The giant lake, coated with a layer of asphalt, will be fed by the melting waters of Tiefenbach, Petznerbach brook and Pirchlerbach brook. In future, this huge water reservoir will be an important pillar for the technical snow-making devices of the entire Sölden ski area. For the 40 hectares of glacier slopes (⅓ of all ski slopes at Rettenbach and Tiefenbach) which are covered with artificial snow-making systems, a water reservoir of only 240,000 cubic meters would be sufficient.
Therefore all the remaining capacities can be used by the Gaislachkogl and Giggijoch snow system. Thanks to the high altitude location at 2900 meters, the system can take full advantage of pumping effects. The remaining water feeds the already existing reservoir in the Rotkogel area. Both costs and energy reserves are saved.