Originally a lake about 3 metres deep, it was transformed into a canal when connected to Saltsjön in the 1920s and a 6 metres deep channel was dug between  and Saltsjön and another to .
Initially a relatively shallow lake, its transformation into a canal when connected to Saltsjön in the 1920s led to the creation of a deeper channel, which was subsequently extended to connect Saltsjön with another lake or waterbody.