The protests, which erupted after the Supreme Court refused to interfere with orders of the Cauvery Water Management Authority and the Cauvery Water Regulation Committee directing the state to release 5,000 cusecs of water to neighbouring Tamil Nadu, have intensified.
The bandh has been called by pro-Kannada and farmers' organisations, protesting the Mahadayi Water Dispute Tribunal's interim order rejecting the state's petition seeking 7.56 tmcft for drinking water projects.
Normal life in Karnataka is likely to be affected on Saturday as pro-Kannada outfits have called for a statewide dawn-to-dusk bandh to protest Tamil Nadu's opposition to Mekedatu drinking water project across the inter-state river Cauvery.
Rail and road blockade, demonstrations, and impromptu rallies by the Opposition marked the shutdown in the state affecting normal life to some extent.
A bandh to protest against the release of Cauvery waters to Tamil Nadu has brought Karnataka to a standstill on Friday