| Tomasee | |
|---|---|
| Lai da Tuma | |
 | |
  Tomasee  Tomasee  Tomasee  Tomasee | |
| Location | Grisons |
| Coordinates | 46°37′57″N 8°40′20″E / 46.63250°N 8.67222°E |
| Primary inflows | Rein da Tuma |
| Primary outflows | Rein da Tuma |
| Basin countries | Switzerland |
| Surface area | 2.5 ha (6.2 acres) |
| Surface elevation | 2,345 m (7,694 ft) |
The Tomasee (Romansh: Lai da Tuma or Lag da Toma) is a lake at the northern face of Piz Badus, above the village of Tschamut in Grisons, Switzerland. Its surface area is 2.5 ha (6.2 acres).
It is the source of the Anterior Rhine and is deemed to be the official source of the Rhine (the source of the Posterior Rhine is above Hinterrhein, Switzerland, at 46°29′56″N 9°03′54″E / 46.499°N 9.065°E).
It is possible to reach the lake on a path from Oberalp Pass, suitable for most walkers although still a mountain trail.[1]
Notes
External links
Media related to Tomasee at Wikimedia Commons
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