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Context

Environmentalists have raised alarm over an alarming increase in pollution in the Sowparnika river, which flows beside the Kollur Mookambika temple.

About Sowparnika river

• Location: It is a west flowing river in the state of Karnataka. The Sowparnika River, also known as the Souparnika River, is a significant waterway in the Udupi district of Karnataka, India. 
• Flow: It is around dense green forest of Western Ghat.
• Origin: it originates from the kodachadri hills in the western ghat
• Course: It flows through Byndoor taluk passing near the famous Mookambika temple in Kollur.
• Ultimately it drains into Arabian sea.
• This river has mythological significance. As per legend, garuda (lord Vishnu’s divine bird and vehicle of Lord Vishnu) performed penance on the riverbanks, which is how it got its name "Souparnika" (named after "Suparna," another name for Garuda). 
• A unique feature of the Souparnika River is observed near near Maravanthe Beach, the river runs parallel to the Arabian Sea, separated by a narrow strip of land.
• This rare geographical phenomenon offers a picturesque landscape, making it a popular spot for tourists and photographers.
• The Souparnika River is joined by several tributaries, including the Varahi, Kedaka, Chakra, and Kubja rivers, which converge to form the Panchagangavalli River before merging into the Arabian Sea.

Sources:

THE TIMES OF INDIA