The Třeboň Basin () is a

structural basin A structural basin is a large-scale structural geology, structural formation of rock stratum, strata formed by tectonics, tectonic warping (Fold (geology), folding) of previously flat-lying strata into a syncline fold. They are geological dep ...

and geomorphological mesoregion of the Czech Republic. It is located in the

South Bohemian Region The South Bohemian Region () is an administrative unit (''Regions of the Czech Republic, kraj'') of the Czech Republic, located mostly in the southern part of its historical land of Bohemia, with a small part in southwestern Moravia. The western ...

and it is named after the town of

Třeboň Třeboň (; ) is a spa town in Jindřichův Hradec District in the South Bohemian Region of the Czech Republic. It has about 8,300 inhabitants. The historic town centre with the castle complex is well preserved and is protected as an Cultural monum ...

. It is known for its fishpond system.

Geomorphology

The Třeboň Basin is one of the mesoregions of the South Bohemian Basins (the second being the

České Budějovice Basin The České Budějovice Basin () is a structural basin and Geomorphological division of the Czech Republic, geomorphological mesoregion of the Czech Republic. It is located in the South Bohemian Region and it is named after the city of České Bud� ...

) within the

Bohemian Massif The Bohemian Massif ( or ''Český masiv'', or ''Böhmisches Massiv'') is a geomorphological province in Central Europe. It is a large massif stretching over most of the Czech Republic, eastern Germany, southern Poland and northern Austria. Th ...

. It is further subdivided into the microregions of Lišov Threshold, Lomnice Basin and Kardašova Řečice Uplands. Relief varies across the territory. In the middle the relief is flat, in the east there is a flat hilly relief, and in the west there is an asymmetrical ridge with a rugged hilly relief. The highest part of the territory is the western part, in Lišov Threshold, where altitudes are above . There is also the highest peak of the territory, Baba at above sea level.

Geology

The Třeboň Basin was

tectonically Tectonics ( via Latin ) are the processes that result in the structure and properties of the Earth's crust and its evolution through time. The field of ''planetary tectonics'' extends the concept to other planets and moons. These processes ...

formed during the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

. It is filled with sediments from the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...

and

Neogene The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of th ...

periods, in the west there are sediments from the

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

period, on the edge there is a Moldanubicum.

Geography

The Třeboň Basin has an area of and an average elevation of . The territory has a slightly elongated shape from north to south and stretches from the town of

Soběslav Soběslav (; ) is a town in Tábor District in the South Bohemian Region of the Czech Republic. It has about 7,100 inhabitants. The historic town centre is well preserved and is protected as an Cultural monument (Czech Republic)#Monument zones, ur ...

in the north to the Czech-Austrian border in the south. The border passes around

České Budějovice České Budějovice (; ) is a city in the South Bohemian Region of the Czech Republic. It has about 97,000 inhabitants. The city is located in the valley of the Vltava River, at its confluence with the Malše. České Budějovice is the largest ...

in the west and

Jindřichův Hradec Jindřichův Hradec (; ) is a town in the South Bohemian Region of the Czech Republic. It has about 21,000 inhabitants. The historic town centre is well preserved and is protected as an Cultural monument (Czech Republic)#Monument reservations, urb ...

in the east, both cities are already outside the territory. The area is densely interwoven with many watercourses. The largest rivers are Lužnice and

Nežárka The Nežárka (; ) is a river in the Czech Republic, a right tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly i ...

. Part of the territory also belongs to the

Vltava The Vltava ( , ; ) is the longest river in the Czech Republic, a left tributary of the Elbe River. It runs southeast along the Bohemian Forest and then north across Bohemia, through Český Krumlov, České Budějovice, and Prague. It is com ...

river basin. The Vltava briefly crosses the west of the territory. Despite the area, there are no larger settlements, and the territory is sparsely populated. The largest towns in the Třeboň Basin are

Veselí nad Lužnicí Veselí nad Lužnicí (; ) is a town in Tábor District in the South Bohemian Region of the Czech Republic. It has about 6,500 inhabitants. It lies at the confluence of the Lužnice and Nežárka rivers. Administrative division Veselí nad Luž ...

Lišov Lišov (; ) is a town in České Budějovice District in the South Bohemian Region of the Czech Republic. It has about 4,700 inhabitants. Administrative division Lišov consists of 13 municipal parts (in brackets population according to the 2021 ...

, Suchdol nad Lužnicí and

České Velenice České Velenice (, , 1938–1945: ''Gmünd III'') is a town in Jindřichův Hradec District in the South Bohemian Region of the Czech Republic. It has about 3,700 inhabitants. It lies on the border with Austria and is adjacent to the town of Gmü ...

Ponds

The Třeboň Basin is known for its fish ponds, which were established in the region since Middle Ages. There are the largest ponds in the Czech Republic, including Rožmberk, Horusický rybník, Dvořiště, Velký Tisý rybník and Záblatský rybník.

Rožmberk Pond Rožmberk is a fish pond in the South Bohemian Region of the Czech Republic. It was founded at the end of the 16th century and is part of the Třeboň fishpond system. With an area of , it is the largest fish pond in the world. Geography and p ...

is the largest pond in the country and the largest fish pond in the world with surface area of . It was built between 1584 and 1590.

Nature

A large part of the basin (about ) is protected as the Třeboňsko Protected Landscape Area. Since 1977, Třeboňsko also has been one of six Czech UNESCO MAB biospheric reserves.

Gallery

Chlumek (Třeboňská pánev) 01 (cropped).jpg, Chlumek hill near Nová Ves Hlincová Hora - aerial view, Budweis 01.jpg, Aerial view of Hlincová Hora Pohled-do-vytěženého-rašeliniště-x.jpg, Červené blato National Nature Reserve with excavated peat bog Novořecké močály 2.JPG, Novořecké močály Nature Reserve

References

External links

Třeboňsko Protected Landscape Area
{{DEFAULTSORT:Trebon Basin Landforms of the Czech Republic South Bohemian Region