10 Largest Rivers in Iceland by Volume
Olfusa river, 423 m³/s
Thjorsa river, 370 m³/s
Kudafljot river, 250 m³/s
Jokulsa a Dal river, 205 m³/s (before the establishment of Karahnjukar hydroelectric dam)
Jokulsa a Fjollum river, 183 m³/s
Tungnaa river, 175 m³/s
Jokulsa í Fljotsdal river (Lagarfljot), 130 m³/s (before the establishment of Karahnjukar hydroelectric dam)
Skafta river, 122 m³/s
Skeidara river, 110 m³/s
Heradsvotn river, 108 m³/s
Sogid river, 108 m³/s