Frösjön

Frösjön is a lake in

Södermanland Södermanland ( ), locally Sörmland, sometimes referred to under its Latinisation of names, Latinized form Sudermannia or Sudermania, is a Provinces of Sweden, historical province (or ) on the south eastern coast of Sweden. It borders Österg� ...

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

, which straddles the boundary between

Gnesta Municipality Gnesta Municipality () is a municipality in Södermanland County in southeast Sweden. Its seat is located in the town of Gnesta, with some 5,000 inhabitants. The present municipality was created in 1992, when Nyköping Municipality (of which it ...

and

Stockholm Municipality Stockholm Municipality () or the City of Stockholm () is a municipality in Stockholm County in east central Sweden. It has the largest population of the 290 municipalities of the country, but one of the smallest areas, making it the second most ...

. It is 5.8 meters deep and has a surface area of 3.46

square kilometre The square kilometre (square kilometer in American spelling; symbol: km2) is a multiple of the square metre, the SI unit of area or surface area. In the SI unit of area (m2), 1 km2 is equal to 1M(m2). 1 km2 is equal to: * 1,000,000 squar ...

s. Lakes of Södermanland County Lakes of Stockholm County {{Stockholm-geo-stub