The lower reaches of River Dosse run north of Lake Gülper See, joining the Lower Havel Waterway at kilometre 134.8. Shortly before the confluence, you cross the border from Brandenburg to Mecklenburg-Western Pomerania. Still in the territory of Brandenburg, there is a bridge that crosses the Neue Dosse. Just before this is the weir at Dammgraben – 3.8 kilometres before the confluence with the Havel. The weir is open at times but if not, carrying is straightforward.