Originally, the Scheur was the northern branch of the river around Rozenburg island and curved south a few kilometres past Maassluis to join the Nieuwe Maas again in the Maasmond ("Mouth of Meuse") estuary near Den Briel. When the Nieuwe Waterweg was completed in 1872, the Scheur was dammed off and connected to the east end of the Nieuwe Waterweg to form the new channelized main mouth of the Rhine-Meuse delta.
The Scheur and Nieuwe Maas in 1769.The same region today.