Zalew Sulejowski
Encyclopedia
The Zalew Sulejowski is an artificial lake, a reservoir, in the Łódź Voivodeship built in the years 1969-1974 on the territories of three gmin
Gmina
The gmina is the principal unit of administrative division of Poland at its lowest uniform level. It is often translated as "commune" or "municipality." As of 2010 there were 2,479 gminas throughout the country...

: Tomaszów, Piotrków and Wolbórz. The aim of this reservoir was to supply a fresh drinking water to the city of Łódź and Tomaszów Mazowiecki
Tomaszów Mazowiecki
Tomaszów Mazowiecki is a town in central Poland with 67,159 inhabitants . Situated in the Łódź Voivodeship , it was previously part of Piotrków Trybunalski Voivodeship...

. At full capacity the reservoir contains up to 95 million m3 of water and has an average depth of 3.3m.

The reservoir is held back by a dam of concrete
Concrete
Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...

and earth with a length of 1,200 m and a height of 16 m. The shoreline perimeter extends to 58 km (36 mi).

Alongside its normal functions of retaining water and energy generation, the artificial lake created as a result of the dam is used for a variety of recreational purposes such as, but not limited to, windsurfing, kayaking and sailing.
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