Within the Citizens4Water project, we developed a platform that makes citizen science projects on freshwater visible worldwide. To map all existing projects, we collaborated last summer with several international students, who systematically explored the internet and compiled an inventory of all relevant projects that could be found online.

On the one hand, they examined existing platforms and inventories, such as Zooniverse and citizenscience.eu, on the other hand, they conducted searches via search engines and social media. The methodology they used was based on that of the Citizen Science Scan, with the key difference that this time the search was conducted internationally and with a specific focus on freshwater projects.

The result is an inventory of 369 projects, spread across the globe. The full inventory is now available in open access on Zenodo.