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Thaya in Břeclav

Thaya in Břeclav

Water code CZ : 4-14-02-001
location Czech Republic ,
Lower Austria ( Austria )
River system Danube
Drain over March  → Danube  → Black Sea
confluence from German and Moravian Thaya in Raabs
48 ° 50 ′ 52 ″  N , 15 ° 29 ′ 25 ″  E
Source height at the confluence in Raabs:  410  m above sea level A.
muzzle near Hohenau an der March in the March coordinates: 48 ° 36 '59 "  N , 16 ° 56' 24"  E 48 ° 36 '59 "  N , 16 ° 56' 24"  E
Mouth height 147.5  m above sea level A.
Height difference 262.5 m
Bottom slope 1.1 ‰
length from Raabs: 235.4 km
Catchment area 12,771.8 km²
Drain MQ
43.9 m³ / s
Left tributaries Svratka (Schwarzach)
Right tributaries Pulkau
Reservoirs flowed through Nové Mlýny reservoir , Vranovská přehrada
Medium-sized cities Břeclav

The Thaya ( Czech Dyje ) is a tributary of the March . It has a length of 235.4 kilometers and a very winding course. A large part of it runs along the state border between Austria ( Lower Austria ) and the Czech Republic ( Moravia ), but rarely forms the exact border.


The name of the water is derived from the East Germanic term * Dūhja, which means something like "mud" or "swamp".

According to another explanation, the name of the water comes from the Indo-European root * dheu- "flow", which was transformed into dujas during Roman times , from which the Slavs in the 7th or 8th century derived the forerunner of the Czech name Dyje . The Bavarian settlers of the Marcha orientalis took over the name Dyja and corrupted him to Taja . The Chronica Boemorum mentions the Czech river Dyje in 1082.

Earlier spellings are also Taya or Taja .


Upper course

Charles Sealsfield Memorial near his home village of Poppitz
Autumn at the reservoir near Znojmo

It has two source rivers, the German Thaya and the Moravian Thaya , which unite in Raabs . The Deutsche Thaya rises in the Waldviertel near Schweiggers at an altitude of 657.5  m and flows through Vitis , Schwarzenau , Waidhofen an der Thaya , Thaya , Dobersberg , and Karlstein an der Thaya . The most important tributary of the German Thaya is the Thauabach . At 76 km, it is the longer of the two source rivers.

The Moravian Thaya ( Moravská Dyje in Czech ) rises in the Bohemian-Moravian Highlands . The river runs along Žatec and Dačice to Austria, where it joins the German Thaya after 68 km in Raabs.

Middle course

The Alte Bockgraben is the former river bed of the Thaya.

In the middle reaches the Thaya has dug itself deep into the landscape (height difference of the slopes about 100 m). This distinctive profile is the construction of numerous castles and palaces high above its banks favored ( Castle Karlstejn , castle ruins Kollmitz , Drosendorf , Hardegg Castle , Ruin Kaja , Burg Raabs an der Thaya ).

The Vranovská přehrada ( Vranov dam ) is located near Frain . The Thayatal National Park was established in the area around Hardegg, on both the Austrian and the Czech side .

Lower course

In the lower reaches from Znojmo ( Znojmo ) the river is dammed in several places, the largest reservoirs are those of Nové Mlýny ( Neumühl ) between Dolní Dunajovice ( Untertannowitz ) and Hustopeče ( Auspitz ), into which the Svratka and the Jihlava join immediately after their confluence River Ivaň . In Znojmo the river is crossed by the Znojmo Railway Bridge, known as a technical monument .

The Thayamühlbach is branched off just after Znaim and flows back into the Thaya after Laa an der Thaya . The park of Lednice Castle ( Lednice ) was created by the Thaya River was diverted. A large lake with many islands was created.


At Hohenau , at the main boundary stone XI / 6 at 147.5  m above sea level. A. flows the Thaya into the March.

Important places on the Thaya

Accidents and floods

In May 1936, when an overloaded cable ferry went down in Nové Mlýny ( Neumühl ), 31 children from Rakvice ( Rakwitz ) drowned on their school trip.

After the Thaya had already caused the highest flood in the last 100 years in March 2006, the level rose to its highest value within a few hours during the night due to heavy rain in the upper reaches of both the German and the Moravian Thaya for 300 to 400 years. 1500 buildings were flooded in around 70 locations. The city of Raabs was hardest hit , where the water level of the German Thaya rose to 6.60 meters. The normal level is 1.20 m, at the flood of 2002 it was 6.20 m.


Web links

Commons : Thaya  - collection of images, videos and audio files

Individual evidence

  1. BMLFUW (Hrsg.): Area directory of the river areas: Danube area from the Enns to the Leitha. In: Contributions to Austria's Hydrography Issue 62, Vienna 2014, p. 142. PDF download , accessed on July 8, 2018.
  2. Heinz Wiesbauer and Manuel Denner: Wetlands - Natural and Cultural History of the Weinviertel Waters , Vienna 2013 (published by the Federal Ministry for Agriculture, Forestry, Environment and Water Management and the Office of the Lower Austrian Provincial Government, Department of Water Management)
  3. Toulky Českém aneb kde se prtaly postole
  4. ^ Pavel Borský: Kostel sv. Leonarda v Mušově . In: Průzkumy památek , 1998, pp. 21–46. Archived from the original on February 19, 2014. Retrieved February 16, 2013. 
  5. ^ Wenzel Carl Wolfgang Blumenbac: Latest regional studies of Austria under the Ens, Volume 1. Carl Reichard's Verlag, Güns 1834, p. 106