Slezská Harta Dam was officially launched in 1987, but in 1986, some buildings had already been built and an extensive geological survey of the entire site facilities had previously been carried out.
The construction of the water project represented a big change in the natural, technical, and also social conditions. Before beginning construction, it was necessary to remove bushes, dig up all crops, and demolish and dispose of all buildings and facilities, as well as ensure the construction of replacement flats, houses and facilities for the displaced residents, a hotel complex for dam builders, and the relocation of the pipeline, telephone and power lines. It was also necessary to ensure the construction of a new pumping station for water treatment plants in Leskovac nad Moravicí including the raw water. New service roads around the dam were needed, including new sections of roads and bridges to deliver the supply of construction materials and mining showdown pits along the Moravice riverbed in Leskovac and Karlovice. The total cost of the construction of the Silesian Harta water works (including finance for the purchase of land, houses and other property in the flood) amounted to 2.5 billion, of which the works have resulted in 1.5 billion. The originally scheduled date for completion for the work had been the year 1992, but due to societal changes in 1989, doubts about the continuation of building because of the lack of funds pushed the date back five years later. The ribbon-cutting ceremony was held on November 27, 1997 in the presence of Agriculture Minister Josef Lux and the CEO of the Odra basin, Jiří Šašek.