Cruise line
Great Rail Journeys
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 Great Rail Journeys, and no cruise line uses a Waterlogged clear-line operationally.
Which ship
Waterlogged clear-line, using an assumed 1.60 m draught. Our catalogue holds no hull for this line's routes, so this is a class assumption — not a fact about your ship, and not a figure the operator has published for the vessel you will be on.
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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Lower Rhine
Free-flowingThe river runs free here, so the level is the constraint: this is where a drought actually binds a hull.
Emmerich (Rhine-km 852) – Cologne (Rhine-km 688)
Cologne Rhine
78 cm falling 20 centimetres over 72 hours falling 20 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.
16 cm below the 94 cm clear-line. Waterlogged clear-line, using an assumed 1.60 m draught. Derived from the published reference pair on file for this gauge.
Official sources and forecasts for Lower Rhine
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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
333 cm rising 3 centimetres over 72 hours rising 3 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.
287 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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Straubing–Vilshofen free stretch
Free-flowingThe river runs free here, so the level is the constraint: this is where a drought actually binds a hull.
Straubing (Danube-km 2321) – Vilshofen (Danube-km 2249)
Pfelling Danube
226 cm rising 4 centimetres over 72 hours rising 4 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.
69 cm below the 295 cm clear-line. Waterlogged clear-line, using an assumed 1.60 m draught. Derived from the published reference pair on file for this gauge.
Hofkirchen Danube
155 cm rising 2 centimetres over 72 hours rising 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.
57 cm below the 212 cm clear-line. Waterlogged clear-line, using an assumed 1.60 m draught. Derived from the published reference pair on file for this gauge.
Official sources and forecasts for Straubing–Vilshofen free stretch
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Bavarian Danube gauges and their forecasts — opens HND Bayern
Bavaria's own gauge list for the Danube down to Passau. Every gauge page shows the measured level, and the gauges Bavaria forecasts add a twelve-hour forecast and a two-day trend.
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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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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Bavarian Danube gauges and their forecasts — opens HND Bayern
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
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Main-Danube Canal 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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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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ELWIS — German federal waterways notices and navigation information
Rain in the next 14 days
Rhine above Kaub — representative catchment precipitation.
3 days: 1.2 mm · 7 days: 15.3 mm · 14 days: 15.3 mm — forecast precipitation.
Rain forecast by Open-Meteo (commercial licence), model icon_seamless · fetched 6 September 2026 at 19:21 UTC · covering 14 days, 6 September to 19 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.