Bengaluru: Kannada groups are divided on the bandh call for Thursday over the Cauvery water dispute due to the improvement in rainfall and the storage position in the river basin reservoirs.Kannada Chaluvali Vatal party founder Vatal Nagaraj, a former MLA, was firm that the state must observe a bandh to protest the regulator's direction to Karnataka to release 12,000 cusecs to Tamil Nadu.Karnataka Associated Management of Schools extended only moral support, asking staff to run schools as usual but wear a black badge in support of the cause.Other pro-Kannada groups, however, reversed their earlier stand, saying they didn't see the need for a bandh given the improved storage and steady water flow into Tamil Nadu due to rains.