The Boven Merwede
is a stretch of river in the Netherlands
The Afgedamde Maas river
joins the Waal
to form the Boven Merwede, which at Hardinxveld-Giessendam
splits into the Beneden Merwede river
on the right and the Nieuwe Merwede river
on the left. Its length is 8.8 km.
There is a road bridge, from the west side of Gorinchem on the north to the west side of Sleeuwijk on the south.
There three foot passenger ferries. 
Maps:   (on the latter the label "Boven Merwede" is put too much to the right)