What Causes Foam on Rivers?

Toxic foam blights river crucial to Brazil's biggest city

This is what causes toxic white foam to float on surface of the Yamuna in Delhi – ThePrint – Select

Science of the Seasons: Bubbling curiosity — Most water foam is no cause for concern

A Western River with too Much Water? ICS Explores - Innovative Conservation Solutions

PFAS and Foam on Waterways

Froth foam pollution hi-res stock photography and images - Alamy

Foam line - Wikipedia

Toxic Foam in River Yamuna: What Causes It, How It Can Impact Devotees, What Precautions Can Be Taken and More

Here's why foam rises at The Concho River when it rains

Right as Rain – FanningSparks

Polluted River's Foam