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View over Lygnern.JPG
LocationHalland County, Västra Götaland County, Sweden
Coordinates57°28′36″N 12°20′22″E / 57.47667°N 12.33944°E / 57.47667; 12.33944Coordinates: 57°28′36″N 12°20′22″E / 57.47667°N 12.33944°E / 57.47667; 12.33944
Primary outflowsRolfsån
Basin countriesSweden
Max. length20 km (12 mi)[1]
Max. width2.5 km (1.6 mi)[1]
Surface area33 km2 (13 sq mi)[2]
Max. depth50 m (160 ft)[1]
Surface elevation15 m (49 ft)[2]
SettlementsFjärås kyrkby, Sätila

Lygnern is a lake in the municipalities of Kungsbacka and Mark, western Sweden. With an area of 33 km², it is the largest lake in Halland County. Its main outflow is Rolfsån, which in turn empties out into the Kungsbacka Fjord.

The lake serves as a source of drinking water for Kungsbacka. In 2006, it was nominated as the cleanest lake in Sweden, as 98% of the surveyed residents of the municipality were satisfied with the water quality.[3]


Ten fish species have been found in the lake, which is particularly rich in pike, trout and European perch.[1]


  1. ^ a b c d e "Lygnern" (in Swedish). Lygnerns Sportfiskeklubb. Retrieved 26 December 2010.
  2. ^ a b c "Lygnern". Nationalencyklopedin (in Swedish). Retrieved December 2010. Check date values in: |accessdate= (help)
  3. ^ "Välj kranvatten" (in Swedish). Kungsbacka Municipality. Archived from the original on 19 July 2011. Retrieved 26 December 2010.