Muttsee
Is extended to Pumpspeichersee
The Muttsee is a mountain lake at the back of Glarus in Switzerland on the plateau Mutten. At an approximate expansion from 1000 to 400 meters, it has an area of 42 hectares. The lake is located at the junction of Linthal - Tierfehd over the Kistenpass to Brigels. He is in a endorheic, 2.95 -square-kilometer basin by high mountains such Nüschenstock ( 2'893 m above sea level. M. ) to the west, Rüchi ( 2'849 m above sea level. M. ) in the northwest, Ruchi (3 ' 107 m above sea level. M. ) in the east and Muttenstsock ( 3,089 m above sea level. M. ) is surrounded in the southeast. Southwest to Limmerensee opens the arena, only the Hüenderbüel ( 2'469 m above sea level. M. ) is completed here.
The former natural karst lake was included at the beginning of the 1960s in the power plant operation of power plants Linth Limmern as upper basin. At that time, an earth dam was built at Muttsee. Its water is used as storage for the production of peak current. If he is completely full, it has the lake level to 2'446 m above sea level. M.. , This basin is thus the highest storage basin in Europe. Its water is directed into the Limmerensee. The power plant has a capacity of Muttsee 4.4 MW and is located in a rock cavern, from which flows off the water in the Limmernsee.
As part of the ongoing expansion project Linthal 2015, the volume of the lake today around 9 million will be raised to 25 million cubic meters. The construction of a 1000 m long and up to 35 meter high gravity dam in the lake level is raised by 28 meters to a water level of 2'474 m above sea level. M. The dam will be the longest in Europe. The start-up of new pumped storage plant is planned in 2015/2016.
The lake is registered in the cantonal landscape directory as a landscape of regional significance. In the karst area of Muttenalp are - besides the Muttseehöhle and Muttseehütte - are several other small lakes, most of which are distributed by the southwest Muttsee over the Hüenderbüel. The largest neighbor, the upper lake, however, is north of Muttsee on 2'475 meters above sea level. M. He is the only lake on the Muttenalp, which is connected to the Muttsee: Its outflow feeds the Muttsee.