Tap a city for its water, or Tab then Enter. Straight lines join cities on different rivers.
Basel
Day 1 · Tuesday 8 September · Switzerland
The ship is in port on this day. Our record holds no river transit for it, so there is no stretch of river to read.
In port
The ship is in port on this day, and our record holds no river transit for it, so there is no stretch of river to read.
The ship is in port on this day. Our record holds no river transit for it, so there is no stretch of river being read here.
Breisach
Day 2 · Wednesday 9 September · Germany
This is a real reading. There is nothing published to measure it against.
333 cm measured
Nothing is published for this stretch to measure the reading against.
| Water level now | 333 cm |
|---|
Water levels are measured at the Maxau gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 3 days away — beyond this forecast's reach
What to check on the official page: BfG does not forecast Maxau. Its daily fourteen-day product covers seven Rhine gauges further downstream, and Maxau is not one of them. The service that does forecast this gauge is Baden-Württemberg's own flood forecast centre, and ELWIS sends you there too.
On that page choose the Vorhersage tab. A solid line runs about two days ahead in centimetres. After that the chart switches to a wider trend estimate with a shaded band around it and a no-rain scenario, reaching roughly a fortnight.
Nothing on that page reaches 9 September yet. The forecast line stops about two days out, and the trend estimate past it is a range, not a date. Come back nearer the day.
Whichever line you read, it is the authority's, not ours. Waterlogged reports measured levels and the record behind them, and publishes no forward level of its own.
Open the official Maxau forecast (German) (opens in a new tab)Strasbourg
Day 3 · Thursday 10 September · France
This is a real reading. There is nothing published to measure it against.
333 cm measured
Nothing is published for this stretch to measure the reading against.
| Water level now | 333 cm |
|---|
Water levels are measured at the Maxau gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 4 days away — beyond this forecast's reach
What to check on the official page: BfG does not forecast Maxau. Its daily fourteen-day product covers seven Rhine gauges further downstream, and Maxau is not one of them. The service that does forecast this gauge is Baden-Württemberg's own flood forecast centre, and ELWIS sends you there too.
On that page choose the Vorhersage tab. A solid line runs about two days ahead in centimetres. After that the chart switches to a wider trend estimate with a shaded band around it and a no-rain scenario, reaching roughly a fortnight.
Nothing on that page reaches 10 September yet. The forecast line stops about two days out, and the trend estimate past it is a range, not a date. Come back nearer the day.
Whichever line you read, it is the authority's, not ours. Waterlogged reports measured levels and the record behind them, and publishes no forward level of its own.
Open the official Maxau forecast (German) (opens in a new tab)Speyer
Day 4 · Friday 11 September · Germany
This is a real reading. There is nothing published to measure it against.
333 cm measured
Nothing is published for this stretch to measure the reading against.
| Water level now | 333 cm |
|---|
Water levels are measured at the Maxau gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 5 days away — beyond this forecast's reach
What to check on the official page: BfG does not forecast Maxau. Its daily fourteen-day product covers seven Rhine gauges further downstream, and Maxau is not one of them. The service that does forecast this gauge is Baden-Württemberg's own flood forecast centre, and ELWIS sends you there too.
On that page choose the Vorhersage tab. A solid line runs about two days ahead in centimetres. After that the chart switches to a wider trend estimate with a shaded band around it and a no-rain scenario, reaching roughly a fortnight.
Nothing on that page reaches 11 September yet. The forecast line stops about two days out, and the trend estimate past it is a range, not a date. Come back nearer the day.
Whichever line you read, it is the authority's, not ours. Waterlogged reports measured levels and the record behind them, and publishes no forward level of its own.
Open the official Maxau forecast (German) (opens in a new tab)Rudesheim
Day 5 · Saturday 12 September · Germany
The measured level is under half of Waterlogged's reference line for this ship.
59 cm below Waterlogged’s reference line
That is how far today's measured level sits below the line we estimate this ship needs. The level it is measured against is our own estimate, not a figure from the cruise line.
| Water level now | 34 cm |
|---|---|
| How we calculate ship needWaterlogged estimates that a river needs to be 2.05m in depth to be navigable by river cruises. A river cruise ship has a draft of approximately 1.60m and we add an additional 0.45m above this. This number is not from official cruise line reports. Ships with smaller drafts or special permission may be able to sail in less water. The figure on the page beside this note is a gauge level, and a gauge level is the height of the water at one measuring station, read from that station's own zero. It is not the depth of the navigable channel, it is not the room left under a ship's keel, and it is not a ship's draft. Our line is a level we compare today's reading with. It is not a depth anybody has measured under your ship. | 93 cm |
| Normal for 12 September | 143 cm |
On the record: For 2015–2025, we checked the eleven days around this date. Kaub’s lowest daily average was 68 cm, in 2022. Today’s reading is 34. That is below every one of the 121 readings in that window.
Water levels are measured at the Kaub gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 6 days away — the daily forecast now reaches it
What to check on the official page: Your call here is now inside the daily forecast's fourteen-day horizon. So this block has switched itself from the six-week bands to the daily product.
The button below opens Kaub's own forecast page directly. Read across to 12 September. Remember the number How we calculate ship needWaterlogged estimates that a river needs to be 2.05m in depth to be navigable by river cruises. A river cruise ship has a draft of approximately 1.60m and we add an additional 0.45m above this. This number is not from official cruise line reports. Ships with smaller drafts or special permission may be able to sail in less water. The figure on the page beside this note is a gauge level, and a gauge level is the height of the water at one measuring station, read from that station's own zero. It is not the depth of the navigable channel, it is not the room left under a ship's keel, and it is not a ship's draft. Our line is a level we compare today's reading with. It is not a depth anybody has measured under your ship..
BfG publishes a range, not a single line — that spread is their own honest uncertainty. Read the whole of it.
Open the 14-day forecast for Kaub (German) (opens in a new tab)WLSN — Water level the ship needs (93 cm)
BfG’s own 14-day forecast: their low-to-high range and middle line · BfG issued this forecast: 2026-09-05 GMT+1 · Bundesanstalt für Gewässerkunde (BfG)
BfG’s own 6-week outlook: one block for each whole published week · 3 of 4 published weeks reach beyond the scale of this frame and are not drawn · BfG issued this forecast: 2026-09-03 · Bundesanstalt für Gewässerkunde (BfG)
Koblenz
Day 6 · Sunday 13 September · Germany
The measured level is under half of Waterlogged's reference line for this ship.
59 cm below Waterlogged’s reference line
That is how far today's measured level sits below the line we estimate this ship needs. The level it is measured against is our own estimate, not a figure from the cruise line.
| Water level now | 34 cm |
|---|---|
| How we calculate ship needWaterlogged estimates that a river needs to be 2.05m in depth to be navigable by river cruises. A river cruise ship has a draft of approximately 1.60m and we add an additional 0.45m above this. This number is not from official cruise line reports. Ships with smaller drafts or special permission may be able to sail in less water. The figure on the page beside this note is a gauge level, and a gauge level is the height of the water at one measuring station, read from that station's own zero. It is not the depth of the navigable channel, it is not the room left under a ship's keel, and it is not a ship's draft. Our line is a level we compare today's reading with. It is not a depth anybody has measured under your ship. | 93 cm |
| Normal for 13 September | 142 cm |
On the record: For 2015–2025, we checked the eleven days around this date. Kaub’s lowest daily average was 69 cm, in 2015. Today’s reading is 34. That is below every one of the 121 readings in that window.
Water levels are measured at the Kaub gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 7 days away — the daily forecast now reaches it
What to check on the official page: Your call here is now inside the daily forecast's fourteen-day horizon. So this block has switched itself from the six-week bands to the daily product.
The button below opens Kaub's own forecast page directly. Read across to 13 September. Remember the number How we calculate ship needWaterlogged estimates that a river needs to be 2.05m in depth to be navigable by river cruises. A river cruise ship has a draft of approximately 1.60m and we add an additional 0.45m above this. This number is not from official cruise line reports. Ships with smaller drafts or special permission may be able to sail in less water. The figure on the page beside this note is a gauge level, and a gauge level is the height of the water at one measuring station, read from that station's own zero. It is not the depth of the navigable channel, it is not the room left under a ship's keel, and it is not a ship's draft. Our line is a level we compare today's reading with. It is not a depth anybody has measured under your ship..
BfG publishes a range, not a single line — that spread is their own honest uncertainty. Read the whole of it.
Open the 14-day forecast for Kaub (German) (opens in a new tab)WLSN — Water level the ship needs (93 cm)
BfG’s own 14-day forecast: their low-to-high range and middle line · BfG issued this forecast: 2026-09-05 GMT+1 · Bundesanstalt für Gewässerkunde (BfG)
BfG’s own 6-week outlook: one block for each whole published week · 3 of 4 published weeks reach beyond the scale of this frame and are not drawn · BfG issued this forecast: 2026-09-03 · Bundesanstalt für Gewässerkunde (BfG)
Cologne
Day 7 · Monday 14 September · Germany
The measured level is below the published low-water reference for this stretch.
61 cm below the published low-water reference
That is how far today's measured level sits below the published low-water reference for this stretch — the waterway authority’s own figure, not ours and not the cruise line's.
| Water level now | 78 cm |
|---|---|
| Published An authority's published low-level mark for a stretch. It is not a requirement for your ship. for this stretch | 139 cm |
| Normal for 14 September | 198 cm |
On the record: For 2015–2025, we checked the eleven days around this date. Koeln’s lowest daily average was 115 cm, in 2018. Today’s reading is 78. That is below every one of the 121 readings in that window.
Water levels are measured at the Köln gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 8 days away — the daily forecast now reaches it
What to check on the official page: Your call here is now inside the daily forecast's fourteen-day horizon. So this block has switched itself from the six-week bands to the daily product.
The button below opens Köln's own forecast page directly. Read across to 14 September. Remember the number 139 cm.
BfG publishes a range, not a single line — that spread is their own honest uncertainty. Read the whole of it.
Open the 14-day forecast for Köln (German) (opens in a new tab)WLSN — Water level the ship needs (139 cm)
BfG’s own 14-day forecast: their low-to-high range and middle line · BfG issued this forecast: 2026-09-05 GMT+1 · Bundesanstalt für Gewässerkunde (BfG)
BfG’s own 6-week outlook: one block for each whole published week · BfG issued this forecast: 2026-09-03 · Bundesanstalt für Gewässerkunde (BfG)
Arnhem
Day 8 · Tuesday 15 September · Netherlands
The measured level is below the published low-water reference for this stretch.
61 cm below the published low-water reference
That is how far today's measured level sits below the published low-water reference for this stretch — the waterway authority’s own figure, not ours and not the cruise line's.
| Water level now | 78 cm |
|---|---|
| Published An authority's published low-level mark for a stretch. It is not a requirement for your ship. for this stretch | 139 cm |
| Normal for 15 September | 197 cm |
On the record: For 2015–2025, we checked the eleven days around this date. Koeln’s lowest daily average was 110 cm, in 2018. Today’s reading is 78. That is below every one of the 121 readings in that window.
Water levels are measured at the Köln gauge – German federal waterways gauge service (PEGELONLINE).
Your call here is 9 days away — the daily forecast now reaches it
What to check on the official page: Your call here is now inside the daily forecast's fourteen-day horizon. So this block has switched itself from the six-week bands to the daily product.
The button below opens Köln's own forecast page directly. Read across to 15 September. Remember the number 139 cm.
BfG publishes a range, not a single line — that spread is their own honest uncertainty. Read the whole of it.
Open the 14-day forecast for Köln (German) (opens in a new tab)WLSN — Water level the ship needs (139 cm)
BfG’s own 14-day forecast: their low-to-high range and middle line · BfG issued this forecast: 2026-09-05 GMT+1 · Bundesanstalt für Gewässerkunde (BfG)
BfG’s own 6-week outlook: one block for each whole published week · BfG issued this forecast: 2026-09-03 · Bundesanstalt für Gewässerkunde (BfG)
Amsterdam
Day 9–10 · Wed 16 – Thu 17 September · Netherlands
The ship is in port on this day. Our record holds no river transit for it, so there is no stretch of river to read.
In port
The ship is in port on this day, and our record holds no river transit for it, so there is no stretch of river to read.
The ship is in port on this day. Our record holds no river transit for it, so there is no stretch of river being read here.
What the statuses mean — each one is measured against the level we estimate this ship needs
- Far below the lineThe measured level is under half of Waterlogged's reference line for this ship.
- Below the lineThe measured level is below Waterlogged's reference line for this ship.
- Above the lineThe measured level is at or above Waterlogged's reference line for this ship.
- Lock-controlledLocks hold this water at a working level, so low water is far less likely to affect this stretch. Other things still can.
- No line publishedThis is a real reading. There is nothing published to measure it against.
- No reading yetWe watch a gauge on this stretch. No current reading is on file for it.
- No gauge on this stretchWe watch no gauge on this stretch of river. There is no reading for this day and no line to measure one against.
- In portThe ship is in port on this day. Our record holds no river transit for it, so there is no stretch of river to read.
- Not sailingThe ship does not sail on this day. Your itinerary spends it on land, so no river level applies to it.
The small white boards mark A riverside station that measures the water level in centimetres against a fixed zero point. stations — the places where a reading is physically taken. Each is drawn at its own town's coordinate, which can sit close to the port it serves. Each stretch is coloured by the worst port on it. A gauge level is not the depth of the The navigable channel where ships are meant to pass., not the room under your ship's keel, and not your ship's How deep a ship sits in the water. That depth sets how much water it needs underneath..
Every port, in the order you reach it
This list repeats the map information. It is there for phones, for screen readers and for printing.
Cities are drawn at their true latitude and longitude. The river line is a simplified course, not a navigation chart. Course geometry: Natural Earth (public domain) and © OpenStreetMap contributors, ODbL 1.0.
Do not see your sailing? We do not report cancelled sailings. Tell us which sailing we are missing and we will add it. You can also email info@rivercruisewatch.com with the cruise line, the ship and the dates.