Rottnan

Rottnan (Rotna in Norwegian) is a 110 km long river in Norway and Sweden. The river starts south of Hof Finnskog in Solør, Norway and discharges into lake Fryken at Rottneros in Värmland, Sweden.

Rottnan Rotna
River Rotna in Svullrya, Norway
Location
Country	Norway, Sweden
Physical characteristics
Source	Helveteskjelda
• elevation	521 m (1,709 ft)
Mouth	Fryken
• elevation	62 m (203 ft)
Length	110 km (68 mi)[1]
Basin size	960 km2 (370 sq mi)[1]
Discharge
• average	12.9 m3/s (460 cu ft/s)[2]
• maximum	63 m3/s (2,200 cu ft/s)[2]

Rottnan used to have three waterfalls close to the mouth in Fryken. Rottnafallet was the last and tallest of the falls with 26 meters height of fall. The waterfalls were built in 1927 for hydroelectric power. The name Rottnan comes from the old Swedish word Rotn which means "the roaring".

• 
  The waterfall Skarpedsfallet in Rottneros, Sweden
• 
  The waterfall Rottnafallet and the pulp mill Rottneros bruk in Rottneros, Sweden