The 'Nieuwe Maas'(English: ''New Meuse'') is a river branch of the Rhine-Meuse delta in the
Netherlands. It runs from the confluence of the rivers
Noord and
Lek, and flows west through
Rotterdam. It ends west of the city where it meets the
Oude Maas, near
Vlaardingen, to form
Het Scheur. The total length is approximately 24 kilometers.
The Nieuwe Maas flows through some of the most densely populated and developed areas in the Netherlands. Along its shores are numerous harbours and industries.
History
During the early
Middle Ages the Nieuwe Maas was considered to be the continuation of the river
Merwede and was named accordingly. In the original situation, the Merwede was the continuation of the river
Waal (itself being a distributary branch of the river
Rhine), but after some major floods the river
Meuse shifted its course towards the Merwede as well. From that moment on, several stretches of the original Merwede were named Meuse instead.
As a result, for many centuries the Nieuwe Maas and its sibling
Oude Maas were considered part of the Meuse delta. Near Vlaardingen, these two met and then split again at the island of
Rozenburg: the north branch was known as Het Scheur and the south branch as Nieuwe Maas or Brielse Maas (Brill Meuse) because it flowed close to
Brielle. They met again to form an
estuary known as Maasmond ("Mouth of Meuse"). However, both Meuse and Rhine shifted their courses southwards again. As a result, the Nieuwe Maas is once again a primary distributary branch of the Rhine, while the Meuse is currently delivering only very small amounts of water towards its former mouth.

Nieuwe Maas and its mouth in 1769.
With the completion of the
Nieuwe Waterweg, the lower Nieuwe Maas no longer reaches the sea as a primary outflow for the river Rhine. The Brielse Maas section was dammed off from
Het Scheur in the middle of the 20th century (now forming
Briel Lake), forcing all waters to flow through the artificial Nieuwe Waterweg.
Links across the Nieuwe Maas
From west to east:
★
Beneluxtunnel (tunnel; motor vehicles, cyclists and
metro)
★
Maastunnel (tunnel; motor vehicles, cyclists, pedestrians)
★
Erasmusbrug (bridge; motor vehicles, cyclists, pedestrians, trams)
★ Maastaxi (ferry; pedestrians)
★ Metrotunnel (tunnel; metro)
★ Willemstunnel (tunnel; train)
★
Willemsbrug (bridge; motor vehicles, cyclists, pedestrians)
★ Van Brienenoordbrug (bridge; motor vehicles, cyclists, pedestrians)

The
Erasmusbrug ("Erasmus Bridge") across the Nieuwe Maas in Rotterdam.