Grip op Water Altena

In the Netherlands, climate change leads to excessive local rainfall. This causes pluvial flooding, especially in urban areas. At the same time, citizens tend to turn their gardens from green spaces into paved, partially roof-covered outdoor living areas. This counteracts measures taken by authorities to increase the water storage capacity in urban areas. In order to reduce the impact of pluvial flooding, measures need to be taken by both authorities and citizens.

Within the area of water board Rivierenland, the Altena region has experienced two pluvial flooding events with serious damage in the last five years. Together with the water board and local stakeholders in Altena, Ground Truth 2.0 has set up the Citizen Observatory Grip op water Altena. The aim of the Observatory is to reduce the impact of future heavy rainfall events in Altena. The project is demonstrating that such observatories are technologically feasible, can be implemented sustainably and that they have many societal and economic benefits. The Dutch demonstration case Grip op Water is focusing on climate-proof water management in the municipality of Altena.

The team of the Citizen Observatory Grip op water Altena


Together with citizens, organizations, the municipality and the water board, we want to make Land van Heusden en Altena more resilient for climate change, by:

On the online platform of Grip op water Altena, citizens and authorities can share information about the weather and water system through interactive maps. Stakeholders can share their knowledge on the implementation of measures and inspire others to generate water storage areas. Social media are used for awareness raising and for communication between stakeholders. As a result, stakeholders can engage in co-operative urban planning and flooding can be prevented.

For more information on het Groundtruth 2.0 project, visit the project website.

Grip op Water Altena was set up with the help of the Ground Truth 2.0 project. The Ground Truth 2.0 project received funding from the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No. 689744 and finished in 2019.