Simskardvatnet (Norwegian) or Sijdurrienjaevrie (Southern Sami) is a lake in the municipality of Hattfjelldal in Nordland county, Norway. It is the headwaters of the river Vefsna. The lake lies within Børgefjell National Park, just east of the municipal border with Grane.
Sijdurrienjaevrie (Southern Sami)
|Max. length||4 kilometres (2.5 mi)|
|Max. width||1.2 kilometres (0.75 mi)|
|Surface area||3.47 km2 (1.34 sq mi)|
|Shore length1||14.77 kilometres (9.18 mi)|
|Surface elevation||877 metres (2,877 ft)|
|1 Shore length is not a well-defined measure.|