Which region does the Cauvery River Basin NOT extend into?

The Cauvery River Basin spans several regions, specifically covering parts of Tamil Nadu, Karnataka, and Kerala, along with the Union Territory of Puducherry. The basin, stretching over 81,155 square kilometers, includes tributaries such as the Harangi, Hemavati, Kabini, Bhavani, Lakshmana Tirtha, Noyyal, and Arkavati, which enrich its extensive network. Notably, Andhra Pradesh does not fall within the catchment area of the Cauvery River, distinguishing it from the other listed regions where the basin is prominently present.