__NOTOC__ The Sihlsee (in English sometimes called ''Lake Sihl'') is an

artificial lake A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

in the

Swiss Swiss may refer to: * the adjectival form of Switzerland * Swiss people Places * Swiss, Missouri * Swiss, North Carolina *Swiss, West Virginia * Swiss, Wisconsin Other uses *Swiss-system tournament, in various games and sports *Swiss Internation ...

canton of Schwyz The canton of Schwyz (german: Kanton Schwyz rm, Chantun Sviz; french: Canton de Schwytz; it, Canton Svitto) is a canton in central Switzerland between the Alps in the south, Lake Lucerne to the west and Lake Zürich in the north, centred on ...

, near the town of Einsiedeln. The lake was created by damming the river

Sihl The Sihl is a Swiss river that rises near the Druesberg mountain in the canton of Schwyz, and eventually flows into the Limmat in the centre of the city of Zürich. It has a length of , including the Sihlsee reservoir, through which the river f ...

and flooding a section of the upper

Sihl Valley Sihl Valley (German: ''Sihltal'') is a river valley and belongs to the Zimmerberg-Sihltal region located in the district of Horgen in the canton of Zurich, Switzerland. Commonly ''Sihltal'' is used as the name of the Lower Sihl Valley, i.e. the are ...

. The lake feeds the ''Etzelwerk'' power station, which is located to the north-east in Altendorf on the upper section of

Lake Zürich __NOTOC__ Lake Zurich ( Swiss German/Alemannic: ''Zürisee''; German: ''Zürichsee''; rm, Lai da Turitg) is a lake in Switzerland, extending southeast of the city of Zürich. Depending on the context, Lake Zurich or ''Zürichsee'' can be used to ...

(the ''Obersee'') and which supplies electricity to the

Swiss Federal Railways Swiss Federal Railways (german: link=no, Schweizerische Bundesbahnen, ''SBB''; french: link=no, Chemins de fer fédéraux suisses, ''CFF''; it, Ferrovie federali svizzere, ''FFS'') is the national railway company of Switzerland. It is usuall ...

(SBB). Its concrete

dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use ...

is high and m long. The lake is the largest artificial lake of Switzerland in terms of surface with a maximum length of and maximum width of . The maximum depth is , and the lake has an approximate volume of . The power plant project started in 1932. A concrete dam and two viaducts over the lake were built before 1937 when the valley was flooded. As a result 107 farms disappeared completely and 1762 persons had to leave their homes. A failure of the dam could lead, according to studies, to an high flood wave through the lower

reaching the Altstadt of the city of

Zürich Zürich () is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zürich. It is located in north-central Switzerland, at the northwestern tip of Lake Zürich. As of January 2020, the municipality has 43 ...

, the biggest city in Switzerland, within 2 hours. This threat has led the City of Zürich to develop, publish and test evacuation plans for the affected areas of the city, and especially the area around

Zürich Hauptbahnhof railway station , neighboring_municipalities = Adliswil, Dübendorf, Fällanden, Kilchberg, Maur, Oberengstringen, Opfikon, Regensdorf, Rümlang, Schlieren, Stallikon, Uitikon, Urdorf, Wallisellen, Zollikon , twintowns = Kunming, San Francisco Züric ...

Gallery

File:Sihlsee Fluebrig.jpg, Sihlsee with

Fluebrig The Fluebrig (2,098 m) is a mountain massif of the Schwyzer Alps, located east of Unteriberg in the canton of Schwyz The town of Schwyz (; french: Schwytz; it, Svitto) is the capital of the canton of Schwyz in Switzerland. The Federal C ...

behind File:Sihlsee IMG 2807.JPG, The northern shore

References

External links

*
Information about the Sihlsee
{{Authority control Lakes of the canton of Schwyz Reservoirs in Switzerland LSihlsee Sihl