information policy and precaution strategies must take natural catastrophes into account, so that the communities concerned are encouraged to adopt building and behavioural practices adapted to the possibility of flood events on their own initiative.
The project aims to:
- Review the current practices of spatial planning and preventive flood management of such urban areas that lie in flood-prone zones, in the sense of the ""Act to Improve Preventive Flood Control"";
- Locate and quantify the risks and weaknesses of these practices in the event of floods caused by the climate change;
- Research new methods and strategies for urban planning, building precautions and civil protection that will protect against extraordinary storm surge events attributable to global warming that lead to the overstressing of existing flood defence systems.
Laufzeit
bisUntersuchungsregion/-raum
Land
- Deutschland
Bundesland
- Hamburg
Naturräumliche Zuordnung
- Nordwestdeutsches Tiefland
Schritte im Prozess zur Anpassung an den Klimawandel
Schritt 1: Klimawandel verstehen und beschreiben
Ansatz und Ergebnisse
No climate scenarios are used;
rather, storm surges are examined as extreme events that will increase in their intensity due to the climate change.
Parameter (Klimasignale)
- Meeresspiegelanstieg und Sturmfluten
Schritt 2a: Risiken erkennen und bewerten (Klimafolgen/-wirkungen)
Analyseansatz
The climate effect considered is the increase in extreme weather conditions and resultant extreme storm surges that may lead to failure of the coastal defence systems.
Describe here, which approach for the vulnerability analysis, risks and/or chances is/was used within your project and which results emerged from it or are expected
Ansatz und Risiken / Chancen
Vulnerability is studied in the context of the susceptibility of buildings and infrastructure to flood events.
Schritt 3: Maßnahmen entwickeln und vergleichen
Maßnahmen und/oder Strategien
Background: The increase of the residual risk due to the climate change and intensive land use requires a paradigm shift, so that the eventuality of overstressing and subsequent failure of the defence systems can also be taken into account in the development plans and emergency management of the protected areas (principles of preventive flood protection).
Sensitivity matrices are to be established to locate and quantify the risks and weaknesses of the current flood management practices, with which the degree of damage mitigation can be assessed for individual preventive measures (so-called "resilience performance indicator" method). Furthermore, cost-effective and easily implemented "wet-proofing" measures will be developed for flood-prone areas, and integrated in a resilience concept for certain building types and exposure conditions.
The aims are to preserve the possibilities for living in flood-prone areas, to develop settlement structures, building designs, and land use strategies that take possible floods into account, to align the information policy and precaution strategies with the possibility of natural catastrophes, to encourage the communities concerned to adopt building and behavioural practices adapted to the possibility of flood events on their own initiative, and to research new methods and strategies for urban planning, building precautions and civil protection. In addition, a decision support system (DSS) will be developed and an integrative, internet-based information system will be created, for example, for evacuation measures and escape routes and for improving the performance of the early warning and alarm systems.
Schritt 4: Maßnahmen planen und umsetzen
Kosten
monetary valuation of the risks of flooding
Wer war oder ist beteiligt?
Förderung / Finanzierung
BMBF-funded programme "Risk Management of Extreme Flood Events" (RIMAX)
Projektleitung
Institute of River and Coastal Engineering, TU Hamburg-Harburg
Beteiligte/Partner
- HafenCity University Hamburg, Institute for City, Regional and Environmental Planning;
- Björnsen Beratende Ingenieure GmbH, Koblenz.
Administration (involved as observers):
- Urban Development and Environment Agency, Free and Hanseatic City of Hamburg.
Foreign partners:
- City of Dordrecht (Netherlands),
- Waterschap Hollandse Delt (Netherlands),
- Delft Hydraulics (Netherlands),
- Dura Vermeer Business Development BV (Hoofddorp, Netherlands),
- Environmental Agency (Great Britain)
Ansprechpartner
Technische Universität Hamburg-Harburg
Institut für Wasserbau
Denickestraße 22
D-21073 Hamburg
