Tomasee
Lake in Switzerland
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The Tomasee 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.
It is the source of the Anterior Rhine and is deemed to be the official source of the Rhine. Wikipedia
Surface elevation: 7,694′
Inflow source: Rein da Tuma
Area: 6 acres
Coordinates: 46°37′57″N 8°40′20″E / 46.63250°N 8.67222°E
Location: Grisons
Outflow location: Rein da Tuma