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The Notte is a tributary river of the Dahme in Teltow Fläming and in Dahme Spreewald. The Notte rises south of Sperenberg.
From 1856 to 1864 the Notte was developed into the Notte Channel on a length of 25km between the Mellen Lake and its mouth near Königs Wusterhausen.The Notte Channel is navigable and has three locks; one at the run-off of the Mellen Lake, one shortly before Mittenwalde and one in Königs Wusterhausen.
The Notte Channel has been made into a river port between the railway station Königs Wusterhausen and the Dahme.
East of Königs Wusterhausen's city centre joins the Notte Channel the Dahme.
It is the Spree's most important tributary and calls itself in the village Neue Mühle for a short part Staabe and has a lock that is operated in summer only.
The Notte Channel was in the past very important for Berlin's supply. The transport of agricultural products and building material took place on the water way. When the railway system was extended the importance of the Notte Channel diminished.
The old lock of the Notte Channel is at the end of the Bahnhofstraße in Königs Wusterhausen. Today mostly smaller sports boats and pleasure boats cross here.