Danube Rivers Morphology and Revitalization - DANUBEPARKS

456to improve longitudinalconnectivity/continuityto improve river bed depth andwidth variationto improve in-channel structureand substrate3.3 Modify hydropeaking3.4 Increase flood frequency and duration in riparian zones or floodplains3.5 Reduce anthropogenic flow peaks (e.g drainage, urban run-off)3.6 Favour morphogenic flows3.7 Shorten the length of impounded reaches3.8 to link flood reduction with ecological restoration ('ecoflood')3.9 to manage aquatic vegetation4.1 Remove barrier (e.g weir, dam)4.2 Install fish pass/bypass/side channel for upstream migration4.3 Facilitate downstream migration4.4 Modify culverts, syphons, piped streams (e.g. daylighting)4.5 Manage sluice and weir operation for fish migration4.6 Fish-friendly turbines and pumping stations5.1 Remeander water courses5.2 Widen water courses5.3 Shallow (i.e. opposite to deepen) water courses5.4 Allow/increase lateral channel migration or river mobility5.5 Narrow water courses5.6 Create low flow channels in over-sized channels6.1 Initiate natural channel dynamics to promote natural regeneration6.2 Remove sediments (e.g. eutrophic, polluted, fine)6.3 Modify aquatic vegetation ('weed') maintenance6.4 Introduce large wood6.5 Add sediments (gravel, sand)6.6 Remove bank fixation6.7 Recreate gravel bar and riffles6.8 Remove or modify in-channel hydraulic structures (e.g. groynes, deflectors)6.9 Reduce impact of dredging7 to improve lateral connectivity 7.1 Lower river banks or floodplains to enlarge inundation and flooding