An ascetic performs yoga at his makeshift tent near the banks of Sangam -the confluence of the Ganges, Yamuna and mythical Saraswati river during the Magh Mela festival in Allahabad on January 28, 2022. (Photo by Sanjay Kanojia/AFP Photo)

A woman rides her horse in the River Eden on Friday June 10, 2022, on Day 2 of the Appleby Horse Fair, the annual gathering of gypsies and travellers. (Photo by Owen Humphreys/PA Wire Press Association)

A boy makes his way on a bicycle along a flooded road near the Ganges River in Allahabad on August 23, 2022, as water levels rose following monsoon rainfalls. (Photo by Sanjay Kanojia/AFP Photo)

A dead fish lies on the bank of Oder River on the German-Polish border, in Brieskow-Finkenheerd, Frankfurt (Oder), Germany, August 11, 2022. Authorities are looking into the cause of the mysterious fish deaths. (Photo by Annegret Hilse/Reuters)

Police officers intervene as a man attempts to hang himself during a protest to oppose the sharing of river water with a neighboring state, in Bengaluru, India on September 26, 2023. (Photo by Reuters/Stringer)

Jaison Vargas, crocodile tour guide, takes a picture of an American crocodile (Crocodylus acutus) during a tour at the Tarcoles river, in Tarcoles, Garabito municipality, Costa Rica, on March 31, 2022. Crocodile tours in the estuary of the Tarcoles River are a popular attraction for visitors to Costa Rica's Pacific coast, as the area gets back on its feet after being shaken by the pandemic. The river is home to nearly 500 species of birds and some 2,000 American crocodiles, many of which have been named after famous people. (Photo by Luis Acosta/AFP Photo)

In this November 30, 2017 photo, Douglas scoops up mud from the bottom of the polluted Guaire River, in search of gold and anything valuable he can sell, in Caracas, Venezuela. Some stretches of the river smell of sewer while others emit a toxic odor of fuel, a stench that stays in ones nose for hours after leaving the water. (Photo by Ariana Cubillos/AP Photo)

Fishermen jump into a small river to catch trout as they celebrate Fischertag (Fisherman's Day) in downtown Memmingen, southern Germany, July 25, 2015. The annual Fisherman's Day (Fischertag) tradition goes back to the year of 1465 where every fisherman who were born in Memmingen tries to catch trout from the river. The participant who catches the biggest trout will be named the “Fisher King” for one year. (Photo by Michaela Rehle/Reuters)