linguistic:paraphrasing
In Germany

Shortly after crossing the Czech-German frontier, and passing through the sandstone defiles of the Elbe Sandstone Mountains, the stream assumes a north-westerly direction, which on the whole it preserves right to the North Sea.

The river rolls through Dresden and finally, beyond Meissen, enters on its long journey across the North German Plain passing along the former western border of East Germany, touching Torgau, Wittenberg, Dessau, Magdeburg, Wittenberge, and Hamburg on the way, and taking on the waters of the Mulde and Saale from the west, and those of the Schwarze Elster, Havel and Elde from the east. In its northern section both banks of the Elbe are characterised by flat, very fertile marshlands (Elbe Marshes), former flood plains of the Elbe now diked.

At Magdeburg there is a viaduct, the Magdeburg Water Bridge, that carries a canal and its shipping traffic over the Elbe and its banks, allowing shipping traffic to pass under it unhindered.

From the sluice of Geesthacht (at kilometre 586) on downstream the Elbe is subject to the tides, the tidal Elbe section is called the Unterelbe (Low Elbe). Soon the Elbe reaches Hamburg. Within the city-state the Unterelbe has a number of branch streams, such as Dove Elbe, Gose Elbe, Köhlbrand, Norderelbe (Northern Elbe), Reiherstieg, Süderelbe (Southern Elbe). Some of which have been disconnected for vessels from the main stream by dikes. In 1390 the Gose Elbe (literally in English: shallow Elbe) was separated from the main stream by a dike connecting the two then-islands of Kirchwerder and Neuengamme. The Dove Elbe (literally in English: deaf Elbe) was diked off in 1437/38 at Gammer Ort. These hydraulic engineering works were carried out to protect marshlands from inundation, and to improve the water supply of the Port of Hamburg. After the heavy inundation by the North Sea flood of 1962 the western section of the Southern Elbe was separated, becoming the Old Southern Elbe, while the waters of the eastern Southern Elbe now merge into the Köhlbrand, which is bridged by the Köhlbrandbrücke, the last bridge over the Elbe before the North Sea.

The Northern Elbe passes the Elbe Philharmonic Hall and is then crossed under by the old Elbe Tunnel (Alter Elbtunnel), both in Hamburg's city centre. A bit more downstream the Low Elbe's two main anabranches Northern Elbe and the Köhlbrand reunite south of Altona -Altstadt, a locality of Hamburg. Right after both anabranches reunited the Low Elbe is passed under by the New Elbe Tunnel (Neuer Elbtunnel), the last structural road link crossing the river before the North Sea. At the bay Mühlenberger Loch in Hamburg at kilometre 634, the Northern Elbe and the Southern Elbe (here now the cut-off meander Old Southern Elbe) used to reunite, which is why the bay is seen as the starting point of the Niederelbe (Lower Elbe). Leaving the city-state the Lower Elbe then passes between Holstein and the Elbe-Weser Triangle with Stade until it flows into the North Sea at Cuxhaven. Near its mouth it passes the entrance to the Kiel Canal at Brunsbüttel before it debouches into the North Sea.