]> 2026-04-14T03:41:57+00:00 Case study:Lower Aurino river: Gatzaue riverbed widening 500 en Approved 0.5 - 2 m 10 - 50 m creation of new branches Yes No Yes No change No Invertebrates,No,Yes,No,Yes,Yes,No change Invertebrates Yes Creation of new channel Channel widening Provincia Autonoma di Bolzano Provincia Autonoma di Bolzano No Yes Yes false Yes No Yes Yes No Improvement Yes No Channel pattern/planform,No,Yes,Yes,No,Yes,Improvement Connection to groundwaters,Yes,Yes,No,Yes,No,Improvement Structure & condition of riparian/lake shore zones,No,Yes,No,No,No,Improvement Channel pattern/planform Connection to groundwaters Structure & condition of riparian/lake shore zones No Yes Foto4 Gatzaue2002.JPG Foto5 Gatzaue2009.JPG Foto6 Gatzaue2009.JPG Aerial view before works Aerial view after works The riverbed after the works No 46.848676996943,11.955814176752 Caterina Provincia Autonoma di Bolzano Ghiraldo 10 - 100 m³/s creation of new branches,Floodplain reconnection,Creation of new channel, Channel widening, Fish habitat restoration,,,Citizen participation in the restoration project,, Monitoraggio campana.pdf Yes No No No change Yes Riparian vegetation,No,Yes,Yes,No,No,No change No Riparian vegetation Fish habitat restoration 1652 Project picture.JPG 2003 2452640.5 Complete The Aurino river is a typical Alpine watercourse (basin Area 630 km2, average discharge in summer 30-50 m3/s) affected in the past by gravel extraction, construction of bank defences along part of its course and a major reduction of sediment load from upstream, due to weirs and other protection measures in most tributaries. This determined channel incision, reduction of riverbed width, alteration of morphological structures and dynamics and as a consequence reduced connection with the floodplain, lowering of the groundwater level and loss of riparian habitats (especially hygrophilic riparian forests of Alnus incana). A major effect was also a reduced flood retention capacity, and its recovery by reverting the incision process was one of the main drivers, together with biodiversity increase, to implement a catchment scale restoration scheme. This has been carried out, step by step, for more than a decade and further measures are foreseen. The three interventions in Gatzaue in 2005, 2009 and 2011 included removing a total of 50000 m3 of gravel from the formerly disconnected floodplain, widening the riverbed by approximately 35 m and, in order to stop incision, the construction of a ramp in 2005 and, in 2009 and 2011, the reintroduction in the same stretch of part of the gravel excavated from the river banks. A monitoring activity was implemented to study the geomorphological and biological effects of the project. Works include: Creation of new lateral habitat for fishes,amphibians and birds (alcedo atthis). Lower Aurino river: Gatzaue riverbed widening lower aurino river: gatzaue riverbed widening Yes 1000 Floodplain reconnection Gatzaue gatzaue Citizen participation in the restoration project Flood risk management Habitat and biodiversity Hydromorphology Social benefits Spatial planning 195 100 - 500 k€ 03SS3N D_c Torrente Aurino 2011-01-04Z 2455565.5 2012-09-20T22:19:25Z 2456191.4301505 2019-01-02T15:11:49Z 2458486.133206 Lower Aurino river: Gatzaue riverbed widening 500 1 list 3 [[Category:Case study]] [[Parent project::Case study:Lower Aurino river: Gatzaue riverbed widening]] Lower Aurino river: Gatzaue riverbed widening# QUERY1bd239c9717ce820a94b6b373339ed64 Case study:Lower Aurin river: Gatzaue riverbed widening 500 en Lower Aurin river: Gatzaue riverbed widening REDI 102 en REDI