Thaya

The Thaya (Czech: Dyje [ˈdɪjɛ]) is a river in Central Europe, the longest tributary to the river Morava. It is 224 km (139 mi) (322 km (200 mi) with its longest source river German Thaya) long[1] and meanders from west to east in the border area between Lower Austria (Austria) and South Moravia (Czech Republic), though the frontier does not exactly follow the river's course in most parts. Its source is in two smaller rivers, namely the German Thaya (Deutsche Thaya) and the Moravian Thaya (Czech: Moravská Dyje, German: Mährische Thaya), flowing together at Raabs.

Thaya
Dyje
Thaya in Břeclav
Location
Countries
Physical characteristics
Source 
  locationnear Panenská Rozsíčka
  elevation410 m (1,350 ft)
Mouth 
  location
Morava
  coordinates
48.6170°N 16.9402°E / 48.6170; 16.9402
  elevation
148 m (486 ft)
Length223.9 km (139.1 mi) [1]
Basin size13,419 km2 (5,181 sq mi)
Discharge 
  average43.9 m3/s (1,550 cu ft/s)
Basin features
ProgressionMoravaDanubeBlack Sea

Its name means "the inert". There is also a small village which bears the name Dyje, located near Znojmo.

Geography

In its upper reaches, the Thaya flows through deep gorges (Podyjí), along which it passes many castles and chateaus. In Moravia, it has been dammed in several locations.

Thaya gathers waters from the western half of Moravia and the adjacent part of Lower Austria. Its biggest tributaries are Svratka and Jihlava, flowing together into the middle one of the Nové Mlýny reservoirs.

Thaya River near Znojmo

Important cities and towns along the Thaya:

Dams

All the dams are situated in Czech Republic. They are used for irrigation, hydroelectricity and flood protection.

Dam NameDimension Level AltitudeQavQ100Qmax.Power StationTypeQpp
Vranov348,459.74m3s−1260m3s−1364m3s−118.9 MWConventional45m3s−1
Znojmo225,610.25m3s−1280m3s−1379m3s−11.4 WMrun-of-the-river12m3s−1
Nove Mlyny I (upper reservoir)171,413.3m3s−1290m3s−1see lower reservoirN/AN/AN/A
Nove Mlyny II (middle reservoir)170,3540.9m3s−1see lower reservoirsee lower reservoirN/AN/AN/A
Nove Mlyny III (lower reservoir)170,3540.9m3s−1820m3s−1657m3s−12.4 MWrun-of-the-river48m3s−1
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References

  1. Niederösterreich Atlas (Lower Austria)


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