The Chongquing section of the Yangtze river in China has turned red. We were first alerted to this by Bill Bishop.
Authorities are investigating the strange occurrence — some are speculating that it's just red silt. Bacteria called Chromatiaceae that thrive in low-oxygen environments are also known to turn massive water bodies red.
Here are some screenshots from Yixia.com:
And Chinese publications have also reported on the phenomenon: