Along with its bigger namesake in the South, the Kaveri river of Madhya Pradesh has been mentioned in the Matsya and the Kurma Puranas.

[2] The Matsya and the Padma Puranas declare:[2] The junction of the Kaveri and Narmada is famed throughout the world; it destroys all sins; one should bathe there because the Kaveri is very sacred and the Narmada is a great river; whatever benefit a man may gain between the Ganges and Yamuna (that is, at Prayaga), the same accrues to him when he bathes at the Kaveri-sangama.

According to the Matsya Purana, Kubera performed a tapas in honour of Shiva at the confluence of Kaveri and Narmada, which made him the lord of yakshas.

[3] The Kurma Purana also similarly praises the confluence, declaring that it destroys guilts.

[4] The Agni Purana also mentions a Kaveri sangama, which F. E. Pargiter identifies with the Kaveri-Narmada confluence.