On the rhine: General information
The Rhine river with a length of about 1320 km is one of the longest and most important rivers in Europe. Since roman times when the rhine river marked the northern border of the roman empire it is an important trading route. The Rhine is navigable for a length of about 885 km and flows through Swiss, Austria, Germany and the Netherlands and is a boundary river of France and Liechtenstein. The spring of the rhine is in the canton of Graubuenden in the Swiss Alps, from the source to the estuary it is divided in the following parts:
- Headwaters
- Alps rhine
- Lake Constance
- High Rhine
- Upper Rhine
- Middle Rhine
- Lower Rhine
- Delta
Headwaters
Alps Rhine
Near Tamins the vorder rhine and hinter rhine unify to the alps rhine, which changes its direction near Chur towards north. The length of the alps rhine is around 100km, flowing between 599 and 396m above sea level. The estuary of the alps rhine in the Lake Constance forms an inland delta, bounded by the old rhine in the east and the lower rhine breakthrough (unterer Rheindurchstich) in the east. This landscape is called rhine delta and is an important nature and bird conservation area in Austria.
Lake Constance
The Lake Constance consists of the Lake Superior (Obersee), the Lake inferior (Untersee) and the Lake Rhine (Seerhein) in the northern Alps foreland. These two independent lakes are connected by the river rhine and bordered by Austria, Switzerland and Germany.
It is situated 395 above sea level and with an area of 571km Central Europe's third largest freshwater lake after Lake Balaton and Lake Geneva. The widest point is 14km and it measures 63km length, the greatest depth is 252m.
High Rhine
The term High Rhine (Hochrhein) has come up in the 19th century, especially geologists where anxious to define the High Rhine from the Upper Rhine. This part of the rhine river begins at the outflow of the Lake Constance near Stein am Rhein and ends at the beginning of the Upper Rhine in Basel, passing a height difference from 395m to 252m above seal level.
Upper Rhine
The Upper Rhine starts at Basel around rhine kilometre 170 and ends at Bingen after 350km at rhine kilometre 520. The rhine river is canalised most of its way from Basel downstream to Iffezheim, passing 10 canal locks and water gates with a total height difference of 134 m in 180km.
The first larger city on the rhine river is Basel, at the beginning of the rhine rift, an about 300km long and 40km wide valley where the rhine copes a height difference from 252m to 76m above sea level.
Middle Rhine
There are about 40 fortresses and castles on a 65km long stretch between Koblenz and Bingen, the biggest concentration of castles in such a small area worldwide. These fortification had been built by Landgraves, Dukes, Counts, and the archbishopric of Cologne, Mainz and Trier on strategic positions to collect river toll duties, making the middle rhine valley a long contested region. Although their positions on hilltops where chosen for strategic reasons they also had representative status.
Lower Rhine
The lower rhine begins at the estuary of the river Sieg near Bonn at a height of 50m above sea level. The most important tributaries o he lower rhine are the rivers Ruhr and Lippe. The riverbanks are intense populated and industrialised, especially in Cologne, Duesseldorf and the rest of the Ruhr area. The biggest inland harbour of europe is in Duisburg, the longest suspension bridge of germany is in Emmerich, where the rhine river is about 400m wide.
The biggest cities on the rhine and its Rhine kilometre (Rheinkilometer) and riverside positions are:
- Basel 167km, 166 000 inhabitants, left
- Strasbourg 294km, 277.000, left
- Karlsruhe 359km, 286 000, right
- Mannheim 425km, 308 000, right
- Ludwigshafen 425km, 164 000, left
- Mainz 499km, 196 000, left
- Wiesbaden 503km, 275 000, right
- Koblenz 591km, 106 000, left
- Bonn 655km, 315 000, left
- Cologne 688km, 991 000 , left
- Leverkusen 699km, 161 000, right
- Neuss 740km, 153 000, left
- Düsseldorf 743km, 578 000, right
- Krefeld 762km, 241 000, left
- Duisburg 777km, 497 000, right
- Nimwegen 884km, 161 000, left
- Rotterdam 100km, 586 000

The most important tributaries of the rhine river are:
- Birs 164.5km 15.4m³/s
- Elz 253.5km 21.5m³/s
- Kinzig 298.2km 23m³/s
- Ill 311.2km 39.8m³/s
- Neckar 428.2km 137m³/s
- Main 496.6km 225m³/s
- Nahe 529km
- Lahn 585.7km
- Moselle 592.3km 290m³/s
- Ahr 629.4km
- Sieg 659.4km 52m³/s
- Wupper 703.3km 15m³/s
- Ruhr 780.1km 79m³/s
- Lippe 814.5km 46m³/s
Hotels
Hotels in Germany are distinguished in different quality ratings from one to five stars. The participation in this system is optional. About 10% of the hotel rooms are ranged with one or two stars, 60% are three star hotels, 28% of the hotels have 4 stars, and the remaining 2% are luxury hotels rated with 5 stars.
To give you a more detailed look we put the requirements for hotels that participate in this quality rating system on our hotels site.
Rhine water levels
You can get an overview on the actual rhine water levels (and some other data) from ELWIS - the `Electronic Waterway Information System`. Another source for rhine water levels is the flooding/ high water information service from the federal state Rhineland-Palatinate in Germany.
The flood/ high water level I marks the beginning of a special flooding report system, flood level II stops any shipping movements on the section of the rhine river where the flooding occurs. Below is a list with the flood levels of the most important rhine river water levels, together with the highest water levels that occurred in history:
- 700 cm flood water level I / 790cm flood water level II
- 1058 cm (12. may 1999)
- 1034 cm (09. august 2007)
- 1026 cm (19. may 1994)
- 899 cm (10. april 2006)
- 896 cm (23. august 2005)
- 620 cm; 750 cm
- 884 cm (14. may 1999)
- 859 cm (26. may.1983)
- 855 cm (16. february 1990)
- 853 cm 22. february 1999)
- 847 cm (10. april 1983)
- 620 cm; 730 cm
- 886 cm (31. december 1882)
- 867 cm (18. january 1955)
- 858 cm (27. may 1983)
- 855 cm (15. may 1999)
- 840 cm (26. may 1978)
- 650 cm; 760 cm
- 917 cm (29. december 1882)
- 876 cm (12. january 1955)
- 859 cm (27. march 1988)
- 858 cm (28. may 1983)
- 850 cm (25. may 1978)
- 440cm; 650 cm
- 822 cm (29. december 1882)
- 746 cm (17. january 1955)
- 741 cm (2. november 1980)
- 729 cm (27. march 1988)
- 729 cm (14. march 1896)
- 475 cm; 630 cm
- 795 cm (28. november 1882)
- 793 cm (05. january 1883)
- 770 cm (29. march 1988)
- 737 cm (27. february 1970)
- 733 cm (16. january 1920)
- 350 cm; 490 cm
- 619 cm (29. march 1988)
- 617 cm (05. january 1883)
- 613 cm (28. november 1882)
- 612 cm (27. february 1970)
- 600 cm (16. january 1920)
- 460 cm; 640 cm
- 911 cm (02. february 1893)
- 825 cm (05. january 1883)
- 819 cm (29. march 1988)
- 811 cm (28. november 1882)
- 793 cm (27. february 1970)
- 470 cm; 650 cm
- 949 cm (23. december 1993)
- 930 cm (01. january 1926)
- 923 cm (16. january 1920)
- 922 cm (30. january 1990)
- 920 cm (28. november 1882)
- 550 cm; 760 cm
- 1051 cm (23. december 1993)
- 1043 cm (01. january 1926)
- 1040 cm (28. november 1882)
- 1030 cm (16. january 1920)
- 1028 cm (30. january 1995)
- -; 770 cm
- 1020 cm (28. november 1882)
- 1013 cm (23. december 1993)
- 1010 cm (01. january 1926)
- 1006 cm (30. january 1995)
- 998 cm (16. january 1920)
- 620 cm; 830 cm
- 1070 cm (01. january 1926)
- 1069 cm (30. january 1995)
- 1063 cm (24. december 1993)
- 1059 cm (16. january 1920)
- 1053 cm (28. november 1882)
- 710 cm; 880 cm
- 1110 cm (02. january 1926)
- 1093 cm (29. november 1882)
- 1089 cm (16. january 1920)
- 1053 cm (02. january 1883)
- 1032 cm (31. january 1995)
- -; 1060 cm
- 1233 cm (03. january 1926)
- 1206 cm (03. january 1883)
- 1199 cm (17. january 1920)
- 1192 cm (30. november 1882)
- 1160 cm (02. january 1920)
- 700 cm; 870 cm
- 985 cm (03. january 1926)
- 984 cm (31. january 1995)
- 952 cm (25. december 1993)
- 952 cm (18. january 1920)
- 951 cm (04. january 1883)