Brandenburg, officially the State of Brandenburg, is a state in northeastern Germany. Brandenburg borders Poland and the states of Berlin, Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony. (Wikipedia. 2025. Brandenburg https://en.wikipedia.org/wiki/Brandenburg)
Polymictic lakes are holomictic lakes that are too shallow to develop thermal stratification. (Wikipedia, 2024. Polymictic lake https://en.wikipedia.org/wiki/Polymictic_lake)