Thaya

Thaya
Dyje
Thaya; Dyje
	Thaya in Břeclav
Location
Countries	Austria; Czech Republic;
Physical characteristics
Source
• location	German Thaya and Moravian Thaya confluence at Raabs
• elevation	410 m (1,350 ft)
Mouth
• location	Morava
• coordinates	48°37′01″N 16°56′25″E / 48.6170°N 16.9402°E
• elevation	148 m (486 ft)
Length	223.9 km (139.1 mi)
Basin size	12,772 km2 (4,931 sq mi)
Discharge
• average	43.9 m3/s (1,550 cu ft/s)
Basin features
Progression	Morava→ Danube→ Black Sea

The Thaya (Czech: Dyje [ˈdɪjɛ]) is a river in Central Europe, the longest tributary to the river Morava. Its drainage basin is 12,772 km² (4,931 sq mi).^[2] Its length is 224 km (139 mi) (322 km (200 mi) with its longest source river German Thaya).^[1] It 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 an der Thaya.

The confluence of Thaya and Morava is the southernmost and the lowest point of Moravia.

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.

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 Name	Dimension Level Altitude	Q_av	Q₁₀₀	Q_max.	Power Station	Type	Q_pp
Vranov	348.45	9.74m³s⁻¹	260m³s⁻¹	364m³s⁻¹	18.9 MW	Conventional	45m³s⁻¹
Znojmo	225.6	10.25m³s⁻¹	280m³s⁻¹	379m³s⁻¹	1.4 MW	run-of-the-river	12m³s⁻¹
Nove Mlyny I (upper reservoir)	171.4	13.3m³s⁻¹	290m³s⁻¹	see lower reservoir	N/A	N/A	N/A
Nove Mlyny II (middle reservoir)	170.35	40.9m³s⁻¹	see lower reservoir	see lower reservoir	N/A	N/A	N/A
Nove Mlyny III (lower reservoir)	170.35	40.9m³s⁻¹	820m³s⁻¹	657m³s⁻¹	2.4 MW	run-of-the-river	48m³s⁻¹