Water in several Russian rivers turned blood red from chemicals:
http://www.interfax.ru/russia/527136Ukrainians believe that is God's plague, because Russians refuse to let Ukraine be free.
This is what the LORD says: By this you will know that I am the LORD: With the staff that is in my hand I will strike the water of the Nile, and it will be changed into blood. The fish in the Nile will die, and the river will stink and the Egyptians will not be able to drink its water. — Exodus 7:17–18