box culvert in barcis artifical lake

alpine alps aprilis artificial barcis basin bed box cellina concrete conduit construction countryside culvert dam di dolomites dolomiti drained dry east eastern electricity embankment empty energy engineering environment eu europe european floor friulane friuli friulian friulivenezia giulia hills hydraulic hydroelectric italian italy january lago lake maintenance mountainous mountains mud natural north outdoor outdoors outside park pordenone power production rebar reinforced reservoir river rivulet routine rural silt site south southern stream travel union upkeep val valcellina valley venezia water winter work