Lai da Nalps
|Lai da Nalps|
|Coordinates||701 437 / 165439|
|Data on the structure|
|Lock type:||Arch dam|
|Height of the barrier structure :||127 m|
|Height above the river bed :||122 m|
|Building volume:||594 000 m³|
|Crown length:||480 m|
|Operator:||Kraftwerke Vorderrhein AG / Ovra Electrica Rein Anteriur SA|
|Data on the reservoir|
|Altitude (at congestion destination )||1908 m above sea level M.|
|Water surface||91 ha|
|Reservoir length||2 km|
|Storage space||44 500 000 m³|
|Total storage space :||45 100 000 m³|
|Catchment area||22.3 km²|
|Design flood :||150 m³ / s|
The Lai da Nalps is a reservoir in Val Nalps in the canton of Graubünden in the municipality of Tujetsch . Together with the Lai da Sontga Maria and Lai da Curnera reservoirs , which are located in neighboring valleys, it forms a single water management system connected by pipes.
The reservoir can be reached from the Vorderrheintal . The last larger town is Sedrun . From this village a mountain road leads south to the lake, which is, however, subject to a general driving ban.
The road is not maintained in winter, so from December to May the Nalps weir can only be reached with a private cable car, which is open to everyone from July to October as far as the intermediate station Tgom (in winter on request).
The dam is monitored fully automatically by means of a system of permanently installed lasers and reflectors, also in order to detect possible deformations due to the construction of the Gotthard base tunnel , which runs under the dam, at an early stage.
- Lai da Nalps on schweizersee.ch
- swissdams.ch: Nalps
- Kraftwerke Vorderrhein AG on the Axpo website ( Memento from February 1, 2014 in the Internet Archive )
- Lakes in Switzerland: natural and storage lakes ( memento of 23 August 2010 in the Internet Archive ), Federal Office for the Environment FOEN, 2007