Luossajärvi

Luossajärvi

Luossajärvi
Location Kiruna
Coordinates 67°52′N 20°11′E / 67.867°N 20.183°E / 67.867; 20.183Coordinates: 67°52′N 20°11′E / 67.867°N 20.183°E / 67.867; 20.183
Basin countries Sweden
Surface area 2.4262 km2 (0.9368 sq mi)[1]
Surface elevation 499.1 m (1,637 ft)[1]

Luossajärvi is a small 260-acre (1.1 km2) lake in Kiruna in northern Sweden beside Luossavaara. The mining company LKAB has gradually emptied the southern part of the lake in 2007-8 to allow mining of iron ore in the peat bog.[2] These drained areas today consist of mostly marshes.

Environmental problems

The remaining portion of the lake has a chemical composition which shows the influence of mining activities. The lake has high concentrations of sulphate and nitrite. The high sulfate concentrations indicate extensive weathering processes of mainly carbonate and sulphorous materials.

Fishing

Fishing is practised on, and every winter ice fishing contests are held out on the ice. The name Luossajärvi derives from the rich number of trout that were in the lake. The original stocks consisted of perch, trout and pike, but these are now depleted to the point that now only perch naturally remain. The playground for the natural brown trout populations has disappeared due to the mining. However, other fish species have now been planted into the lake, including whitefish, grayling, char, rainbow trout and splake.

References

  1. 1 2 "Sjöareal och sjöhöjd" (PDF) (in Swedish). Swedish Meteorological and Hydrological Institute. 25 November 2009. Retrieved 8 October 2010.
  2. ↑ Dewatering of the southern part of Lake Luossajärvi, Kiruna, LKAB


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