High water in Passau? Current water levels

Data from: 21.11.2024 ^[1]

Danube …m Inn …m Ilz …m

Danube water level

…

Standard level ( m)

1st reporting level (7.0 m)

2nd reporting level (7.4 m)

3rd reporting level (7.7 m)

4th reporting level (8.5 m)

What do the reporting levels mean?

Reporting level 1:

Minor spills in places.

Reporting level 2:

Agricultural and forestry areas are flooded or slight traffic obstructions on the main roads and municipal roads.

Reporting level 3:

Individual built-up properties or cellars are flooded or closure of supra-local traffic routes or isolated use of the water or dam defence is necessary.

Reporting level 4:

Built-up areas are flooded to a large extent or use of water or dam weirs is required on a large scale.
At what height does the Danube flood Passau?

The higher the water level, the more areas of the city of Passau are flooded. This overview shows from which water level street/area will be flooded.

6,30 m:

Passage problems at the suspension bridge for some cruise ships

7,25 m:

Flooding of the port area Racklau and railway underpass Sulzsteg, water leakage at the Fritz-Schäffer-Promenade, village tip no longer accessible

7,7 m:

Flooding of the St 2132 near Löwmühle, water leakage at the parking lots under the Schanzlbrücke

7,8 m:

Discontinuation of navigation by the Water and Shipping Schifffahrtsamt

8 m:

Water leakage at the Höllgasse, Obere Donaulände

8,3 m:

Flooding of B388 near Löwmühle, flooding of B12 Freyunger Straße

8,6 m:

Water leakage at the Stelzhammer underpass

9 m:

Flooding of Höllgasse and Rathausplatz, Obere Donaulände along the entire entire length flooded

9,2 m:

Confluence of the Danube and Inn in Ort, water outlet in Brunngasse and Bratfischwinkel

10,75 m:

Water leakage at the Angerstraße

11,75 m:

Water leakage at the Bahnhofstraße

12 m:

B85 is flooded at Hacklberg height, Ludwigstraße is flooded via Brunngasse flooded

12,25 m:

Water leakage at the Regensburger Straße (B8) and Vilshofener Straße

12,75 m:

Flooding of Dietrich-Bonhoeffer-Platz and Rindermarkt

13,5 m:

Suspension bridge is flooded

13,75 m:

Flooding of Ludwigsplatz

Source: [2]
From which measuring point do the water level data of the of the Danube?

The data of this diagram and those of the current water level of the Danube come from the measuring station Passau / Danube. New values are added here daily.
Further information about the measuring station as well as a location map and photos are available on the page of the Bavarian flood information service Stammdaten Passau / Donau.

The standard level of the Danube is calculated from the data since September 2021.

Inn water level

…

Standard level ( m)

1st reporting level (5.4 m)

2nd reporting level (6.0 m)

3rd reporting level (6.8 m)

4th reporting level (7.5 m)

What do the reporting levels mean?

Reporting level 1:

Minor spills in places.

Reporting level 2:

Agricultural and forestry areas are flooded or slight traffic obstructions on the main roads and municipal roads.

Reporting level 3:

Individual built-up properties or cellars are flooded or closure of supra-local traffic routes or isolated use of the water or dam defence ist necessary.

Reporting level 4:

Built-up areas are flooded to a large extent or use of water or dam weirs is required on a large scale.
At what height does the Inn flood Passau?

The high water marks of the Inn begin at just over three-and-a-half metres and affect the following areas in Passau:

3,65 m:

The Inn quay near the Schaibling tower is flooded

4,35 m:

The Inn quay at the Marienbrücke is under water

4,50 m:

Water leaks at the Zinngießergasse

6,00 m:

At the Inn promenade and in the Klosterwinkel the water rises over the banks

6,40 m:

There is water leakage at the Unterer Sand and in the Theresienstraße, the railway track between Innsteg and Innstadtbahnhofweg is flooded

7,00 m:

Flooding of the Lederergasse via Lohhaufen, the Gottfried-Schäffer-Straße and the Innstraße near the railway bridge

7,30 m:

Water leakage at the Kapuzinerstraße and in Voglau

8,00 m:

Water leakage occurs at Oberer Sand

9,00 m:

The Linden Valley is flooded

9,50 m:

Wiener Straße and Jahnstraße are flooded

10,50 m:

In addition to the Karolinenplatz and the Nikolastraße also the accesses to the Innsteg, called Fünferl-Steg, are flooded

Source: [3]
From which measuring station do the water level data of the Inn come?

The data of this diagram and those of the current water level of the river Inn come from the measuring point Marienbrücke / Inn. New values are added here daily.
Further information about the measuring point as well as location map and photos are available on the page of the Bavarian Flood Information Service Stammdaten Passau Marienbrücke / Inn.

The standard level of the Inn is calculated from the data since September 2021.

Ilz water level

...

Standard level ( m)

1st reporting level (2.8 m)

2nd reporting level (3.0 m)

3rd reporting level (3.2 m)

4th reporting level (3.8 m)

What do the reporting levels mean?

Reporting level 1:

Minor spills in places.

Reporting level 2:

Agricultural and forestry areas are flooded or slight traffic obstructions on the main roads and municipal roads.

Reporting level 3:

Individual built-up properties or cellars are flooded or closure of supra-local traffic routes or isolated use of the water or dam defence is necessary.

Reporting level 4:

Built-up areas are flooded to a large extent or use of water or dam weirs is required on a large scale.
At what height does the Ilz flood Passau?

The water level of the Ilz also has an influence on the Passau water level, as it joins the Danube and the Inn at the centre of the town. These high water marks lead to flooding:

2,00 m:

Warning announcements in Kalteneck to those affected. Closure of the GV-road Fischhaus-Straßkirchen by the market Hutthurm (from St 2323) and by the municipality of Salzweg (from the bridge over the Stempbach)

2,80 m:

Advance warning issued for lower-lying homes as well as initial evacuations of ground floors in Fischhaus. Also in Passau/ Hals the first houses are flooded.

3,00 m:

More warning announcements in Kalteneck.

3,20 m:

Cellars in fish house between access road to bathing place and railway line are under water.

3,40 m:

Grounds and cellars in Oberilzmühle are flooded, in Passau/ Hals, the ground floors of houses on Perlfischerweg are affected.

3,50 m:

In Fischhaus, lower-lying houses along the Ilz are flooded. and in Kalteneck there is a backwater in the sewage plant. In Aumühle, too, the first floods of basements occur.

3,80 m:

The access road to Kalteneck is under water, as well as a company premises.

4,00 m:

In the Oberilzmühle further ground floors are flooded , also cellars and ground floors of the Unterilzmühle are now affected.

Source: [4]
From which measuring point do the water level data of the of the Ilz come?

The data of this diagram and the data of the current water level of the river Ilz come from the measuring point Kalteneck / Ilz. New values are added here daily.
Further information about the measuring station as well as a map and photos are available on the page of the Bavarian flood information service Stammdaten Kalteneck / Ilz.

The standard level of the Ilz is calculated from the data since September 2021.

The flood and the city of Passau

The flood and the city of Passau are two old acquaintances. Connected by a long common history one can hardly be imagined without the other. But why do so many floods hit the Three Rivers City in Bavaria? Passau, as its name suggests, is surrounded by three rivers: Inn, Danube and Ilz. This means that the potential is very high for the level of one of the rivers rises to such an extent that the water overflows its banks. Another reason for the frequent flooding in Passau is the geographical location of the city, which is unique in Lower Bavaria. surrounded by high steep slopes and the dense population on the banks, the water has no alternative in the case of continuous rain and rising water levels. The old town, which lies exactly between the Danube and the Inn, is usually the first to be hit. If the water level continues to rise, the Inn city and the inner city are also affected.

The last time this happened was during the great flood of the century in 2013. the case. After this year's flood, Passau gained nationwide attention beyond the borders of Bavaria. nationwide attention. And not only Passau was affected, numerous other towns and villages in Lower Bavaria were also flooded. All three rivers, the Danube, Inn and Ilz, overflowed their banks to such an extent that a disaster alarm had to be sounded. The old town of Passau resembled canals with brown water up to the first floor and the continuous rain continued. The record level of the Danube was measured on June 3: 12.89 metres. The Inn reached a historic record level of 10.20 metres. Reporting level 4 and thus the highest reporting level was reached. The first reporting stage begins at a level of 7.0 meters, the highest reporting stage is reached at 8.5 meters. at 8.5 meters. At the latest then the disaster alarm is often unavoidable.

But what happens in Passau during a flood? Triggered by continuous rain over a period of days, the Inn backs up the Danube with its immense power and high flow velocity, so that the Danube overflows its banks and floods the city. banks and floods the city. The same happens with the Ilz, which in turn is dammed back by the Danube.

The town hall tower is a silent witness to the numerous floods in Passau. The markings still show today when and how high the level of the rivers was in the course of the the history of the city of Passau. The oldest record is from the year 1501. The earliest record of high water in Passau is from 1060. 12.54 metres is said to be the level of the level of the Danube measured at that time. However, this mark can no longer be seen on the town hall tower. The current water level can always be read at the Schanzl bridge in the centre of Passau.

To this day, the floods in Passau and their dangers cannot be completely averted. There are various flood protection projects that are currently being discussed. However, with the measures taken so far, such as the barrage in Austria, dams and improved methods for forecasting and an early warning system of the water management office, the Passau residents can breathe a sigh of relief. Everywhere in Lower Bavaria, precautions have been taken to ensure that this disaster does not happen again so quickly. In the future, measures should be taken more quickly to prevent such high damage to buildings, as was the case in 2013.

History of the flood in Passau

2024

News: The flood of 2024

approx. 10 m

Due to a blocking high pressure area in north-eastern Europe, the low pressure area moved very slowly over the Alpine region at the beginning of June 2024. In short, this meant persistent rain showers in Bavaria and Baden-Württemberg and thus rising water levels.

Initial estimates predicted a maximum water level of 7.80 meters (reporting level 3) for the Danube in Passau. What the experts had not expected, however, was the unexpectedly heavy rainfall and the enormous rise in the Inn. In the early afternoon of June 4, both the Inn and the Danube peaked at 7 meters (reporting level 3) and 10 meters (reporting level 4) respectively, causing the city of Passau to declare a state of emergency.

As a result of the flooding, several streets were closed, the old town could only be accessed by car by residents and daycare centers and schools had to close. In addition, the town hall square and the Inn promenade were completely flooded.

2021

The flood of 2021

approx. 8.24 m

In western and central Europe, low Bernd caused numerous floods in July 2021. Affected Belgium, the Netherlands, Austria and Switzerland, as well as Germany. Here, with a focus on 14 July, up to 150 litres of rain fell locally within 24 hours. According to the German weather service, this only happens once every 100, perhaps even once every 1,000 years. In particular North Rhine-Westphalia and Rhineland-Palatinate were particularly affected by severe flooding. At least 180 people died, including five firefighters. The district of Ahrweiler was was hit particularly hard: Houses collapsed, bridges were swept away, and some residents could not be rescued from the floods in time.

A few days later, on 18 July, the effects of the high precipitation also became apparent in Passau. Both on the Danube and on the Inn, the water overflowed the banks. Despite the initially tense situation, a maximum level of 8.24 metres was reached, which was only level 3.

2013

The "Flood of the Century" - The Second

approx. 12.89 m

The 2013 flood is considered the second highest the city of Passau has ever experienced. A water level of 12.89 metres on the evening of 3 June caused damage of over 100 million euros. The rain at the end of May and beginning of June fell on ground that was already wet and could no longer absorb the water masses. All rivers in the affected area overflowed and carried the water into the Danube or the Inn, which also resulted in a historic level of the Inn (10.20 metres). Passau was under disaster alert for 9 days, in the old town electricity and water supply failed. Only on 11. June the city lifted the disaster alert.

more about the flood of the century 2013

The 2013 flood is considered the second worst flood disaster in the history of the city of Passau. The problem this time was not only the Danube but especially the Inn. The Inn already carried twice as much water as the Danube on June 2, 2013 and dammed it back at the confluence of the two rivers. When the water rose even faster than expected, the city of Passau called for a disaster alert on Sunday, June 2. and asked for the help of the German Armed Forces. Already in the evening of that day, the power supply failed in parts of the city. On the following day, the Passau public utility company was also forced to cut off the city's water supply. One day later, decentralized distribution points were set up for the citizens and the hospital in Passau continued to be supplied by tankers, so that an evacuation could be averted. could be averted. The maximum level was 12.89 meters and was measured in the evening of the 3 June. The Inn also reached a historic high of 10.20 metres on this evening.

The flood caused countless damages, from basements filling up to leaking tanks that caused a layer of oil all over the old town. The total damage was estimated at approx. 100 million euros. The Passau retail trade suffered the most, since many shops had no chance to clear their shops and therefore not only the furniture but also all goods were destroyed. Particularly badly damaged was the theatre, which had to close down for the rest of the season, as well as the historic ScharfrichterHaus.

In the night of 4 June, the level of the Inn began to fall, which also led to a reduction in the Danube level. From this point on, the flood waters began to recede , revealing the masses of mud it had left behind in the entire city centre. Already on the 5th of June, more than 1200 helpers from the fire brigade, the THW, the Bundeswehr, the police, the BRK and the DLRG were in action in Passau. On 8.June there were were over 3000. A large part of it were also the students of the University of Passau, who at first tried to save the university but later also helped in the whole city and earned a great respect in the population, which would not have expected it. The disaster alert remained in effect for nine days, until June 11.

2002

The flood of 2002

approx. 10.81 m

Only a few years earlier, Passau had been hit by a severe flood. The level of the Danube showed a peak of 10.81 metres at midday on 13 August. Not only Bavarian areas were affected by the flood, but also large parts of Saxony. The floods were triggered by very heavy rainfall lasting several days at the beginning of August.

1954

The "flood of the century

approx. 11.17 m

At the 1954 World Cup, the constant rain helped the German national team to the "Miracle of Bern", but it was this persistent rainfall that led to the worst natural disaster in Bavaria of the 20th century. Of course, Passau was, as with every heavy flood in the region, was affected with a maximum water level of 12.20 metres. This is the fifth highest water level in the history of the city. A total of twelve people during the floods in July 1954 ,seven of them from Lower Bavaria, lost their lives.

1920

The flood of 1920

approx. 10.47 m

The flood of 1920 reached a maximum level of about 10.47 meters. This was not a very severe flood for the city of Passau, , which is why there are few records of it.

1895

The flood of 1895

approx. 11,17 m

The level reached by the Danube in Passau during the flood of 1895 was about 11.17 meters. Professor of Geography at the University of Vienna, Dr. Albrecht Penck, gave as the reason for the flood that year, that the ten preceding years had already been very rainy, so that such a flood was only to be expected. Photographs show how the citizens of Passau citizens paddle on rafts through the Ilz breakthrough.

1862

The flood of 1862

approx. 11,30 m

The flood in February 1862 was caused by persistent thaw and simultaneous continuous rain. The water level in Passau Passau broke the 11 meter mark on February 2 and reached a peak of 11.3 metres. Besides Passau, Vienna was particularly affected. In capital of Austria, this flood was the impetus for the subsequent "Danube regulation".

1787

The flood of 1787 - The "Allerheiligengieß" (All Saints' Pour)

approx. 11,71 m

The name "Allerheiligengieß" (All Saints' Pour) was given to this flood disaster due to its proximity to the the catholic holiday "All Saints' Day". The highest water level in Passau this year was Passau was 11.71 meters. The reason for the increased flooding from 1784 can be traced back to the eruption of the volcano "Laki" in Iceland in 1783/84, which changed the climate of the northern hemisphere permanently.

1595

Another flood of over 12 meters

approx. 12.04 m

An abrupt melting of the winter snow together with heavy rainfall caused a severe flood in Passau with a water level of over 12 metres. The city's worst flood was less than a hundred years ago.

1501

The highest water level ever measured

approx. 13,20 m

In the summer of 1501, heavy over-rainfall led to one of the greatest flood disasters in the whole of Central Europe around the Danube. The city of Passau experienced the highest water level ever recorded, about 13.2 meters,

1060

The first flood recorded by history in Passau

approx. 12.54 m

A winter with heavy frost and snowfall was followed by a severe flood with a documented water level of about 12.54 meters, the third highest ever recorded. This is also the only flood not recorded on the Town Hall tower, as it occurred almost 1000 years ago and records of the flood are poor.

Water level marks of the city of Passau

If you look closely, you will find them everywhere in the city of Passau: water level markers. These markings on buildings show to where a certain historical high water level in Passau has risen. If you would like to see for yourself a picture of past floods in Passau, you can find a list of prominent level marks here.

Passau city hall tower:: High-water mark on the Passau town hall tower ©Robert Hartl

Probably the best known water level mark in the city is located at the town hall tower. Here, historical water levels of the Danube are marked. The highest flood ever recorded was in 1501. 1501, closely followed by the flood of the century in 2013. Only when you stand in front of the mark yourself you understand the catastrophic extent of these floods.
Entrance Gymnasium Leopoldinum:: High water mark at the Gymnasium Leopoldinum in Passau ©Robert Hartl

Another water level marker is located at one of Passau's four grammar grammar schools, the Leopoldina. This can be reached from Römerplatz towards the Inn or from Residenzplatz in the direction of the city center. Its eye-catching exterior façade (see photo) makes it easy to spot. The high water level is indicated by a small sign above the entrance.
Innkai (height of the city theatre):: High-water mark at the Inn quay (at the level of the municipal theatre) ©Robert Hartl

Also prominently placed is the water level mark at the beginning of the Innkai. It can be reached via the stairs just before the Marienbrücke near the Stadttheater. Thus between the playgrounds Innpromenade and Innbrücke. Due to its bright yellow color, the water level mark is hard to miss.
Innkai (height of local court):: High water mark at the Inn quay (height of the district court) ©Robert Hartl

If you continue along the Inn quay in the direction of the town centre, you will pass another level marker. It is located on the wall of a yellow house and marks the water levels of the floods of 2002 and 2013.
Under the suspension bridge:: High water mark under the Prinzregent-Luitpold bridge ©Robert Hartl

The last level marker is under the Prinzregent-Luitpold bridge, in Passau known as the suspension bridge. It can be reached via the stairs next to the "Altes Bräuhaus" in the direction of the Donaukai. The water level marker is on the left side of the stairs after going down. Alternatively, you can also reach it by walking along the Donaukai from the direction of the town center or if you follow the Fritz-Schäfer-Promenade next to the town hall in the direction of Donaukai.

We have forgotten a level marker? Feel free to send us a short message (contact).

Frequently asked flood questions

What is flooding?

Flooding is the condition of water bodies in which their water level is clearly above the level of their mean water. The counterpart of high water is low water. ^[5]
How does flooding occur?

Floods in rivers always occur when spatially extensive, prolonged long-lasting precipitation, sometimes in conjunction with snowmelt, increases the discharge in the river, so that the watercourse becomes so large that they overflow. The water level fluctuations lie in the meter range. Due to the flood forecasting systems the temporal course and the maximum water level of the floods can be well estimated. ^[6]

Bavaria receives an average of 940 mm of precipitation per year. On the total area of the Free State thus receives 66 billion cubic metres of water. In comparison: The Lake Constance has a volume of 48 billion cubic meters. Part of this rain evaporates, seeps into the ground or is absorbed by plants. Large quantities of the flow through our 100,000 kilometres of streams and rivers. eventually flow into the sea. But just like on our highways, there can be... traffic jams. If it rains too much at once, floods occur. ^[7]
What do I have to pay attention to in case of high water?

Please pay attention to radio and loudspeaker announcements during floods as well as the teletext board 647 of the Bavarian Television. ^[8]
Is there currently high water in Passau?

In Passau, the Danube reaches notification level 1 at a level of 7 metres, the Inn Inn at 5.4 metres and the Ilz at 2.8 metres. The current water levels can be at the top of the page. ^[9]
When will there be high water in Passau?

In Passau, there are phases every year when the Inn and Danube in particular overflow their banks. Severe floods have only occurred every few decades, with a flood of the century occurring in 2013. The floods are caused, for example, by heavy rainfall over a period of several days or by melt water.
How can you prepare for a flood?
- Heed warnings (for example via warning systems such as NINA)
- Supply and, if necessary, evacuation of persons in need of assistance and pets
- Get protective material (sandbags, boards, silicone, ...)
- Stow chemicals/heating oil safely
- Move valuables to flood-protected (higher) rooms, generally clear cellars (also because of ground water)
- Check precautions on food, drinking water, batteries, battery-operated radio, flashlights, insect repellent, camp stove and toilet supplies
- Prepare emergency luggage including important documents
Source: [10]
What should you do in case of flooding?
- Keep calm: This is the only way to make clear decisions.
- In the house:
  
  Check precautionary measures
  
  Avoid the cellar
  
  Seal openings such as doors and windows
  
  Switch off electrical appliances and heaters in rooms at risk of flooding, ideally switch off, preferably turn off the power completely (remove the fuse).
- In the car:
  
  Clear garages and parking spaces in good time (take particular care in the case of underground garages)
  
  Do not drive your car over roads that are already flooded (call a towing service if the wheels are already under water)
- Save lives:
  
  Help others, but without putting yourself in danger
  
  Take children to safety beforehand
  
  No "boat walks"
  
  Do not enter or drive on flooded streets and shore areas
  
  Urgently follow the instructions of the emergency services
Source: [11]
What flood protection measures are in place in Passau?
On the basis of the revised feasibility study on flood protection in Passau from from 2014, there are plans for the following sections:
1. Fürstenweg: Start 2016, completion and commissioning: end 2019 ^[12]
2. Lindau/Sulzsteg: Planning approval procedure completed in the meantime. The planning approval decision under water law is final. An agreement with the Free State of Bavaria on the construction and maintenance of the flood flood protection facilities has been concluded. Start of construction: November 2019 ^[13]
3. Hals: The city council of the city of Passau has decided in its meeting of 11.11.2019 resolved the following points on flood protection Hals:
  
  The planning for the implementation of a state flood protection system for the for the Passau-Hals area are to be completed on the basis of the new findings on the required basic flood protection heights and in consideration of the objections from the citizens, are not to be pursued any further.
  
  The Free State of Bavaria, represented by the Water Management Authority Deggendorf, is requested to discontinue further planning for the flood protection of the Hals and to withdraw the application for planning approval.
  
  The city of Passau takes up contact with the aggrieved parties in Hals, in view of possible decentralized flood protection measures, and offers the corresponding advice.
  
  The water management office Deggendorf is asked to optimise the quality of the forecasts on the Ilz and to speed up the associated alerting of the emergency forces and the affected accelerate.
  
  Furthermore, superordinate strategies are to be discussed with the responsible (WWA, LfU...) and future innovations to improve the flood situation in Hals.
4. Upper Danube Lands/Brunngasse: The goal is to submit the approval planning in 2019. ^[14]
5. Magalettigasse^[15]: Award of contract Design planning is scheduled for the 1st quarter of 2020.
6. Gottfried-Schäffer-Strasse: The State Water Management Office has confirmed the technical feasibility of the design for flood protection on the Gottfried-Schäffer-Straße , which was selected in a cooperative planning competition. In the plenary session on Monday, 10.02.2020, the completed film was presented to the members of the City Council. The animation illustrates how the implementation of the flood protection at the Gottfried-Schäffer-Straße could look like (Video see [16]). The city council has decided that the state water management office on the basis of variant 1 (preferred variant) should now enter into the design planning.
  The floodplain affected here includes the Gottfried-Schäffer-Straße, the Heiliggeistgasse, the Oberer Sand, the Theresienstraße and the Unterer Sand. In the 2013 flood disaster, 50 buildings and 266 residents were affected. The amount of damage is estimated at 15 million euros.
As a result of the feasibility study conducted in 2014, several further sections were assessed as currently not feasible. For this purpose it was agreed with the Deggendorf Water Management Authority that further investigations be carried out for these areas. In particular, it is to be examined whether the small-scale subdivision of the sections flood protection in subareas is possible. ^{[17]
[18]}
What do you do after a flood?
- Pumping off only when the groundwater level has dropped sufficiently
- Inventory and photos of the damage for the insurance
- Remove mud and water residues from the house
- Drying rooms with heaters
- Have electrics, heating and statics checked by specialists
- In case of pollutant leakage (gasoline, paint, oil, ...): Call the fire brigade
- Professional disposal of waste (broken furniture, ...)
- No consumption of east and vegetables from flooded areas
Source: [19]
What are the names of the three Passau rivers?

The three rivers in Passau are called Danube, Inn and Ilz, whereby the Danube is blue, the Inn is green and the Ilz is black. At the Dreiflüsse-Eck or the tip of the town they merge into each other and flow together as the Danube. Because of the three rivers Passau has also the name "Dreiflüssestadt".
Is there shipping in Passau?

A large tourism branch of the city of Passau is shipping. For ships only the Danube is navigable for ships. Along the is a harbour with 17 landing stages and 29 berths for passenger ships. There are river cruises as well as scheduled boat trips offered. Particularly well-known ships for round trips in Passau are the Crystal Ship and the Convertible Ship.
What is the normal level of the Danube, Inn and Ilz rivers?

The median water level for the Danube in Passau in recent years is m, for the Inn m and for the Ilz m.

Flood warning systems

Floods can quickly turn a quietly flowing river into a raging torrent. Meanwhile, there are some apps that warn of such disasters. Here is a list of the most important Warning apps.

NINA

The warning app NINA obtains its information from the Federal Warning System (MoWaS) and warns users of dangerous weather, major fires or the spread of hazardous substances. The warning takes place via push messages and personalized warning tones. The app requires a data connection, so the smartphone must be connected either via a mobile network or WLAN. It can be defined for which locations (cities, municipalities, counties) messages should be received. On the other hand, the location function of the smartphone can also be used to provide the most accurate, up-to-date messages. NINA also provides tips on what to do in the event of an emergency, such as in the case of flood or fire.

App NINA: https://www.bbk.bund.de/DE/Warnung-Vorsorge/Warn-App-NINA/warn-app-nina_node.html

KATWARN

The KATWARN app provides official warnings and recommendations for action from authorized authorities and organizations for security. These are forwarded to the user by the app. KATWARN also works on older mobile phones on which the app cannot be installed. For this simply send an SMS with KATWARN POSTCODE (POSTCODE = your postal code) to the number 0163 7558842, in order to receive warnings as SMS directly to your mobile phone. Please note that the alerts are sent with a vibration effect, but the volume of the alert depends on the volume of the device. If the mobile phone is set to silent, no alarm sound can be heard.

App KATWARN: https://www.katwarn.de/WarnWetter

WarnWeather

The WarnWetter app is operated by the German Weather Service (DWD) and shows the current weather situation in Germany in detail. and sends push notifications if storms, precipitation, thunderstorms, icy conditions are reported. The app's data comes from the German Meteorological Service. In the app there are no advertisements for users.

App Warning Weather: https://www.dwd.de/DE/leistungen/warnwetterapp/warnwetterapp.html

ACHTUNG.PASSAU!

ACHTUNG.PASSAU! is the information management system of the city of Passau. In case of an emergency, for example rising flood levels, the citizens of Passau are informed via this system. The warning system is composed of: