Project 7: Delft Meet Regen results

In 2021, 105 citizens of Delft have gathered 5128 rain measurements over a three month period (1st August-31st October)! The data until September 17th have been analyzed by two TU Delft students, Karen Chen and Rafaël van Beek. The results look very promising and you can find a summary of them in this infographic. Additionally, we organized a webinar on November 24th, during which Karen and Rafaël have presented their results. You can find their presentations here (in Dutch) Karen and Rafael.

All the data points can be found on our data map (map 4).

Results 2020

Between July and September of 2020, we received 1991 measurements from 95 participants. These data were subsequently analysed by TU Delft student Illias Timori, guided by principal investigator Marie-Claire ten Veldhuis. The results are promising! Not only did we receive a lot of data, but most of the data is as reliable as the official KNMI (Royal Dutch Meteorological Institute) data. Because the KNMI has a lot less rain gauges per square kilometer, Delft Measures Rain provides a higher resolution of rain measurements within Delft. That is exactly what we were looking for! You can find an overview of the most important results in the infographic. All data can be found on our data map.

Do you need some inspiration or support to make your garden greener, insect-friendly or climate proof? Have a look at www.klimaatmaatdelft.nl (Dutch)

Delft measures Rain 2020


Variability in rainfall across the city

Marie-Claire ten Veldhuis is a researcher of the TU Delft and investigates how cities influence local rainfall patterns. The amount of rainfall can differ for every neighborhood, despite the relatively small distances between them.

Marie Claire ten Veldhuis / TU Delft

The Royal Dutch Meteorological Institute (KNMI) measures rainfall throughout the Netherlands and on average has 1 rain gauge per 100 km2. In total, there are 300 gauges throughout the country. Apps, like Buienradar (RainRadar), predict and measure the rainfall for every 1 km2. However, the rainfall is measured in an indirect manner, and the results are often not really precise. 

During Delft Measures Rain, we try to increase the number of rain gauges, so that we can do a daily measurement for every km2 of Delft. We aim to do at least 1 measurement per km2 of the city for the duration of 2 months. 


Who and where?

During Delft Measures Rain, we try to increase the number of rain gauges, so that we can do a daily measurement for every km2 of Delft. We aim to do at least 1 measurement per km2 of the city for the duration of 3 months. To do this, we use manual rain gauges and sensors that will be connected to the WOW-KNMI network of local weather stations.

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