 The dam is operated by Kraftwerke Hinterrhein.The waters of the lake are the only waters in Italian territory which end up in the North Sea, being part of the Rhine's drainage basin.Other waters of Italy that do not flow to the Mediterranean Sea are found in the valley of Livigno, valley of Sexten, Puster Valley east of Innichen, and most of the waters of the municipality of Tarvisio east of Sella Nevea