3D clay reefs should create a more sustainable environment for flora and fauna

An open stone structure full of microhabitats

“Under normal circumstances, we would build a dam on the river bank by placing rocks and stones,” Stapper continues. “The goal would be to break the surge and provide a safe habitat and spawning ground for a wide range of species. Instead of placing rocks and stones, we now use 15 tidal reefs.”

Urban Reef in Rotterdam designed these tidal reefs. They are made of 3D-printed clay, then fired in a kiln to achieve a ceramic finish. “In addition to the rocks and stones placed in the river, these tidal reefs are a complex network of depressions with a rough surface,” Stapper explains.

The depressions in these tidal reefs allow all kinds of river life to nest in and around them. They live in a sheltered environment, despite the strong current of the Meuse. This is beneficial for biodiversity, ecological water quality and the riverbank.

“We monitor the situation to see how well the reefs are acting as a dam, how well they are withstanding currents and conditions, and most importantly, how well they are supporting biodiversity. Ultimately, the goal is to provide a home for as many species as possible,” Stapper says.