Google translation: The lake is a small lake and is situated at 382 m. ü. M. in the town of Bad Säckingen in the southern Black Forest in the German state of Baden-Württemberg. The natural lake is up to 13 m deep. It was 1802 and in 1803 changed over the years by human hands. At that time he was still called the Black Sea, from Schöpfebach him water is fed by an underground passage. The headwaters of Schöpfebach lies on the western Eggberg and opens in the town of Bad Säckingen in the Rhine. Back then flowed the Schöpfebach in backfilled in 1830, the northern arm of the Rhine, since then he has in the city of Bad Säckingen an artificial and mostly underground flow.