Fyresvatn
| Fyresvatn | |
|---|---|
 | |
| Location | Fyresdal, Telemark |
| Coordinates | 59°06′N 8°12′E / 59.100°N 8.200°ECoordinates: 59°06′N 8°12′E / 59.100°N 8.200°E |
| Primary outflows | Fyreselv |
| Basin countries | Norway |
| Surface area | 49.63 km² |
| Max. depth | 377 m |
| Shore length1 | 63.41 km |
| Surface elevation | 279 m |
| 1 Shore length is not a well-defined measure. | |
Fyresvatn, (or Fyresvatnet), is the fifth deepest lake in Norway with a depth of 377 m.
It is located in Fyresdal municipality, part of Telemark county.
Fyresvatn belongs to the Arendal watershed, and discharges via the Fyreselv river into the Nidelva river, which flows into the Skagerrak at Arendal in the county of Aust-Agder.