| Roselend Dam | |
| Name Official: | Barrage de Roselend |
| Location Map: | France |
| Coordinates: | 45.6842°N 6.6217°W |
| Country: | France |
| Location: | Beaufort |
| Status: | O |
| Construction Began: | 1955 |
| Opening: | 1962 |
| Dam Type: | Arch-buttress dam |
| Dam Height: | 1500NaN0 |
| Dam Length: | 8040NaN0 |
| Dam Width Crest: | 30NaN0 |
| Dam Width Base: | 220NaN0 |
| Dam Volume: | 9450000NaN0 |
| Res Name: | Lac de Roselend |
| Res Capacity Total: | 1870000000NaN0 |
| Res Catchment: | 440NaN0 |
| Res Surface: | 3.20NaN0 |
| Res Elevation: | 15570NaN0[1] |
| Plant Name: | La Bâthie Power Station |
| Plant Coordinates: | 45.6447°N 6.4444°W |
| Plant Commission: | 1962 |
| Plant Type: | Conventional, diversion |
| Plant Hydraulic Head: | 12500NaN0[2] |
| Plant Turbines: | 6 x 91 MW Pelton-type |
| Plant Capacity: | 546 MW |
The Roselend Dam is an arch-buttress dam located 50NaN0 east of Beaufort in the Savoie department of the Rhône-Alpes region in south-eastern France. It is located just west and below the Cormet de Roselend mountain pass. The dam was designed by Coyne et Bellier and construction began in 1955. The reservoir began to fill in 1960, the power station was operational in 1961 and the dam complete in 1962. It was constructed for the primary purpose of hydroelectric power generation and supports the 546 MW La Bâthie Power Station.
The dam has a maximum height of 1500NaN0 and a length of 8040NaN0. It is 30NaN0 wide at its crest and 220NaN0 wide at its base. The dam has a structural volume of 9450000NaN0. Its reservoir, Lac de Roselend, can store 1870000000NaN0 of water and has a surface area of 3.20NaN0. Directly over the river bed is the dam's concrete arch with a 2150NaN0 radius. Flanking it on either side are concrete buttresses supporting the dam wall.[3] [4] Water from the dam is transferred west via a 130NaN0 long penstock to the underground power station in La Bâthie. At the power station, the water feeds six 91 MW Pelton turbine-generators. The difference in elevation between the power station and reservoir affords a hydraulic head (drop) of 12500NaN0.[5] Water from the St. Guerin Dam, 50NaN0 to the southwest at and Gittaz Dam, 4.50NaN0 to the northeast at, provide additional water to Lac de Roselend as well.[6] [7]