Röblinsee is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in the Mecklenburg Lake District

Mecklenburg Lake District

The Mecklenburg Lake District is the largest coherent lakes and canals area in Germany. It is situated in southern Mecklenburg-Vorpommern, extending somewhat into the north of Brandenburg, and sometimes called "the land of the thousand lakes".The Seenplatte includes Müritz National Park, which...

, in Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. It is situated in the district of Oberhavel

Oberhavel

Oberhavel is a Kreis in the northern part of Brandenburg, Germany. Neighboring districts are Mecklenburg-Strelitz in Mecklenburg-Western Pomerania, the districts Uckermark, Barnim, the Bundesland Berlin, and the districts Havelland and Ostprignitz-Ruppin.-Geography:The district is located along...

 in the state of Brandenburg

Brandenburg

Brandenburg is one of the sixteen federal-states of Germany. It lies in the east of the country and is one of the new federal states that were re-created in 1990 upon the reunification of the former West Germany and East Germany. The capital is Potsdam...

, and lies immediately to the west of the town of Fürstenberg

Fürstenberg/Havel

Fürstenberg is a town in the Oberhavel district, in Brandenburg, Germany. Fürstenberg was the site of the Ravensbrück concentration camp, and a memorial now occupies the site.-Geography:...

. The lake has an east-west orientation, and is about 2 kilometres (1.2 mi) long and up to 0.5 kilometre (0.310686368324903 mi) wide.

The navigable River Havel

Havel

The Havel is a river in north-eastern Germany, flowing through the German states of Mecklenburg-Vorpommern, Brandenburg, Berlin and Saxony-Anhalt. It is a right tributary of the Elbe river and in length...

 flows through the Röblinsee, entering it via a 5.4 kilometres (3.4 mi) channel from the Ziernsee

Ziernsee

Ziernsee is a lake in the Mecklenburg Lake District, in Germany. Whilst most of the lake is in the district of Mecklenburgische Seenplatte in the state of Mecklenburg-Vorpommern, a portion of its southern shore is in the state of Brandenburg.The lake has an elevation of and a surface area of .The...

. The river exits the lake through a short channel and lock

Lock (water transport)

A lock is a device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is...

 in the centre of Fürstenberg, before entering the linked lakes of Baalensee

Baalensee

Baalensee is a lake in the Mecklenburg Lake District, in Germany. It is situated in the district of Oberhavel in the state of Brandenburg, and lies immediately to the east of the centre of the town of Fürstenberg....

 and Schwedtsee

Schwedtsee

Schwedtsee is a lake in the Mecklenburg Lake District, in Germany. It is situated in the district of Oberhavel in the state of Brandenburg, and lies to the east of the centre of the town of Fürstenberg...

. Navigation is administered as part of the Obere–Havel–Wasserstraße.