Frauenau is a municipality in the district of Regen, in Bavaria, Germany. It is known for its artificial lake, which is used as a water supply of the area around Deggendorf and Passau.
Wikipedia https://en.wikipedia.org/wiki/Frauenau
Official Website https://www.frauenau.de/
Coordinates 48°59'22.644" N 13°18'3.555" E