The Dahme is a river flowing through the German states of Brandenburg and Berlin. It is a left tributary of the Spree River and is approximately 95 km long. The Dahme rises near the town of the same name, Dahme. The river flows north through the towns of Märkisch Buchholz and Prieros. At Märkisch Buchholz the Dahme relief canal, which diverts water from the upper reaches of the Spree at Leibsch, joins the river. At Prieros two tributaries, the Storkower Gewässer on the right bank and the Teupitzer Gewässer on the left bank, join the Dahme. These two tributaries form a chain of interconnected lakes.
North of Preross, it flows through a series of lakes, including Dolgenzee, Krüpelsee and Krimnicksee, before reaching the town of Königs Wusterhausen. The fjord-like Zernsdorfer Lankensee flows into the Krüpelsee as a right tributary. The short stretch of the Dahme downstream of the Krimnicksee is also called the Staabe. At Königs Wusterhausen the Notte joins it as a left tributary. Downstream at Königs Wusterhausen, the river joins Möllenzugsee on the right bank. Shortly afterwards Grosser Zug and Krossinsee join on the same bank. It then flows into the Zeuthener See, which joins the Seddinsee and Langer See. These lakes are located in the outer Berlin suburb of Schmöckwitz. The river flows out of Langer See at its north-western end, shortly before its confluence with the Spree at Köpenick.
In the middle of the 19th century, Theodor Fontane undertook an expedition on the Sphinx as part of his travels along the Brandenburg Marche, with the aim of reaching the lake and spring areas of the Vendian Spree.
