Lago di Lei
|Lago di Lei|
|Location||Lombardy (IT), Grisons (CH)|
|Primary outflows||Reno di Lei|
|Catchment area||46.5 km2 (18.0 sq mi)|
|Basin countries||Italy, Switzerland|
|Max. length||7.7 km (4.8 mi)|
|Surface area||4.12 km2 (1.59 sq mi)|
|Max. depth||133 m (436 ft)|
|Water volume||197 million cubic metres (160,000 acre⋅ft)|
|Surface elevation||1,931 m (6,335 ft)|
Lago di Lei is a reservoir in the Valle di Lei, powering the Hinterrhein storage power stations. The reservoir is almost entirely located in Italy, but the barrage was built on territory later assigned to Switzerland (municipality of Innerferrera, Grisons), while an equivalent territory north of the lake was assigned to Italy. 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 don't 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: all these waters flow to the Black Sea.
- "Convenzione tra la Confederazione Svizzera e la Repubblica Italiana concernente una modificazione di confine nella Valle di Lei" (PDF) (in Italian). Retrieved 21 May 2014.
- Hinterrhein storage power stations
- Kraftwerke Hinterrhein increase efficiency thanks to modern technology, article about renovation of power plant that included drainage of the Lago di Lei reservoir.
- Media related to Lago di Lei at Wikimedia Commons
- Valle di Lei in German, French and Italian in the online Historical Dictionary of Switzerland.
- KHR: Valle di Lei: Der Rhein entspringt auch in Italien[permanent dead link] (in German)
- KHR: Valle di Lei: il Reno è anche un po' italiano[permanent dead link] (in Italian)