--- title: Fish ladder in Au an der Donau url: "https://www.donauregion.at/en/oesterreich-poi/detail/430039025/fish-ladder-in-au-an-der-donau.html" description: "In Au an der Donau (municipality of Naarn, Upper Austria), Austria's largest fish ladder, which is designed as a near-natural bypass, was built as part of the construction of the flood dam. It serves to ensure fish passability, supplemented by a 13-metre-high observation tower and the walk-through \"Fish Doni\" as an attraction for cycle tourists.Here are the most important details about the fish ladder in Au/Danube:Location & function: the fish ladder/fish migration aid is located in Au/Donau in Machland and connects the Danube as a bypass arm to allow fish to migrate.Observation tower: A 13 meter high tower offers views of the Danube, the Machland, the Mühlviertel and the Lower Austrian Alps.Walk-in fish \"Doni\": A sculpture made of galvanized sheet metal in the shape of a fish with an open mouth is a highlight for visitors and cyclists on the Danube Cycle Path.Surroundings: The area is part of the Aulehrpfad in Naarn, which offers insights into the habitat of the Danube floodplains.It was built as part of flood protection measures." date: 2015-07-24 modified: 2026-03-05 --- # Fish ladder in Au an der Donau Fish ladder in Au an der Donau ================================ Au an der Donau, Oberösterreich, Österreich ![](https://assets.tourdata.at/260x195/394093/831576B13A7983EE8F9D92F89FEE5E83A60238E06A7A71BC9F7E2F45D3C9C369/dsc02897-jpg.jpg) ![](https://assets.tourdata.at/260x195/394091/67FBB0C5E24AB10BB70AA9505C091E6762EE017070FC3AAFDA9D0DF36D07DE76/20170930naarn-3-jpg.jpg) © Open copyright © Marktgemeinde Naarn Close copyright [ ![](https://assets.tourdata.at/x550/394093/831576B13A7983EE8F9D92F89FEE5E83A60238E06A7A71BC9F7E2F45D3C9C369/dsc02897-jpg.jpg "© Marktgemeinde Naarn") ](https://assets.tourdata.at/1920x/394093/831576B13A7983EE8F9D92F89FEE5E83A60238E06A7A71BC9F7E2F45D3C9C369/dsc02897-jpg.jpg) [ ![](https://assets.tourdata.at/x550/394091/67FBB0C5E24AB10BB70AA9505C091E6762EE017070FC3AAFDA9D0DF36D07DE76/20170930naarn-3-jpg.jpg) ](https://assets.tourdata.at/1920x/394091/67FBB0C5E24AB10BB70AA9505C091E6762EE017070FC3AAFDA9D0DF36D07DE76/20170930naarn-3-jpg.jpg) 1. 2. pets allowed Donau Ufer Begleitweg 4332 Au an der Donau [ open in Google Maps ](https://www.google.com/maps/search/?api=1&query=Donau%20Ufer%20Begleitweg%2C%204332%20Au%20an%20der%20Donau "Link will open in a new window") [ Open in Apple Maps ](https://maps.apple.com/place?address=Donau%20Ufer%20Begleitweg%2C%204332%20Au%20an%20der%20Donau "Link will open in a new window") ![](https://static.ecmaps.de/staticmap.jpg?experience=webarchitektur-meta&lat=48.220055044657144&lon=14.592139720916746&width=991&height=450&project=ttg-osm-summer-original&zoom=2000&server=meta.tourdata.at) In Au an der Donau (municipality of Naarn, Upper Austria), Austria's largest fish ladder, which is designed as a near-natural bypass, was built as part of the construction of the flood dam. It serves to ensure fish passability, supplemented by a 13-metre-high observation tower and the walk-through "Fish Doni" as an attraction for cycle tourists. Here are the most important details about the fish ladder in Au/Danube: - Location & function: the fish ladder/fish migration aid is located in Au/Donau in Machland and connects the Danube as a bypass arm to allow fish to migrate. - Observation tower: A 13 meter high tower offers views of the Danube, the Machland, the Mühlviertel and the Lower Austrian Alps. - Walk-in fish "Doni": A sculpture made of galvanized sheet metal in the shape of a fish with an open mouth is a highlight for visitors and cyclists on the Danube Cycle Path. - Surroundings: The area is part of the Aulehrpfad in Naarn, which offers insights into the habitat of the Danube floodplains. - It was built as part of flood protection measures. In Au an der Donau (municipality of Naarn, Upper Austria), Austria's largest fish ladder, which is designed as a near-natural bypass, was built as part of the construction of the flood dam. It serves to ensure fish passability, supplemented by a 13-metre-high observation tower and the walk-through "Fish Doni" as an attraction for cycle tourists. Here are the most important details about the fish ladder in Au/Danube: - Location & function: the fish ladder/fish migration aid is located in Au/Donau in Machland and connects the Danube as a bypass arm to allow fish to migrate. - Observation tower: A 13 meter high tower offers views of the Danube, the Machland, the Mühlviertel and the Lower Austrian Alps. - Walk-in fish "Doni": A sculpture made of galvanized sheet metal in the shape of a fish with an open mouth is a highlight for visitors and cyclists on the Danube Cycle Path. - Surroundings: The area is part of the Aulehrpfad in Naarn, which offers insights into the habitat of the Danube floodplains. - It was built as part of flood protection measures. [ Contact ](#ttgCollapseKontakt) ---------------------------------- **Fish ladder in Au an der Donau** Donau Ufer Begleitweg 4332 Au an der Donau Phone +43 7262 58255Show no. mobile +43 7262 58255 E-Mail [gemeinde@naarn.ooe.gv.at](#mailto) --- **Contact person** Marktgemeinde Naarn i. M. --- **We speak the following languages** German [ Opening hours ](#ttgCollapseOeffnungszeiten) ------------------------------------------------ - always open (24/7) - Can only be viewed from outside [ Arrival ](#ttgCollapseAnreise) ---------------------------------- [ Suitability ](#ttgCollapseEignung) -------------------------------------- - All weather - Suitable for groups - Suitable for schools - Pets allowed - Suitable for teenagers - Suitable for seniors - Suitable for single travelers - Suitable for families - Suitable for friends - Suitable for couples - Suitable for children **Season**- Spring - Summer - Autumn - Winter [ Accessibility ](#ttgCollapseBarrierefreiheit) ------------------------------------------------- Please get in touch for more information. powered by [TOURDATA](https://www.tourdata.at "New window") [Suggest a change](#mailto) [ ![TOURDATA Logo](https://www.donauregion.at/fileadmin/templates/global/images/Logo-Tourdata.png "TOURDATA Logo") ](https://www.tourdata.at "New window")