Alatsee is a meromictic lake in Ostallgäu, Bavaria, Germany.

Alatsee
Alatsee is located in Bavaria
Alatsee
Alatsee
LocationOstallgäu, Bavaria
Coordinates47°33′39″N 10°38′22″E / 47.56083°N 10.63944°E / 47.56083; 10.63944
Typemeromictic
Primary inflowsgroundwater
Primary outflowsFaulenbach
Basin countriesGermany
Max. length490 m (1,610 ft)
Max. width290 m (950 ft)
Surface area12.00 ha (29.7 acres)
Average depth15.3 m (50 ft)
Max. depth32.1 m (105 ft)
Water volume1,840,000 m3 (65,000,000 cu ft)
Shore length11.3 km (0.81 mi)
Surface elevation868.0 m (2,847.8 ft)
1 Shore length is not a well-defined measure.

At an elevation of 868 metres (2,848 ft), its surface area is 12 hectares (30 acres).

Many divers have died or disappeared mysteriously in the lake due to the toxicity of the organisms living in the lake. These organisms create the "blood cloud " that occurs quite abundantly throughout the year.

This lake supposedly holds Hitler's gold.