Övre Rudasjön

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Övre Rudasjön
Photograph
As seen from the commuter railway station
Location of lake
Location of lake
Övre Rudasjön
LocationHaninge Municipality, south Stockholm County
Coordinates59°10′8.94″N 18°08′2.30″E / 59.1691500°N 18.1339722°E / 59.1691500; 18.1339722Coordinates: 59°10′8.94″N 18°08′2.30″E / 59.1691500°N 18.1339722°E / 59.1691500; 18.1339722
Primary inflowsTrylen, Nedre Rudasjön
Primary outflowsDammträsk, Drevviken
Basin countriesSweden
Surface area0.113 km2 (0.044 sq mi)
Average depth3.4 m (11 ft)[1]
Max. depth8.1 m (27 ft)[1]
Water volume0.386 km3 (313,000 acre⋅ft)[1]
Surface elevation34.5 m (113 ft)[2]
Islands0
SettlementsHaninge, Handen
References[1][2][3]

Övre Rudasjön (Swedish for "Upper Crucian carp Lake"), or Övre Rudan for short, is a lake in Haninge Municipality, 18 km (11 mi) south of central Stockholm, Sweden. Forming part of the Tyresån Lake System, its major inflow comes from lakes Nedre Rudasjön ("Lower Crucian carp Lake") and Trylen to the south, while its outflow passes over Dammträsk into Drevviken to the north.

The tall buildings of Handen commercial centre along the eastern shore of the lake contrast the dense forest of the on the opposite shore. The proximity to the commuter rail station at Handen, makes the lake easily accessible to a large number of people, while the forests surrounding it makes it attractive to open-air lovers. It is used for bathing in summers and cross-country skiing in winters.[4]

Compared to other lakes in the Tyresån Lake System, levels of phosphorus in the lake are moderate.[5]

Nutrition levels[6]
PTOT NTOT N/P-quota Chlor Sight depth Colour TOC pH Alk
17 ug/l 456 ug/l 27 6[clarification needed]a ug/l 3,8 m (max) 34 mg/l 8 mg/l 7,2 0,28 mekv/l

With are 28 species of vascular plants by the lake and 1 species of Stoneworth in it, the lake fauna is considered relatively rich in species.[2]

Gallery[]

  • Sweden. Stockholm County. Haninge Municipality. Handen 057.JPG
  • Sweden. Stockholm County. Haninge Municipality. Handen 048.JPG
  • Sweden. Stockholm County. Haninge Municipality. Handen 060.JPG

Notes[]

  1. ^ a b c d SMHI, p 131
  2. ^ a b c Södertörnsekologerna, p 8
  3. ^ Vattenmyndigheterna
  4. ^ Övre Rudan, Tyresåsamarbetet
  5. ^ Appendix 5 (PDF), Tyresåsamarbetet
  6. ^ Aktuellt näringstillstånd, Stockholm County Council

References[]

  • "Övre Rudasjön" (in Swedish). Vattenmyndigheterna. 2006-12-31. Retrieved 2009-01-17.
  • "Vattenväxter i sjöarna på Södertörn och i angränsande områden samt uppbyggnad av en sjödatabas" (PDF) (in Swedish). Södertörnsekologerna. 2001. Archived from the original (PDF) on 2007-10-07. Retrieved 2009-01-17.
  • "Bilaga 5: Klassning av sjöarnas fosforhalt" (PDF) (in Swedish). Tyresåsamarbetet. 1999. Retrieved 2009-01-17.[permanent dead link]
  • "Övre Rudan" (in Swedish). Tyresåsamarbetet. Retrieved 2009-01-17.[dead link]
  • "Sjödjup och sjövolym" (PDF) (in Swedish). Swedish Meteorological and Hydrological Institute. 1999-10-29. Retrieved 2009-01-17.[dead link]
  • "Aktuellt näringstillstånd - Sjöar" (PDF) (in Swedish). Stockholm County Council. 2005-09-10. p. 4. Archived from the original (PDF) on 2006-05-12. Retrieved 2009-01-17.


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