Hydro-ecological measures These measures ensure compliance with the provisions of the National Water Protection Plan and, at the same time, ensure that some of the most valuable habitats in the Alps are revitalised and saved for posterity. Restoration of the banks of the Schalderer brook The banks of the Schalderer brook near Varna were restored, creating a new recreation area which includes a footbridge, flat green areas, playgrounds for children, a stony pool for Kneipp water therapy and a 140-m path. Widening and improvement of the Isarco riverbed Near the Sterzinger Moos, 200 m of the Isarco riverbed were broadened by about 0.5 hectares (1.2 acres). This was done to create a non-consolidated island and restore the banks with natural tree vegetation. Further improvement of the Isarco river is planned between the Genauen disposal site and the Fortezza reservoir, with stone groynes to be built using massive boulders and groups of rocks to break up the river flow. About 6,500 m3 of rocks will be used. Transformation of waterways to make it easier for fish to pass • Dismantling of weirs in the Sill river in the municipality of Innsbruck • Transformation of the Navis brook • Creation of a fish ladder in the Gschnitz brook • Widening of the mouth of the Padaster brook Widening of rivers and creation of meadows • Widening of the Vizze brook to the Isarco river • Widening of the Sill at the Wolf portal Further measures • Creation of a geological nature trail in Campo di Trens • Construction of ponds for agricultural irrigation • Waterproofing of the Schrüttensee outlet • Construction of noise barriers along the existing railway line • Laying of underground power lines in Campo di Trens and Varna • Construction of underground waste collection sites 38 BRENNER BASE TUNNEL
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