Gosen Canal

The Gosen Canal () is a canal in the eastern suburbs of Berlin, the capital city of Germany. It takes its name from the village Gosen, at the southern end of the canal. It is in length and links the Dämeritzsee and Seddinsee lakes. The Dämeritzsee and Seddinsee are both navigable, with the Seddinsee providing a link to the River Dahme and the Oder-Spree Canal, and the Dämeritzsee providing a link to the Müggelspree reach of the River Spree and to the Flakensee. 
Although the plan for the Gosen Canal goes back to 1872, construction did not start until 1933, and the canal opened in 1936. The principal reason for the construction was to provide an alternative route for commercial shipping between Berlin (via the Dämeritzsee) and the Oder-Spree Canal (via the Seddinsee) during the 1936 Summer Olympics, when the more normal route via the Langer See was closed in order to use the regatta course at Grünau for the Olympic canoeing and rowing events. 
The canal is navigable by boats with a draught of up to . It has no locks, but is crossed by a single bridge, with a maximum clearance of . Small craft are also able to navigate between the two lakes using the roughly parallel "Gosener Graben". 
Besides seeing considerable sightseeing and leisure traffic, the canal today also forms a link in a commercial navigation route from the limestone workings at Rüdersdorf, which reaches the Flakensee by a lock at Woltersdorf.
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