Wikipedia –Müggelsee – Lake
The first uses of the word component “Müggel” are, according to Gerhard Schlimpert in the “Codex diplomaticus Brandenburgensis”, in 1394 as “den Tyns in der Miggel” and in 1487 as “von der Miggelseh”. The etymology remains unclear. The traditional derivative from Common Slavonic mogyla = “grave, grave hill, earth hill” is rejected by Schlimpert as not durable. A pre-Slavonic, Germanic origin from a Proto-Indo-European root is more probable: migh-, mighla = “fog, cloud“: compare Dutch miggelen = “drizzle” belongs. Analyses say that the word component “heim” in the name was brought around 1750 by settlers from the Palatinate from their homeland Odernheim, according to Schlimpert.