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| Ringedals Dam | |
|---|---|
 Ringedals dam, Skjeggedal Pumping Station and Tysso II | |
| Location | Ringedalsvatnet, Norway |
| Construction began | 1909 |
| Opening date | 1918 |
| Dam and spillways | |
| Type of dam | Gravity dam |
| Height | 33 metres (108 ft) |
| Length | 521 metres (1,709 ft) |
| Width (crest) | 4 metres (13 ft) |
| Width (base) | 21.5 metres (71 ft) |
| Reservoir | |
| Total capacity | 426 million m3 |
Ringedals Dam is a gravity dam by Ringedalsvatnet at Tyssedal in Odda municipality in the county of Hordaland, Norway. The dam was built in stages between 1909 and 1918 in connection with the hydroelectric power plant in Tyssedal and the factories in Odda. When the dam was completed in 1918 it was one of Europe’s largest gravity dams with a reservoir capacity of 222 million m3. The dam is built in Cyclopean concrete with 30% large-sized stones (plums) and dressed on both sides with approximately 20,000 m² of hand-cut granite stone, the largest of its kind in Norway. The dam is crowned by the date and initials of managing director Ragnvald Blakstad and topped with merlons in Neo-Romanesque style.
Ringedalsvatnet is today the reservoir of Oksla Hydroelectric Power Plant at Sørfjorden. The reservoir has a capacity of 426 million m³ and the power station is every year producing approximately 900 GWh.