Cruise line
TUI River Cruises
Current water on the corridors this line's catalogue uses, compared with the level Waterlogged calculates a ship of this size wants.
Waterlogged is not affiliated with TUI River Cruises, and no cruise line uses a Waterlogged clear-line operationally.
Which ship
Waterlogged hull clear-line for TUI Skyla, using a draught of 1.60 m.
A Waterlogged clear-line is our own arithmetic: the gauge reading at which the published reference depth, minus the ship's draught and a fixed safety allowance, still leaves a comfortable margin. It is not an operator's decision rule and no cruise line uses it.
The water today
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Middle Rhine gorge
Free-flowingThe river runs free here, so the level is the constraint: this is where a drought actually binds a hull.
Bingen (Rhine-km 528) – Koblenz (Rhine-km 592)
Kaub Rhine
34 cm falling 13 centimetres over 72 hours falling 13 cm over 72 hours
low on mean low/high water (MNW/MHW) · normal on navigational reference levels (NSW/HSW) — the publisher's own classification of its own reading.
59 cm below the 93 cm clear-line. Waterlogged hull clear-line for TUI Skyla, using a draught of 1.60 m. Derived from the published reference pair on file for this gauge.
Official sources and forecasts for Middle Rhine gorge
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Official German federal 14-day water-level forecast — opens BfG
The German federal hydrology institute's own daily water-level forecast, fourteen days ahead, with BfG's own spread and caveats. It covers seven Rhine gauges — Oestrich, Kaub, Koblenz, Cologne, Düsseldorf, Duisburg-Ruhrort and Emmerich — and no other river.
This product is CC BY 4.0. Waterlogged shows forecast values with the exact credit “Bundesanstalt für Gewässerkunde (BfG)” and names the forecast's own issue date and time from the CSV header. The value never feeds Waterlogged's scoring.
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Official German federal six-week outlook (weekly means) — opens BfG
BfG publishes this as a trend statement in weekly means, six weeks ahead, not as day-by-day cruise guidance. It reaches Maxau, Kaub and Cologne on the Rhine, Pfelling and Hofkirchen on the Danube, and Dresden on the Elbe. Open the official product to read BfG's own figures and caveats.
This product is CC BY 4.0. Waterlogged may show the weekly means with the exact credit “Bundesanstalt für Gewässerkunde (BfG)” and the forecast's own issue date and time from the CSV header. We do not turn weekly means into per-day levels or passenger chances.
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ELWIS — German federal waterways notices and navigation information
The official notices channel for commercial navigation on the German waterways: closures, lock works and high-water restrictions in the authority's own wording. Its gauge pages also show the forecast for that gauge where a German authority publishes one, and leave the forecast column empty where none exists.
ELWIS content is OpenData. Commercial reuse is allowed only when the content is unchanged and credited “www.elwis.de”; ELWIS's own terms also permit links to its pages, as long as the source and the address “www.elwis.de” are named. Waterlogged may show a short quote word for word with that credit and a link. A paraphrase counts as an alteration, so we never rewrite notice content in our own words.
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Official German federal 14-day water-level forecast — opens BfG
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Upper Rhine
Held by locksLevel held by locks. Weirs keep a working depth through a drought, so the risk on this stretch is high water and lock operations — not low water.
Mainz (Rhine-km 498) – Basel (Rhine-km 167)
Maxau Rhine
327 cm steady over 72 hours steady over 72 hours
low on mean low/high water (MNW/MHW) · normal on navigational reference levels (NSW/HSW) — the publisher's own classification of its own reading.
293 cm below the 620 cm first high-water mark (speed and wash limits, and the room under the bridges starts to run out).
The barrage chain holds the depth in a drought — but the locks still close at high water. Drought-proof is not flood-proof.
Official sources and forecasts for Upper Rhine
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Maxau's own forecast page — opens the Baden-Württemberg flood forecast centre
Baden-Württemberg's flood forecast centre publishes the forecast for Maxau, not BfG. Open the Vorhersage tab: a forecast line runs about two days ahead in centimetres, and after that the chart switches to a wider trend estimate with a shaded band and a no-rain scenario, out to roughly two weeks. Read the band, not the middle of it.
Waterlogged does not reproduce or interpret the values on this page. LUBW holds the copyright and asks to be consulted before its figures are copied or shown again elsewhere, so this product is linked and never mirrored.
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Official German federal six-week outlook (weekly means) — opens BfG
BfG publishes this as a trend statement in weekly means, six weeks ahead, not as day-by-day cruise guidance. It reaches Maxau, Kaub and Cologne on the Rhine, Pfelling and Hofkirchen on the Danube, and Dresden on the Elbe. Open the official product to read BfG's own figures and caveats.
This product is CC BY 4.0. Waterlogged may show the weekly means with the exact credit “Bundesanstalt für Gewässerkunde (BfG)” and the forecast's own issue date and time from the CSV header. We do not turn weekly means into per-day levels or passenger chances.
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ELWIS — German federal waterways notices and navigation information
The official notices channel for commercial navigation on the German waterways: closures, lock works and high-water restrictions in the authority's own wording. Its gauge pages also show the forecast for that gauge where a German authority publishes one, and leave the forecast column empty where none exists.
ELWIS content is OpenData. Commercial reuse is allowed only when the content is unchanged and credited “www.elwis.de”; ELWIS's own terms also permit links to its pages, as long as the source and the address “www.elwis.de” are named. Waterlogged may show a short quote word for word with that credit and a link. A paraphrase counts as an alteration, so we never rewrite notice content in our own words.
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Maxau's own forecast page — opens the Baden-Württemberg flood forecast centre
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Moselle
Held by locksLevel held by locks. Weirs keep a working depth through a drought, so the risk on this stretch is high water and lock operations — not low water.
Trier (Moselle-km 195) – Koblenz (Moselle-km 0)
Cochem Moselle
218 cm rising 2 centimetres over 72 hours rising 2 cm over 72 hours
normal on mean low/high water (MNW/MHW) · normal on navigational reference levels (NSW/HSW) — the publisher's own classification of its own reading.
No official high-water mark is transcribed for this gauge from a source we have read, so none is shown. Read the authority's notices.
Trier Moselle
219 cm falling 2 centimetres over 72 hours falling 2 cm over 72 hours
low on mean low/high water (MNW/MHW) · normal on navigational reference levels (NSW/HSW) — the publisher's own classification of its own reading.
No official high-water mark is transcribed for this gauge from a source we have read, so none is shown. Read the authority's notices.
Twenty-eight barrages hold the Moselle from Koblenz past Trier to the Luxembourg border, so a low reading here closes nothing. No numeric closure mark is published for these gauges in a source we have read, so none is invented.
Official sources and forecasts for Moselle
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Moselle gauges and their forecasts — opens the Rhineland-Palatinate flood centre
The state flood forecast centre for the Moselle. No German federal forecast covers this river. Rhineland-Palatinate forecasts the Moselle gauges, but only once the level rises above the height the weirs hold; below that its charts show a flat line instead.
Waterlogged does not reproduce or interpret the values on this page. The state service publishes this as its own product, so its forward figures are linked and never mirrored.
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ELWIS — German federal waterways notices and navigation information
The official notices channel for commercial navigation on the German waterways: closures, lock works and high-water restrictions in the authority's own wording. Its gauge pages also show the forecast for that gauge where a German authority publishes one, and leave the forecast column empty where none exists.
ELWIS content is OpenData. Commercial reuse is allowed only when the content is unchanged and credited “www.elwis.de”; ELWIS's own terms also permit links to its pages, as long as the source and the address “www.elwis.de” are named. Waterlogged may show a short quote word for word with that credit and a link. A paraphrase counts as an alteration, so we never rewrite notice content in our own words.
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Moselle gauges and their forecasts — opens the Rhineland-Palatinate flood centre
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Austrian Danube
Held by locksLevel held by locks. Weirs keep a working depth through a drought, so the risk on this stretch is high water and lock operations — not low water.
Passau (Danube-km 2226) – Vienna (Danube-km 1929)
Kienstock Danube
94 cm falling 24 centimetres over 72 hours falling 24 cm over 72 hours
507 cm below the 601 cm first high-water mark (speed and wash limits, and the room under the bridges starts to run out).
Impounded through the Austrian chain. The Wachau inside it genuinely runs free, and Kienstock sits in it, but no maintained-depth model exists for that gauge.
Official sources and forecasts for Austrian Danube
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viadonau / DoRIS — Kienstock gauge page with its forward view (English)
Austria's own page for the Wachau reference gauge. Its graph draws the measured line as “Pegel” and the forward line as “Vorschau”, running about five days ahead. Austria notes that Kienstock forecasts are meant for low-water situations. The same site holds the Austrian fairway information and river notices.
viadonau allows reuse of its Kienstock values with the credit “Quelle: viadonau”, and that credit rides on every Kienstock figure we show. Waterlogged still publishes no forward level of its own: the forward numbers on our Kienstock page are EuRIS's, under EuRIS's name, and this page is viadonau's own fuller version of the same gauge.
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viadonau / DoRIS — Kienstock gauge page with its forward view (English)
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Vienna–Budapest Danube
Free-flowingThe river runs free here, so the level is the constraint: this is where a drought actually binds a hull.
Vienna (Danube-km 1929) – Budapest (Danube-km 1646)
Budapest Danube
17 cm falling 19 centimetres over 72 hours falling 19 cm over 72 hours
83 cm below the 100 cm calibrated judgment line. Waterlogged hull clear-line for TUI Skyla, using a draught of 1.60 m. A hand-set band, not a measured fairway depth and not worked out from any ship's draught. It is our judgment about this stretch and it is labelled as one.
Official sources and forecasts for Vienna–Budapest Danube
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hydroinfo.hu — Hungarian hydrological service (official Danube levels and notices)
Hungary's official hydrological pages for the Danube, including Budapest.
Waterlogged does not reproduce or interpret the values on this page. Waterlogged has received permission from Országos Vízügyi Főigazgatóság (OVF) / General Directorate of Water Management to publish water-level data provided the content accurately reflects reality and the source is credited. This page itself stays a link: we publish the Budapest history we hold under that permission, not a copy of the publisher's own pages.
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vizugy.hu — Hungarian water directorate live gauge pages
The Hungarian directorate's own live level pages, including the Budapest gauge.
Waterlogged does not reproduce or interpret the values on this page. Waterlogged has received permission from Országos Vízügyi Főigazgatóság (OVF) / General Directorate of Water Management to publish water-level data provided the content accurately reflects reality and the source is credited. The Budapest readings we show travel through EuRIS with OVF's credit beside them; nothing is copied from these pages.
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EuRIS — European River Information Services portal
The European portal that distributes the current Budapest, Kienstock and Bulgarian lower-Danube readings Waterlogged shows, naming OVF, viadonau and ИАППД as the originators.
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hydroinfo.hu — Hungarian hydrological service (official Danube levels and notices)
Corridors on this line's routes that we do not read
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Main Held by locks
Level held by locks. Weirs keep a working depth through a drought, so the risk on this stretch is high water and lock operations — not low water.
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Würzburg's own forecast page — opens HND Bayern
Bavaria's own page for Würzburg on the Main, with the same choices as its Danube siblings: the measured level, and a two-day trend. The scale is centimetres over Würzburg's own gauge datum of 164,51 m NHN, which is the same datum this site's readings are on — the two pages printed 135 cm for the same quarter-hour when this link was checked. Nothing further ahead than two days is published for this gauge by anybody: BfG's six-week outlook does not reach the Main.
Waterlogged does not reproduce or interpret the values on this page. Bavaria's flood service asserts its own copyright over this presentation, so its forward figures are linked and never mirrored.
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ELWIS — German federal waterways notices and navigation information
The official notices channel for commercial navigation on the German waterways: closures, lock works and high-water restrictions in the authority's own wording. Its gauge pages also show the forecast for that gauge where a German authority publishes one, and leave the forecast column empty where none exists.
ELWIS content is OpenData. Commercial reuse is allowed only when the content is unchanged and credited “www.elwis.de”; ELWIS's own terms also permit links to its pages, as long as the source and the address “www.elwis.de” are named. Waterlogged may show a short quote word for word with that credit and a link. A paraphrase counts as an alteration, so we never rewrite notice content in our own words.
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Würzburg's own forecast page — opens HND Bayern
Rain in the next 14 days
Rhine above Kaub — representative catchment precipitation.
3 days: 11.6 mm · 7 days: 11.6 mm · 14 days: 11.6 mm — forecast precipitation.
Rain forecast by Open-Meteo (commercial licence), model icon_seamless · fetched 7 September 2026 at 01:23 UTC · covering 14 days, 7 September to 20 September.
Weather data by Open-Meteo (commercial licence) · Representative catchment precipitation total from 8 weighted sampling points; a point sample, not an areal mean.
Rain may slow a fall or create a rise after losses and routing. Waterlogged does not convert this forecast into gauge centimetres or a cruise-disruption probability.
Read a rain forecast at the source
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Deutscher Wetterdienst — official German weather forecasts
Germany's national weather service forecast for the Rhine, Main, Moselle and Danube catchments.
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yr.no — free European rain forecasts (MET Norway / NRK)
A free public forecast covering the same catchments, if you want rain amounts today.
Linking is not endorsement. The publisher controls its own page, its own values and its own terms. Cruise-line names identify the operator's own documents and remain the property of their owners.