Psalm 78:44

And He turneth to blood their streams, And their floods they drink not.

Psalm 105:29

He hath turned their waters to blood, And putteth to death their fish.

Exodus 7:17-21

Thus said Jehovah: By this thou knowest that I am Jehovah; lo, I am smiting with the rod which is in my hand, on the waters which are in the River, and they have been turned to blood,

Revelation 16:3-6

And the second messenger did pour out his vial to the sea, and there came blood as of one dead, and every living soul died in the sea.

Treasury of Scripture Knowledge

Summary

And had turned their rivers into blood; and their floods, that they could not drink.

Bible References

General references

Psalm 105:29
He hath turned their waters to blood, And putteth to death their fish.
Exodus 7:17
Thus said Jehovah: By this thou knowest that I am Jehovah; lo, I am smiting with the rod which is in my hand, on the waters which are in the River, and they have been turned to blood,
Revelation 16:3
And the second messenger did pour out his vial to the sea, and there came blood as of one dead, and every living soul died in the sea.