The Mahadayi/Mandovi River, also known as Mahadayi or Mhadei’ river, is described as the lifeline of the Indian state of Goa. The river has a length of 77km, 29km in Karnataka and 52km in Goa. It originates from a cluster of 30 springs at Bhimgad in the Western Ghats in the Belgaum district of Karnataka. The river has a 2,032 km2 catchment area in Karnataka and a 1,580 km2 catchment area in Goa. With its cerulean waters, Dudhsagar Falls and Varapoha Falls, it is also known as the Gomati in a few places. The Mandovi and the Zuari are the two primary rivers in the state of Goa.The Mandovi enters Goa from the north via the Sattari Taluka in Goa and from Uttara Kannada District of Karnataka near the Castle Rock Rly. Stn. The Mandovi flows through Belgaum, Uttara Kannada in Karnataka and Cumbarjua, Divadi and Chodné in Goa, eventually pouring into the Arabian Sea. Mandovi joins with the Zuari at a common point at Cabo Aguada, forming the Mormugao harbour. Panaji, the state capital and Old Goa, the former capital of Goa, are both situated on the left bank of the Mandovi. The river Mapusa is a tributary of the Mandovi.
https://www.youtube.com/watch?v=WLc5tJRdztA. The address of Mandovi River, Goa is Betim – Penha de Franca – Pomburpa – Quitla – Aldona
It's in Betim – Penha de Franca – Pomburpa – Quitla - Aldona