Stress test providers

A “climate stress test” of your area enables you to identify the locations that are prone to river or coastal flooding, pluvial flooding, drought, and heat. The stress test thus sets out the issues to be addressed by a local adaptation strategy. The overview below lists the parties providing stress tests in the Netherlands.

Antea Group



Antea Group have developed various methods to predict and prevent pluvial flooding of urban areas. These methods provide insight, at various levels of detail, into how rainwater drains away underground and above ground during an extreme downpour, and where this could cause inconvenience or nuisance. Collaboration with other institutes, such as Deltares, enables them to incorporate the latest data and models.

The results are presented on a map and in 3D animations, which makes them accessible to a wide audience. This enables administrators, residents, and engineers jointly to explore resources and measures to reduce and prevent pluvial flooding.

Contact: Niels IJsseldijk I I I 00316-51336134




Municipalities, district water boards, and other partners have joined forces to climate-proof cities. In actual practice, some of the measures taken still lack the interconnectivity that is aimed for, and stagnation occurs in the implementation stages. ARCADIS can help you accelerate and structure climate adaptation using our Climate-Proof City road map. The first step in this road map involves a climate stress test.

Since 2014, Arcadis has conducted stress tests for municipalities using the KlimaatTRAP methodology, to map out the consequences of climate extremes in terms of pluvial flooding, heat stress, drought, and air quality. The information used is publicly available, thus eliminating the need for major efforts on your part. The well-organised map material and the appealing reports provide you with a means of communication to involve administrators and stakeholders in the climate taskings and future-resilient choices. Working together to climate-proof the city!

Contact: Bas Bierens I I I 06-50736783

Aveco de Bondt

aveco quickscan


The liveability of our cities is being put under increasing pressure. The proper design of new developments and the proper re-design of existing structures can prevent or resolve a great deal of distress. To help you achieve such designs, Aveco de Bondt has developed quick scans for:

  • Heat stress
  • Pluvial flooding in extreme precipitation situations
  • Vegetation index
  • Opportunities and risks of dykes and dams – flood risk management, groundwater, NGEs [Dutch size units]
  • Opportunities for participation

Examples are available on the website.

Contact: Hans Kriele I I I 06-10735855


Stresstest BOOT


BOOT has devised a number of stress tests to map out vulnerable areas in the urban water system. These stress tests provide insight into the location of the vulnerable locations and the underlying cause of such vulnerability. The insight gained constitutes a proper basis for addressing the climate issues at stake, in concert with the parties involved.

The stress tests developed by BOOT generate insight into the performance of the sewer system, surface discharge, and the interaction between these two components. Thus, in addition to above-ground measures, underground measures also count in the results attained.

BOOT has ample experience in mapping out urban water system performance. Another field of expertise for BOOT is drawing up an efficient plan of measures to safeguard and improve the performance of urban water systems. Such measures are incorporated into a climate-resilient living environment and paired with the combat of heat stress.

Contact: Bertrick van den Dikkenberg I I l I 06-57719549




Climate-proofing involves the question as to what degree dangerous weather will impact on social and economic life. To map out climate resilience, it is important to know how dangerous weather will affect your municipality. What can you expect and how can you anticipate the consequences? An important subsequent question: what is the action perspective?

On the basis of their ample experience with dangerous weather and climate change, collaborating partners HydroLogic and Weather Impact offer a unique point of departure for helping you put the right questions. Their expertise enables you to conduct a stress test that is geared to the local situation of your municipality or region. Together, you will map out the main risks and vulnerabilities, and set up a plan to safeguard the municipality’s liveability and safety.

Contact: Matthijs van den Brink I I 06-50636712

Imber advies



Your municipality is affected by waterlogging, or you wish to know which areas will be prone to waterlogging in the event of more extreme precipitation in the future? And you wish to prevent rainwater from flooding or damaging houses, businesses, and/or important infrastructure? Imber Advies can conduct a made-to-measure stress test on your behalf. Their work generates transparent maps, highly detailed animations, and thoroughly substantiated recommendations. Dozens of parties working on precipitation-proofing have led the way.

With the stress test, they provide insight into the locations in your municipality (or area) that are prone to waterlogging and what the underlying causes are, now and in the future. To this end, they employ sophisticated software (InfoWorks ICM) and integrated calculation models for sewer systems, surface water, and ground level. On the basis of local expertise/insights and the results of the simulations, Imber Advies develops solutions, together with you, that are geared to the specific situation in your municipality.

Contact: Ferry van den Eng I I I 06-17028782




Movares wants to assist municipalities, grid managers, and other asset managers to proceed from Analysis to Ambition and Action. To this end, they have developed the Stress Test Plus. The PLUS in this test is the risk-based approach that is used in an interactive process, together with you, to create insight into the risks that you deem acceptable. After completion of the test, you will have a clear picture of where and why potential measures are advisable, and in what priority. If so desired, a multi-year investment agenda may be provided.

Contact: Mattijs Hehenkamp I I I 00316-23025447

Nelen & Schuurmans



Experience has taught us that a map with a detailed visualisation of the impact of climate change is the best way to encourage both internal and external stakeholders to embrace climate adaptation in their operations. That is why more than 50 municipalities (from Amsterdam to Zutphen) and a host of district water boards (HHNK, Delfland, WDOD) have joined forces with Nelen & Schuurmans to conduct stress tests and climate adaptation strategies. Nelen & Schuurmans can conduct stress tests quickly and reliably using the 3Di hydrological model, and present the results in an interactive online climate adaptation atlas.

The climate adaptation atlas quantifies the effects and risks of climate change in great detail. Nelen & Schuurmans confer with the client on which images would be relevant to include in the map. The analyses reveal bottlenecks and opportunities, which are used as the basis for drawing up, together with the client, a targeted plan of approach for climate-proofing a municipality.

Contact: Olga Pleumeekers I I I 06-14 89 18 64




Conducting a stress test marks the start of a spatial adaptation process. Stakeholders collectively discover the urgency of developing measures. This shared sense of urgency constitutes the basis for subsequent steps. That is why ORG-ID focuses, from the very beginning, on ownership of and support for spatial adaptation within your organisation and among your partners.

They support, advise, and assist you: advice in the form of recommendations, e.g., on the parties or departments to be involved, the information that could or should be available, the manner in which available tools could be used; assistance in the form of running a climate workshop, producing map materials, and drawing up a report or administrative memorandum. They frequently collaborate with Hydrologic and GrondRR.

Contact: Roelof Westerhof I I I 06-51064791




PROquint conducts climate adaptation stress tests in collaboration with other agencies. The tests are conducted according to the “Natural Alliance” method, and geared to the physical and social features of the area. They identify exposure and map out vulnerabilities. In conclusion, a follow-up strategy is suggested.

Contact: Hans Olsthoorn I I I 00316-53811584




Keeping our cities liveable and safe in the future requires a proper approach to climate change, urban densification, and water management. This calls for creativity and making the right choices. In addition to visualising the various climate effects (river and coastal flooding, pluvial flooding, drought, and heat), the Climate Stress Test conducted by RHDHV also provides insight into the impact on vital infrastructure and vulnerable objects in the chains. Supplementary to conducting vulnerability scans and stress tests (light), the services comprise the organisation of inspirational sessions and climate workshops, and the development of adaptation strategies and implementation programmes. RHDHV prefers to set down the results of a stress test in a report combined with an atlas.

Contact: Nanco Dolman I I I 00316-52351893




Sweco conducts climate scans throughout the country. They assist municipalities and local administrators in preparing for the changing climate by offering technical support and helping them organise collaboration with other parties. The approach follows the basic guidelines of the stress test, but will also address your specific situation and wishes. The process is supported by supporting calculations and the Sweco climate app, if so desired.

Contact: Martijn Steenstra I I I  00316-22371791




The climate is changing, and cities are growing wetter, drier, and hotter. The stress tests offered by Tauw can be divided into three main categories:

  • WOLK: the Tauw Pluvial Flooding Map (WOLK) is the most effective instrument for gaining insight into an area’s water management during a period of severe precipitation. View the Deventer example.
  • Heat stress: the heat maps developed by Tauw in collaboration with WUR/TNO/Deltares point out the real hotspots in cities during extremely hot days. View the Deventer example.
  • Drought stress: in three short steps, the drought stress quick scan combines expected climate change with an area analysis of the water and greenery system.

Contact: Edwin van der Strate I I I 00316-653166613




Tygron supplies software for the fast, transparent, and integrated exploration and coordination of design options. In a realistic 3D environment, government authorities, experts, policy makers, and local residents can plan and experiment with scenarios and area development strategies in an intuitive manner.

The Tyron engine is much faster than regular software. As a client, you will have access to our super computer, enabling you to calculate more than 100x faster than usual at an extremely high resolution: 10,000x higher than usual. You will have automatic access to a host of open data sources, but you may also enter your own data.

The Tygron engine allows you to map out bottlenecks in the purview of the stress test and develop adaptation measures focused on issues such as waterlogging, heat stress, and soil subsidence. You may combine this with other themes that are relevant to area development, such as construction tasking. Tygon works in partnership with consultants. Municipalities and district water boards also support their area processes with Tygron software.

Contact: Daniel Tollenaar I I I 070-2060126




Flooded streets, water in crawl spaces, foundations running dry, subsiding ground levels, and heat in the city. Identifiable problems that are gaining in significance due to our changing climate. The Wareco stress test maps out the focus areas in an integrated manner.

Wareco has made its mark with its integrated, practice-oriented, and made-to-measure approach. Each project commences with an exploratory risk scan. Subsequently, we zoom in on high-risk spots with detailed model calculations and a field visit. The many interfaces of urban water, groundwater, buildings, soil, public spatial planning, and greenery warrant interconnected consideration, in order to develop viable and sustainable solutions.

The results of the stress tests are bundled into a single, clear outline map with guidelines for practical decisions by administrators and individual residents. The map is provided in an online viewer or printed in a large format to take outside. This integrated map is the tool enabling practical decisions regarding the (re)development of both public and private space.

Contact: Wisse Beets I I I 06-22858895


stresstest WenR


Wageningen Environmental Research (Alterra) offers expertise and support when drawing up regional stress tests. As the pre-eminent knowledge institute for the green space, WEnR commands all the expertise needed to fully integrate climate change into a system approach. The advantage of such an approach is that problems caused by climate impact are tackled closer to the source, whilst minimising evasion of responsibilities.

The subsoil, or better put, the natural basic system (soil, water, greenery) of cities is decisive for the effectiveness of adaptation strategies. WEnR uses various tools and models to map out the impact of the KNMI'14 scenarios. Collaboration with regional partners bolsters the concentration of strengths, efficiency gain, and coordination within the region. Furthermore, tying in with the regional landscape system on the one hand and local ambitions on the other ensures an integrated approach. WEnR has contributed to the Climate Impact Atlas and the Spatial Adaptation knowledge portal; they have also introduced climate workshops in the Netherlands. They ensure alignment with the development of the standard stress test in order to meet all the requirements stipulated by the Delta Plan on Spatial Adaptation.

Contact: Tim van Hattum I I I 0317-48 34 41




Witteveen+Bos provides climate adaptation stress tests as a product and as a process. The product entails a substantive analysis of an area’s vulnerabilities ensuing from climate change: flood risk management, pluvial flooding, drought, and heat. The Climate Impact Atlas enables you to conduct your own stress test light. Contact Witteveen+Bos to provide any expert assistance or advice. The experts have developed efficient tools that provide you with rapid, tailored, and more reliable insights. Comprehensive interests (vital infrastructure, vulnerable target groups, major risks) call for a thorough area analysis by Witteveen+Bos, entailing an integrated exploration of sustainable solutions. If you opt for a process, they offer you support in going through the steps of the Vulnerability Scan and the Adaptation Planning (as outlined in the Guide), together with you and area-based partners.

Contact: Ronald Groen I I I 003170-370 07 03