The Rhine–Meuse–Scheldt delta is a river delta in the Netherlands formed by the confluence of the Rhine, the Meuse () and the Scheldt rivers. In some cases, the Scheldt delta is considered a separate delta to the Rhine–Meuse delta. The result is a multitude of islands, branches and branch names that may at first sight look bewildering, especially as a waterway that appears to be one continuous stream may change names as many as seven times, e.g. Rhine → Bijlands Kanaal → Pannerdens Kanaal → Nederrijn → Lek → Nieuwe Maas → Het Scheur → Nieuwe Waterweg (→ North Sea). Since the Rhine contributes most of the water, the shorter term Rhine Delta is commonly used. However, this name is also used for the delta where the Alpine Rhine flows into Lake Constance, so it is clearer to call the larger one Rhine–Meuse delta, or even Rhine–Meuse–Scheldt delta, as the Scheldt ends in the same delta. By some calculations, the delta covers , making it the largest in Europe. The economic importance of the Rhine–Meuse–Scheldt delta is enormous, since the three rivers are important navigable waterways. The delta is the entrance from the North Sea to the vast German and Central European hinterland (and to a lesser extent France). Major ports in the delta are Rotterdam, Antwerp (Belgium), Vlissingen, Amsterdam (through the Amsterdam–Rhine Canal), and Ghent (through the Ghent–Terneuzen Canal). The land areas in the delta are protected from flooding by the Dutch Delta Works. Geography The shape of the Rhine delta is determined by two bifurcations: firstly, at Millingen aan de Rijn, the Rhine splits into the Waal and the Nederrijn, and secondly near Arnhem, the IJssel branches off from the Nederrijn. This creates three main flows, two of which change names rather often. The largest and southern main branch begins as the Waal and continues as the Boven Merwede ("Upper Merwede"), the Beneden Merwede ("Lower Merwede"), the Noord River ("North River"), the Nieuwe Maas ("New Meuse"), Het Scheur ("the Rip") and the Nieuwe Waterweg ("New Waterway"). The middle flow begins as the Nederrijn, then changes into the Lek, then joins the Noord, thereby forming the Nieuwe Maas. The northern flow keeps the name IJssel until it flows into Lake IJsselmeer. Three more flows carry significant amounts of water: the Nieuwe Merwede ("New Merwede"), which branches off from the southern branch where it changes from the Boven to the