Lai da Ova Spin

The Lai da Ova Spin ( also Lai dad Ova Spin, Romansh in the idiom Vallader for Spinbachsee, pronunciation [ laidɐ ( d) ɔ ː vɐ'ʃpin ] ) is a reservoir on the territory of the municipality Zernez in the Swiss canton of Graubünden. The dam was built in 1968 and is 73 meters high. The power plant was put into operation in 1970.

Name

The name derives from the Bach Ova Spin (formerly also Ova d' spin), the sideways flows into the lake in the back third. The Ova Spin rises on the southern slopes of the Piz Laschadurella into two branches, the Ova Spin Dadoura (translated Front spinning Bach) and Ova Spin Dadaint (translated Rear Spin Bach).

Grammatically correct spelling is Lai dad Ova Spin, but the official spelling of the Switzerland National Map is Lai da Ova Spin.

Cadastral Surveying the canton of Grisons referred to the lake as Spoel reservoir.

Occasionally, the names reservoir Praspöl and Lai are used as Praspöl. However, they refer to a dam project that in 1919 approximately at the site of today Lai da Ova Spin was planned with about four times the water Volumenen, but later never realized. The term refers to the corridor designation Praspöl at the upper end of today Lai da Ova Spin (literally Spöl meadow).

Weiler Ova Spin

Same as the stream is called a hamlet on the Ofenpassstrasse, located 250 meters above the lake. The hamlet is linked with the post bus approximately every two hours to the Swiss public transport network. In the summer house two houses of the Friends of Nature Switzerland up to 36 guests. Open all year round is also a dormitory with 20 beds.

Below the hamlet Ova Spin, partially, partly under the present lake shore line, the caves of Ova Spin (Find Romanesque Cuvels dad Ova Spin or Cuvels da l' Ova Spin ). During the Neolithic and the Bronze Age, these caves were used as a resting place. Among other things, a long bone has been with a flint splinter found during excavations. Elsewhere also bones of beef and pork were found. In the deeper caves, which were pressured by flooding in 1968 under the shoreline, no Neolithic traces were found.

Energy

The Lai da Ova Spin is a balancing pool: With pump water can be highly promoted to the Lago di Livigno when needed.

Two Francis pump- turbines generate total 50 MW. The system is monitored from the central control center in Pradella / Scuol.

The energy transport by Pradella is via a 220 kV line.

Supply and tunnels composite

The lake is naturally fed by Spoel ( main tributary of the Lago di Livigno ) of the Ova Spin and the Ova dal Fuorn.

On the other hand, a 15 km long tunnel water from the Inn as the crow flies 12.5 miles away S- chanf into the lake. This version is only 20 m higher than the Lai da Ova Spin, which corresponds to a very low tunnel slope. A lesser amount of water also comes from the Ova da Tantermozza, which is supplied by the same studs. The water of this tunnel flows visible on the left side of the lake about 100 m away from the dam into the lake.

Another tunnel diverts water from Lai da Ova Spin, 18 km away from work Pradella at Scuol.

Nature

The lake and the Ova Spin forming the boundary of the Swiss National Park, the posterior third of the lake is therefore in the park area.

The lake has trout, which are also fished.

Military History

The road to the hamlet Ova Spin was protected by both the First World War and the Second World War with military bunkers and is valued because of the idiosyncratic camouflage ( medieval castle and crag ) as "the most beautiful dam site Graubünden ».

Furnace mountain railway

The 1898 planned, but never realized furnace mountain railway could also be used on the way from Zernez to the summit tunnel the Spölschlucht. You would then follow today the right bank of Lai Ova Spin.