Albysjön, Tyresö

Albysjön
View northeast along Nyforsviken with Albysjön in the background.
Coordinates	59°13′41.1″N 18°17′4.2″E / 59.228083°N 18.284500°E / 59.228083; 18.284500Coordinates: 59°13′41.1″N 18°17′4.2″E / 59.228083°N 18.284500°E / 59.228083; 18.284500
Primary inflows	Tyresö-Flaten, Grändalssjön
Primary outflows	Kalvfjärden
Basin countries	Sweden
Max. depth	17 m (56 ft)
Water volume	0.790 km3 (640,000 acre·ft)
Surface elevation	13.7 m (45 ft)
Settlements	Tyresö
References

Albysjön (Swedish for "Lake of Alby") is a lake in Tyresö Municipality just south of in Sweden.

The small lake is the last lake in the Tyresån Lake System. Surrounded by green spaces and pastures, it is popular for bathing, angling, canoeing, and other open-air activities. Motor engines are prohibited.

Levels of phosphorus and nitrogen are very high. High amounts of phosphorus compounds causes dense Reed in the shallow bays of the lake. The reed was mechanically removed in 1975, but no follow-up action has taken place since. Lack of oxygen and hydrogen sulfide formation in sediments is a problem in summers. A brook causes high levels of lead and copper in Uddsbyviken, one of the northern bays, why samples are frequently taken in the brook. Samples taken in 1989 showed pollution is 10-20 times higher in the brook than normal levels for such water courses, which is however not unusual in and around Stockholm. Tests with biological filters will hopefully prove successful in lowering these levels.Algal bloom is relatively common in summers, but bathing is rarely prohibited.

Common fishes include Zander, Northern pike, and Perch.

There are 16 vascular plants by the lake.