Fatburen

Fatburen is a small lake in Tyresö Municipality, south-east of central Stockholm, Sweden. It is the last and easternmost lake within the Tyresån Lake System.

Fatburen
Fatburen
Location	Stockholm
Coordinates	59°13′58″N 18°17′30″E
Primary inflows	Albysjön
Primary outflows	Kalvfjärden
Basin countries	Sweden
Surface area	0.030 km2 (0.012 sq mi)[1]
Average depth	1.9 m (6 ft 3 in)[2]
Max. depth	5.0 m (16.4 ft)[2]
Water volume	0.898 km3 (728,000 acre⋅ft)[2]
Surface elevation	13.7 m (45 ft)[1]
Settlements	Tyresö
References	[1][2]

The lake is roughly triangular in shape with its inflow from Albysjön in the southern corner, and its outflow to Kalvfjärden in the north-eastern corner. It is separated from Albysjön by the peninsula Rävnäset, a municipal nature reserve covering 27 ha.[3] It contains a wide range of rare species and is together with the nature and park surrounding Tyresö Palace one of the best locales for bats.[4] South-east of the lake is the residential area Solberga.

In summers, the lake is part of a popular walk for visitors attracted by the Tyresö Palace and its surroundings.[5] In winters, the lake is popular for ice fishing.[6]

There are 21 species of vascular plants by the lake which in itself contains 9-13 aquatic plants, a relatively high biodiversity within the lake system.[1] Common fishes include Perch, Pike, and Zander.[7]

Notwithstanding its eutrophication, the presence of Stoneworts in Fatburen indicates the waters have a relatively high visibility, which, considering it is the last lake in the lake system, is surprising.[4]