Markandeya says- ‘River Ganga originates from a place named Dhruvadhar. This particular place is related with Narayana. River Ganga, then falls on the Sumeru Mountain and gets distributed into four main streams. One of these streams flows towards Chaitrartha forest. The name of this particular stream is Sita. The same Sita Ganga enters into the Varunaoda reservoir and from there, it moves towards the ocean and again changes its course to get submerge into that stream of Ganga, which has fallen on the Gandhmadan Mountain and which is known as Alaknanda. Alaknanda after submerging into Mansarovar subsequently entered the Mahadri Himalaya where Lord Shankar held her in His locks of hair. He released river Ganga only at the request of sage Bhagirath.
After being released, river Ganga got subdivided into seven streams and ultimately, all those seven streams submerged into the ocean. The stream of Ganga which originates from the west of Sumeru Mountain is known as Suchakshu. This stream gets submerged in the ocean towards the south, after passing through many mountains. The fourth stream reaches Savita forest after passing through two mountains- Suparshu and Meru. This particular stream is famously known as Bhadrasoma. Bhadrasoma Ganga ultimately get submerged into the ocean after passing through mountains like Shankhkoot and Vrishabh.