The Čertí (Devil's) Lake was created when the Pekelský (Hell's) Stream was dammed up in the upper part of Pekelské (Hell's) Valley, situated ca 1.5 km north of the small town of Meziboří.

In the past Čertí Lake was one of many water constructions supplying water to the now non-existent mills in the Šumné Valley. The Čertí Lake retained water from Pekelský (Hell's) Stream and helped to supply mills in the Šumné Valley at the time of drafts.