Lake Luzzone

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Lake Luzzone
Location: Canton Ticino Switzerland Mountain group: Adula AlpsCanton of TicinoCanton of Ticino  SwitzerlandSwitzerland 
Tributaries: Ri di Cavalasca, Ri di Larciöö, Ri di Scaradra, Ri di Mutarasc.
Drain: Brenno di Luzzone
Lago di Luzzone (Adula Alps)
Lake Luzzone
Coordinates 717 934  /  158513 coordinates: 46 ° 34 '3 "  N , 8 ° 58' 37"  O ; CH1903:  seven hundred and seventeen thousand nine hundred thirty-four  /  158513
Data on the structure
Lock type: Arch dam
Construction time: 1963/1998
Height of the barrier structure : 225 m
Height above the river bed : 195 m
Height of the structure crown: 1609  m above sea level M.
Building volume: 1 330 000  m³
Crown length: 600 m
Operator: Officine idroelettriche di Blenio SA
Data on the reservoir
Altitude (at congestion destination ) 1606  m above sea level M.
Water surface 1.27 km²
Reservoir length 3.1 km
Storage space 87 600 000  m³
Total storage space : 88 000 000  m³
Catchment area 36.74 km²
Design flood : 103 m³ / s
Map Lago di Luzzone.png
Detailed map

The Lago di Luzzone ( German  Luzzonesee ) is a reservoir in the Swiss canton of Ticino at 1606  m above sea level. M. in the Adula Alps .

Location and water flow

The lake is located at the upper end of the Blenio Valley in the area of ​​the municipality of Blenio . The dam can be reached via a serpentine road in the area of ​​the village of Ghirone. The reservoir and the associated power plants are operated by Blenio Kraftwerke AG, based in Locarno .

The water from the reservoir is first processed in the Olivone headquarters, after which it is directed to the Malvaglia reservoir to be used to generate electricity again in the Biasca power plant.


The dam in 1977, before adding another 17 meters

The Luzzone arch dam was completed in 1963; 1997-1998 it was increased by 17 meters. The top of the wall is now at 1609  m , the deepest drop in the lake level to 1435  m . The wall was planned by Alfred Stucky . In front of the wall is a covered landfill.

To build the wall, the capacity of the access road to Blenio had to be increased. For this purpose, the street above the old one was built by the Galleria della Töira.

A cable car is also available for winter service.

Climbing wall

In 1999, the longest artificial climbing route in the world was attached to the dam wall with 165 meters (five pitches ) and over 650 climbing holds and hooks . The difficulty for the last, slightly overhanging part of the route is given as 6 + / 7− on the UIAA scale . The wall can only be used against payment of a fee and a deposit.


Web links

Commons : Lago di Luzzone  - Collection of images, videos and audio files

Individual evidence

  1. Position and altitude according to Swisstopo (national map of Switzerland)
  2. Info from WebArchive, accessed on April 1, 2020
  3. Alpine Club Munich (PDF; 198 kB)
  4. Info from WebArchive, accessed on April 1, 2020