|This article does not cite any references or sources. (September 2010)|
Almost immediately after entering the Netherlands, the Rhine splits into many branches. The main branch is called the Waal which flows from Nijmegen to meet the river Meuse; after which it is called Merwede. Near Rotterdam the river is known as Nieuwe Maas, and becomes the Nieuwe Waterweg flowing into the Northsea at Hoek van Holland.
The Nederrijn refers to the more northern former main branch of the Rhine, which flows past Arnhem; splits off the IJssel which flows into the IJsselmeer and then splits into the Lek River and the Kromme Rijn at Wijk bij Duurstede. The Lek flows into the Merwede. The Kromme Rijn continues past Utrecht, becomes the Leidse Rijn, then Oude Rijn and flows into the Northsea at Katwijk.
The German "Niederrhein" is applied both to the German section of the Lower Rhine river as well as to parts of the surrounding Lower Rhine region.
 See also
- Upper Rhine
- Middle Rhine
- Low Rhenish
- Lower Rhine, a French department bordering the Upper Rhine