Røsvatnet

Røsvatnet (Norwegian)
Reevhtse (Southern Sami)
Røssvatnet (Norwegian)
Interactive map of the lake
LocationHemnes Municipality and Hattfjelldal Municipality, Nordland
Coordinates65°43′31″N 13°58′26″E / 65.7253°N 13.9739°E / 65.7253; 13.9739
Typedammed lake or reservoir
Primary inflowsBessedørelva, Bjørkåselva, Gåsvasselva, Hanskvasselva, Jierhtejohke, Krutåga, Laukskardelva, Leirelva, Lilleelva, Raudvasselva, Speelhtejohke, Steikvasselva, Stikkelvikelva, Storelva, Sørdalselva and Tvillelva
Primary outflowsRøssåga
Catchment area855 km2 (330 sq mi)
Basin countriesNorway
First flooded1957
Max. length37 km (23 mi)
Max. width18 km (11 mi)
Surface area218.61 km2 (84.41 sq mi)
Average depth68 metres (223 ft)
(66.5 m before damming)
Max. depth240 metres (790 ft)
(231 m before damming)
Water volume14.80 km3 (3.55 cu mi)
(12.60 km3 before damming)
Shore length1256.37 km (159.30 mi)
Surface elevation383 m (1,257 ft)
(374 m before damming)
IslandsRøssvassholmen
ReferencesNVE
1 Shore length is not a well-defined measure.

Røsvatnet (Norwegian) or Reevhtse (Southern Sami) is a lake and reservoir in Hattfjelldal Municipality and Hemnes Municipality in Nordland county, Norway. It has been the site of human occupation since the Stone Age. Its area of 219 square kilometres (85 sq mi) makes it the second largest lake in Norway by surface area. Without the dam which has regulated the lake since 1957, it would be 190 square kilometres (73 sq mi) and the third largest lake in Norway. Its depth is 240 metres (790 ft), its volume is estimated at 15 cubic kilometres (3.6 cu mi), and its surface elevation is 374 metres (1,227 ft) above sea level.