The IVAVIA methodology is designed to guide a risk-based vulnerability assessment as part of phase 1; helping you to map, analyse and communicate the impact of climate trends and weather events on key elements of your city’s physical, social and economic fabric. IVAVIA provides guidance on how to prepare, gather, and structure data for your risk-based vulnerability assessment; to quantify and combine vulnerability indicators; to assess risk; and to present outcomes.

IVAVIA consists of seven modules (see Figure 8 below). Modules 0-2 allow a qualitative assessment, Modules 3-5 a more comprehensive, quantitative one, and Module 6 describes how to best present the outcomes of IVAVIA to your stakeholders.


Figure: IVAVIA modules

These software tools require a password, which is to be requested from ivavia-support@iais.fraunhofer.de.

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  • To understand and visualise the cause-and-effect relationships of climate change
  • To identify geographical risk and vulnerability hotspots
  • To assess the demographic, economic and local impacts of climate change now and in the future.
  • To identify entry-points for adaptation measures and areas where priority action is needed.

IVAVIA can be used in a range of ways, depending on the intended outcome and resources available (see decision aid at Figure 9 on the previous page). For example, where the purpose is to raise awareness across departments of the consequences of particular risks and connections between them, Modules 0-2 can support a qualitative assessment, using Module 6 to present the outcomes. Where the outcomes are intended to inform operational decisions, a more comprehensive use of IVAVIA is recommended. See the IVAVIA Guideline to help assess the level of resources needed for your situation and the corresponding modules to use – and for practical guidance on taking full advantage of all seven IVAVIA modules. The guideline provides an overview of relevant key concepts and climate scenarios, a detailed description of the modules and a step-wise approach to using them.

The application of IVAVIA is embedded in a larger cycle of repeated risk-based vulnerability assessment (IVAVIA), identification of adaptation options, adaptation planning, and implementation (RESIN conceptual framework). IVAVIA starts with preparatory work in module 0. The novelty of this module is a methodical identification of the relevant climate related hazards. The criteria for the selecting the hazards and the sources and studies upon which the selection is based should be documented, as a reference for applying IVAVIA in the next cycle.

The modules 0-2, as described in the IVAVIA guideline document, have been applied to Greater Manchester, Paris, Bilbao, Bratislava (RESIN city case studies), and other cities in the UK and the Netherlands so far. Intermediate results of this activity are a set of impact chains. Modules 3–5 focus on quantitatively estimating risk. Here, cities need to determine suitable indicators for components of vulnerability and acquire data for performing calculation of climate change related risk to the exposed assets of the city under investigation. After the application of module 6, participating cities may end up with a map about the risk of their respective city (or parts or assets thereof) exposed to a hazard of their choice (see Figure for getting an impression how such maps could look like).

Figure: Example human risk map from Bilbao for the hazard exposure combination fluvial flooding on built-up area

Cities are invited and encouraged to submit comments and feedback on the tool via the RESIN LinkedIn group.



RESIN IVAVIA research background

Realisation & implementation IVAVIA

Realisation & implementation of method and tools for Impact and Vulnerability Analysis of Vital Infrastructures and built-up Areas



Erich Rome, Manfred Bogen, Rainer Worst, Daniel Lückerath, Betim Sojeva, Oliver Ullrich, Hans Voß, Norman Voß, Jingquan Xie (Fraunhofer);


Angela Connelly, Jeremy Carter, John Handley (UNIMAN);

Matt Ellis (Greater Manchester);

Margaux Dumonteil, Jean-Marie Cariolet (EIVP);

Eva Streberova (Bratislava),

Efren Feliu, Maddalen Mendizabal Zubeldia, Beñat Abajo (Tecnalia);


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Conceptual and functional design and architecture of Impact and Vulnerability Analysis of Vital Infrastructures and built-up Areas



Erich Rome, Manfred Bogen, Hans Voss, Norman Voß, Rainer Worst (Fraunhofer);


Maddalen Mendizabal Zubeldia, Beñat Abajo (Tecnalia);

Angela Connelly, Jeremy Carter (UNIMAN);

Astrid Kellermann (SIEMENS);

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RESIN State of the Art Report (4) 

Vulnerability Assessment: Definitions, Indicators and Existing Assessment Methods 

A. Connelly, J. Carter, J. Handley, E. Rome, R. Worst, N. Voβ



Vulnerability Assessment: Definitions, Indicators and Existing Assessment Methods

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