South Bohemia consists of the South Bohemian Basin, České Budějovice Basin and Třeboň Basin. The Bohemian Forest (Czech: Šumava) is a low range of mountains situated in the south-west. Other highlands that can be found in the region are the Brdy Highlands (in the very northern part of the region), the Central-Bohemian Highlands (Czech: Středočeská vrchovina, in the northern part of the region), the Bohemian-Moravian Highlands (Czech: Českomoravská vrchovina, eastern part of the region) and the Novohradské Mountains (in the south of the region). The highest elevation in the region is the 1,378-metre (4,521 ft) high Plechý in the Bohemian Forest, the lowest elevation with 350 metres above sea level is at the Orlík Dam.
The region is located in the drainage basin of Vltava river. Other significant rivers are Malše, Lužnice, Otava, Nežárka and
Lomnice. South Bohemia is famous for its countless ponds. In the past, more than seven thousand ponds were established across the region. With its 489 ha Rožmberk is the largest one, followed by Bezdrev (450 ha) and Horusice pond (415 ha). In the 20th century, a series of dams was constructed on Vltava river. Lipno Dam is the largest dam in the Czech Republic and has area of 4,870ha. Other dams in the region are Orlík Dam, Římov Dam and Hněvkovice Dam.
A big part of the Šumava National Park is situated in South Bohemia. The Bohemian Forest is a popular holiday destination because it is excellent hiking country. Most interesting natural and cultural sights are connected with more than 500 km of summer marked trails and many bike trails.