geo.wikisort.org - Reservoir

Mattmark dam is a reservoir in the Saas Valley of the Canton of Valais, Switzerland. The Mattmark dam was built from 1960 to 1965. The lake's surface area is 1.76 km² (0.68 sq mi).

Mattmark dam
Mattmark dam Show map of Canton of Valais Mattmark dam Show map of Switzerland Mattmark dam Show map of Alps
Location	Saas Valley, Valais
Coordinates	46°2′17″N 7°57′36″E
Type	reservoir
Catchment area	37.10 km2 (14.32 sq mi)
Basin countries	Switzerland
Max. length	3.2 km (2.0 mi)
Surface area	1.76 km2 (0.68 sq mi)
Max. depth	93 m (305 ft)
Water volume	10.5 million cubic metres (8,500 acre⋅ft)
Surface elevation	2,197 m (7,208 ft)

The lake lies at a height of 2,197 metres above sea level, between the massifs of the Rimpfischhorn and Stellihorn. The highest peak visible from the lake is the Strahlhorn (4,190 m).

Mattmark disaster

On August 30, 1965, 88 construction workers, 56 of them of Italian nationality, were buried under 2,000,000 m³ of ice and debris by a glacier collapse of the Allalin glacier.[1] The risk involved in constructing the accommodation barracks directly below the glacier tongue, which eventually broke off, was not taken into account. No other reservoir in Switzerland claimed so many victims during construction. Seven years after the accident, the Valais judiciary acquitted all 17 defendants, including engineers and managers of Elektrowatt and officials of the Swiss Accident Insurance Fund. In 2005, journalist Kurt Marti revealed that those responsible for the construction site knew about the dangers of the Allalin glacier and that the court ignored all incriminating facts in its decision.[2]

See also

• List of lakes of Switzerland
• List of mountain lakes of Switzerland

References

External links

• Kraftwerke Mattmark (in German and French)
• Images
• Media related to Mattmarksee at Wikimedia Commons

На других языках

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[de] Stausee Mattmark

Der Stausee Mattmark ist ein Stausee, der sich auf dem Gebiet der Gemeinde Saas-Almagell am südlichen Ende des Saastales im Bezirk Visp des Kantons Wallis in der Schweiz befindet. Der See wird von der Kraftwerke Mattmark AG zur Energieerzeugung genutzt. 1965 forderte ein Gletscherabbruch während des Baus 88 Tote.[5]

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- [en] Mattmarksee

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[it] Lago Mattmark

Il lago Mattmark (in tedesco Mattmarksee) è un bacino artificiale che si trova nella valle Saastal nel Vallese della Svizzera.

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[ru] Маттмарк

Маттмарк (нем. Mattmark) — высокогорное водохранилище, находящееся в долине Засталь швейцарского кантона Вале. Расположено на высоте 2197 метров над уровнем моря, между горными вершинами Римпфишхорн и Штральхорн. Объём составляет 100 миллионов кубических метров. Высота плотины — 115 метров.

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