[1] The basin is a tectonic depression limited mostly by distinctive fault slopes, filled with slightly undulating to flat relief at a height of 380–410 m above sea level, which is the result of erosion and denudation processes after the emptying of lakes in the Neogene.

The surface of the České Budějovice Basin is made up mainly of Late Cretaceous and Neogene formations.

Extensive accumulation forms like gravel-sand deposits, loess clay, wide alluvial floodplains and peat bogs are typical for the basin.

[2] The České Budějovice Basin has an area of 640 km2 (250 sq mi) and an average elevation of 408 m (1,339 ft).

[1][2] The České Budějovice Basin is known for large amount of fish ponds, which were established in the region since Middle Ages.