This step involves collecting, analysing, visualizing and sharing information about the risks of flooding, extreme precipitation, drought and heat. It allows you to perform a stress test for your area and to use the Climate Impact Atlas to collect information about your area.


A Guide for implementing a Climate proof stress test has been developed to apply the Vulnerability step. This guide presents a phased approach: an exploratory vulnerability scan (stress test light) and an in-depth analysis. The stress test light allows you to explore which effects are more or less relevant for your area of choice. You can use the in-depth analysis to discover the nature of these vulnerabilities based on a specific topic or area.

You conduct your analysis within the framework of the Deltascenarios. These scenarios combine climate change and socio-economic development. The scenarios are created by the PBL Netherlands Environmental Assessment Agency, CPB Netherlands Bureau for Economic Policy Analysis, the KNMI Royal Netherlands Meteorological Institute, Wageningen UR/LEI and Deltares. The KNMI calculates the scenarios for the years 2030 and 2050.

An important tool to use for the stress test is the Climate Impact Atlas. The atlas contains a range of maps visualising effects, risks and sensitive features. The maps visualise information available for the whole of the Netherlands and are largely developed by knowledge institutes (Alterra – Wageningen UR, Deltares, KNMI, TNO). The relevant spatial scale varies per map.

Usable tools for the in-depth analysis:

  • Run off models that visualise in detail how run off is displaced in the streets and sewage systems, and where bottlenecks occur. Examples are  WOLK, 3Di, WODAN123.
  • Publications on regional water management can be found in the STOWA Hydrotheek.
  • Publications on urban water management can be found on the website of the RIONED foundation.
  • Local and regional public information on flood risks and consequences (and other associated risks) can be found on Professionals can make use of a version of the website, accessible via an account.

There is much to learn from the experiences of residents, companies, gardeners, sewage experts etc. Previous experiences with flooding and/or extreme weather events in similar areas also yield valuable information. The following sources provide this information:


Some examples of vulnerability analyses that have been conducted:



Climate and water impact mapped out

Handreiking stresstest

Determine climate change resilience and find adaptation measures

In practise

After performing this step, you gain knowledge on where the vulnerability to flooding will increase and what effects climate change can have for your area. You can use this information to formulate a joint ambition and to set concrete goals (Ambition).