Kollidam River: Origin, Cauvery Delta, Geography & Important Facts

UPSC Reference Category: Geography

Key Facts

  • The Kollidam/Coleroon is the northern branch of the Cauvery River.

  • The Cauvery divides near the Upper Anaicut (Mukkombu) into:

    • Northern branch → Kollidam

    • Southern branch → Cauvery

  • It flows through the Cauvery delta region of Tamil Nadu.

  • It is important for:

    • Irrigation

    • Delta agriculture

    • Flood management

    • Wetland ecosystems

Tamil Nadu's river documentation identifies Kollidam as a branch of the Cauvery system in the delta.

Key Pointer

Cauvery → Upper Anaicut → Kollidam + Cauvery