The Vecht is a Rhine branch in the Dutch province of Utrecht. It is sometimes called Utrechtse Vecht to avoid confusion with its Overijssel counterpart. The area along the river is called the "Vechtstreek".
The Vecht originates in the city of Utrecht, where the Kromme Rijn stream forks into two branches: the Leidse Rijn/Oude Rijn branch to the west and the Vecht to the north. Originally the Vecht branched off south of the city near the Roman fort Fectio, flowing eastwards around the city, but in the 12th century a northern shortcut was dug out.
The Vecht twists and turns north past the towns and villages of Maarssen, Breukelen and Nigtevecht, crosses the border into the province of North Holland, passes the town of Weesp and discharges into the IJmeer (Lake IJ, part of the former Zuiderzee) at Muiden. The Amsterdam-Rijnkanaal (Amsterdam-Rhine Canal) was dug in the Vecht basin.
The Roman historian Tacitus tells us that in the first century CE, a Roman fleet sailed due north down a Rhine branch, then sailed past Lake Flevo (now the Markermeer and IJsselmeer lakes) into the North Sea. This could have been the IJssel, which the Romans connected to the Rhine themselves, or the river Vecht.
Vecht river at Nigtevecht.