| Uldalsåna | |
|---|---|
| Hanefoss reservoir | |
  Uldalsåna Location of the lake Show map of Agder Uldalsåna Uldalsåna (Norway) Show map of Norway | |
| Location | Birkenes and Froland, Agder |
| Coordinates | 58°32′38″N 08°18′15″E / 58.54389°N 8.30417°E / 58.54389; 8.30417 |
| Primary inflows | Rettåna and Skjeggedalsåna |
| Primary outflows | Herefossfjorden |
| Basin countries | Norway |
| Max. length | 4 kilometres (2.5 mi) |
| Max. width | 750 metres (2,460 ft) |
| Surface area | 3 km2 (1.2 sq mi) |
| Shore length1 | 34.34 kilometres (21.34 mi) |
| Surface elevation | 149 metres (489 ft) |
| References | NVE |
| 1 Shore length is not a well-defined measure. | |
Uldalsåna is a lake on the border of the municipalities of Birkenes and FrolandinAgder county, Norway. It is part of the Tovdalselva river drainage basin. On the southeastern end of the lake, there is a hydroelectric dam which releases water into the waterfall, Hanefoss, on its way down to the lake Herefossfjorden near the village of Herefoss. The lake is fed by the rivers Rettåna and Skjeggedalsåna. The lake Nystølfjorden flows into the river Skjeggedalsåna.[1][2]
