The Home River Bioblitz is a world-wide citizen science event where people explore the biodiversity of their local river.

From 24th to 26th of September 2021, people around the world will go out to explore their local rivers, hosting the second Home River Bioblitz. During its first edition, over 500 people collected biodiversity data around more than 40 rivers, using iNaturalist.

River Collective

Why the Home River Bioblitz?

A bioblitz is a communal citizen-science effort to record a wide variety of species on a specific location within a certain timeframe. Bioblitzes are a way to connect people to their environments, zooming in to details they normally pass by and at the same time generating useful data for science and conservation. 

The Home River Bioblitz focuses on the biodiversity in and around rivers, which are at the heart of all ecosystems. The event connects the stories of the people that protect, restore and celebrate these valuable places. Take a look at this storymap to learn more! 




During the Home River Bioblitz, people go out to explore their local rivers together with their peers, friends and family, thereby enlarging their local network of people that care about rivers. They identify the observed species with help of the global iNaturalist community. During an online recap session, we chat about the day with various specialists, zooming into some remarkable observations as well as discussing new ways to relate to our local river wildlife.

We welcome you to participate in the next Home River Bioblitz that will take place from 24th to 26th of September 2021, ending on World Rivers Day!


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This event was partly supported by a grant from the National Geographic Society.