Vienna's flood defense system explained | DW News
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- Опубликовано: 30 сен 2024
- While many central and Eastern European cities have been hard-hit by flooding in recent days, people in Vienna haven't been spared. But the city is resisting floods better than most. Let's take a look at the massive flood defense system the city built in the 1970s and 80s.
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This is not the only water protection Vienna has. There are also quite high flood walls along the Donau. Then there is also the Alte Donau and Lobau, that can contain a lot of water. The thing is to expand the drainage from Donau in any way possible (and try to be nice to the folks living down stream). As a Swede living in Vienna for some ten years now, I am impressed. The waterflow that Vienna can handle is insane - and I do not think they are finished yet, with all the new knowledge from the last decades.
the danube flood protection system in vienna is designed to withstand literally a once in a thousand years flood. Its design is based on one of the largest recorded floods that happened in the year 1500 with a flowrate of 14000m³/s The largest, more recent "record" floods of 2003 and 2013 managed to reach 11000 m³/s. Soo yeah, its design is really something impressive. And it paid itself off multiple times already considering it's cost back then vs all the floods it already prevented. Its kind of awe inspireing, how decisions of some smart people 50 years ago, now heavily improved peoples living quality and possibly saved lots of peoples livelyhoods and their own lives.
@@soundphile988 "Once in a thousand years" only applies if the conditions would have never changed. But they have changed and will even more.
@@to_loww as I wrote above, I don´t think they are done yet. Something needs to be done with the Wienfluss, that "stream" broke in Penzing. At the moment, there are very many "water cannons" allover the city, that drains very fast into the bigger waterways. Delay or diverse those, and it will be even safer. Anyways, the Donau itself was not even close to break the walls and flood the city. Some damage yes, but not a cathastrophy.
@@to_loww No. Basic conditions do change within 1,000 years. The last 1,000 years have seen crops being cultivated in Greenland.
@@to_loww yeah ofc thx to climate change. but the fact stands that most flood protection systems, dams etc, are often built in a way to withstand common floods, but like super rare events, they fail at. Usually its because of cost cutting, corruption or mistakes during construction. Best example would be fukushima in japan, or that dam in the US 1 or 2 years ago where the overflow system failed. The system here is built in a way it cannot fail unless it rains nonstop unbelievable amounts over a week or more. And well it did pay off already. Considering the amount of floods it prevented.
Don't underestimate the Wien river. The flow rate increases thousand-fold when it rains and almost reaches a quarter of the (average) Danube.
That's why there is a huge detention basin in Auhof.
Normally 400-500 l/s up to 440.000 l/s
Yes, that's the "small stream that has flooded" they talk about in 1:34... 🙂
And indeed, the differences there are insane, if you see it at its normal flow in its relative large riverbed, you just wonder why there's no water in there ...
I find it interesting: For decades nobody was interrested in this system (New Danube). People were calling it a waste of money. Now suddenly everybody is.
The danube island is a large recreation area free to use for everyone and with hardly any commercial facilities on it. It and all the danube riversides as a whole are good places for cycling.
Recommended video: tapakapa - why vienna has FOUR danubes
Danube island is full of pumpkins, washed ashore as the waters recede. A reminder of the devastation that happened upstream
Good defense system and forward-thinking strategy we can learn from
I am proud to be Viennese!🇦🇹
You are lucky. Not proud. Why are you proud? Did you actively contribute?
@@silver222333keep calm we go to work every day so everybody gives his part to the city
@@silver222333I am 15 years old and proud doesn’t mean that I contribute💀
this is not danube's ancient root. it's the new danube which was build over 100 years ago. befor that danube was completly unregulated and wild.
The Vienna Flood Protection had two phases. Until 1870 the danube had several arms floating through, whats now vienna (back then it was suburbs). Also the "Wien-Fluss" was in it´s original bed in the souther parts of the city (back then also suburbs). In a massive building-project Vienna was redesigned, part of it was the regulation of the Danube into a straight river-bed and a 450 meter wide plain for flood-events. Also, the Wien-Fluss was dough in a deep river bed.
Although this brought some protection, it was not enought. So in the 1980ies the city build the 2nd regulation, the new danube, where the plain for flood-events was - that´s the project referred in the Video.
Right, but the new Danube with its island was made in the 70s or at least started being build if I remember correctly
To elaborate some more: The Wienfluss also has 6 (I believe) big retention pools on the western end of the city. Due to the surrounding geography and geology, the normally very small and gentle river (or rather creek tbh) can swell up to a huge wild alpine stream for a couple hours or days within a very short time (a few hours), as was the case over the last couple days. To prevent it from overflowing inside city perimeters, the retention pools can be flooded for the water to be released later on when there's less water coming in from upstream regions. However even that system wasn't quite enough this last weekend. At one point the retention pools were full and there was still a lot of water coming in, hence why some surrounding areas and parts of the U4 (underground railway) got flooded.
@@vinylrichiejr.2416 Started 1972, finished 1988
Vienna is a beautiful city, so as the people. Love from China
I'm a Donauinsulaner😊
W Vienna, I only spent one night there on a layover but from what I could see and feel this is a beatiful city with great food, music/arts, beatiful people, great infrastructure and flood protection. Well done!
Yes, the system of the New Danube is good and Vienna resisted the flooding well. BUT the pictures you show are not from the New Danube they are from the Old Danube which is basically a lake, because it has no connection to the actual Danube anymore. Also many towns just outside of Vienna got hit very badly, like St. Pölten almost completely was flooded. People got evacuated also some died in the floods.
The channel the danube flows through normally is not ancient at all.
With the danube in vienna nothing is ancient. Without human intervention the river moved a lot, it wriggled heavealy which defined the regions characteristics.
The danube was straightened under the monarchy with a massive overflow flatland right next to it. That was then again modified in the 70s into the main stream(danube) the overflow stream (new danube) and the island.
Nothing about how the danube flows through vienna is in any way ancient
It's not only flood prevention. In summer the new Danube is like a gigantic and long lake, providing a 2x 21 kilometer Beach for everybody for free. Also: The biggest open air festival in Europe, the "Danube-island-festival" takes places every June on the island between the Danube and the new Danube. And it's also for free haha I love Vienna besides that, the Danube island is also designed like 21kilometer park, providing green spaces all across the city
Genius. Thank you
better than the germans. 😁
0:50 This is not the Danube's ancient route. It was already regulated in the 1800s (that's why it's so straight), causing many of the problems we had to fix in the 20th century.
Good proactive thinking- Similar thinking in Canada, with the creation of a big ditch around Winnipeg to divert water from the Red River which was prone to floods.
This kind of system will be extremely useful for flood prone countries like Bangladesh
Vienna calling
Vienna is a beautiful city, so as the city. Love from China
the danube island gives me the notwendige time to think about my future, to grow up to and become a famous tattoo artist one day!
Wien geilste
Now show the Romanian "Porțile de fier"
Dhauggg ,,,
Wien hält Hochwasser bis zu einer Durchflussmenge von 14 000m3 /sec beim Wehr in Korneuburg aus.
Wir hatten die letzten Tage 10 000m3 sec
Also da geht schon noch einiges
Die donau ned wien(stadt).
Der wienfluss(die wien) is a ganz andres thema und bei dem hats teilweise geflutet.
@@benediktseifert4334 hier wird aber die Donau gezeigt nicht der Wienfluss
@@benediktseifert4334Beim Wienfluss ist es wirklich sehr knapp geworden, um solche Ereignisse besser abzufangen, wären mehr Rückhaltebecken notwendig in Zukunft
what exactly was explained, this edit was a joke?
Everybody hating on LA river concrete channel but it makes perfect sense for this exact reason.
That river is artificial
mostly the climate freaks think that
lol. climate change risk.
*das problem ist nicht das hochwasser sondern dass es das grundwasser hochdrückt und dann alle keller und u-bahn tunnel volllaufen und der strom ausfällt*
The solution is to make 6 km inflatable mountains and spray the top of the mountain with water and all the water will turn into snow because of where the mountains are located in Africa it causes drought because it blocks the clouds that make rain
Wtf?
Don't do drugs. 😂😂😂
If you take a map where floods happens, you will discover that above this countries is the air planes _high way_ , all air planes wich goes from north europe to asia and vice versa, all fly above thisi countries.
Emissions from aviation are a significant contributor to climate change. Airplanes burn fossil fuel which not only releases CO2 emissions but also has strong warming non-CO2 effects due to nitrogen oxides (NOx), vapour trails and cloud formation triggered by the altitude at which aircraft operate.
Its time to ban this air planes as soon as posible or redirect them to other countries, Ukraine is no fly zone, and now all planes wich goes to north eu are redirected to eastern eu countries!
Bratislava is 10 times better protected and lies below Vienna, and the Morava River also flows into the Danube in front of Bratislava.
How? Bratislava City lies directly at Danube...
@@eddastrohmayer251 are you from Europe? If so, I don't understand that you don't know
How exactly is Bratislava 10 times better protected? It uses the same system that Austria uses on some 200km in lower Austria: movable barriers.
This is in no way comparable to the Danube island project, neither in size nor in function. Additionally to the two arms of the Danube there is even a third one, the Danube Channel - protected by walls built around 1880. What is more, Vienna - opposed to the small city of Bratislava - has a second river, the Wien, which as I am sure you have seen turns into a raging monster when there are heavy rainfalls.
@@whoisitwhomaxi simply, 20 km from Bratislava there is a large dam with a power plant with xxxx turbines .. it is not a problem to set the level of the Danube even 1.5 meters lower than it is currently approx. 9.8 m, but then Budapest would be flooded in 24 hours
@@ayrtonsenna1020 Vienna has also a damn, but in Addition Danube island makes everything much more safe.
Haha the reporter has to mention clima change in the report 😂
0:50 It's in fact not the ancient root. The highest curved, now 100% still, arm ist it, but with many side arms. The Danube was artificially straightened in the late 19th century
Don’t blame climate change for weather.
🙄
As if the climate and the weather were not connected at all
My dear Harry, just try to wake up!
Don’t blame weather for climate change. Living here in Vienna, experiencing this extreme heat for like 6 weeks and then having this flood overnight is exactly the extreme weather conditions people who researched a lot on this subject, said would become reality decades ago. The Wien-Fluss got so high these days like it hasn’t been in centuries. Talking to the older people who grew up here, they often also say it wasn’t this extreme back then, winters were also much colder (the Danube was frozen regularly, today it never had been)
exactly, weather is created by the Coca Cola company. without Coca Cola no rain, no snow, no wind. Before Coca Cola was created, there was nothing, just ask you grandpa.