Explore the Aa River.
"The renaturalization of streams is a common strategy for improving the ecological quality of water bodies as mandated by the European Water Directive. For that reason, parts of the Aa stream in Münster upstream until its flow into the Aa lake covering 2.6 km were renaturalized from 2012 to 2013." (check source)
This project compares the Aa River in 2018 and the Aa River in 2024.