Tyresö-Flaten is a lake in Tyresö Municipality, south of Stockholm, Sweden.

[2] Common fish species include perch, zander pike, lake trout, carp bream, and roach.

[3] When the water stagnates in late summer hydrogen sulfide and oxygen shortage occurs in the lake sediments.

However, levels of bacteria are low and the lake is considered safe for bathing.

This article about a location in Stockholm County, Sweden is a stub.