The Moolavar is Vaiyankaatha Perumal or Jagathrakshagan, Uyyavandhar seen in standing posture facing East. The Devas worshipped the Lord along with (koodi) Nandaka Munivar and hence the name Koodalur. The river Cauvery is said to have regained her glory by visiting this sthalam. It is believed that once this temple was submerged in the Cauvery floods & the current structure was rebuilt by rani Mangammal.
Thaayaar - Padmaasani, Pushpavalli.
Utsavar - Vaiyankaatha Perumal or Jagathrakshagan with a sengol in his hand.
Theertham - Chakra Theertham, Cauvery river.
Thirumangaialwar - 1358 - 1367
Total of 10 Paasurams