Schluchsee

The Schluchsee is a reservoir lake in the district of Breisgau-Hochschwarzwald, southeast of the Titisee in the Black Forest near Freiburg im Breisgau, Germany.
In the Alemannic dialects of the region the name of the lake is the Schluechs [ʃluˑəχs] or Schlues [ʃluˑəs]. Historical sources also spell it with a diphthong: 983 lacus Sluochse, 1095 Schluochsee, 1125 predium Sluocse, 1312 der sê ze Sluoze. Thus it cannot be claimed that the name, as is often asserted, from the Middle High German slûch ="pipe, tube" , because in this case in the present dialect and the historical sources no diphthong was available. Albert Krieger links the name to the Middle High German sluocht "ravine". But this meaning is also not accurate.

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