Although I live within miles of the (naturally orange, "red" dirt-muddy) Red River in TX, AR & LA, I totally missed those "blood-red" rivers!.
For some reason, they bring to mind the beautiful Animas River in Colorado --that turned yellow after the EPA dumped tons of toxic mine tailings into it:
Back in my consulting days, I had a small, old New England yarn-dyeing company as a client. They were known locally for several "colorful 'oopsies'" like the ones depicted (but, not, always red ones...)
IOW, I see the hand of Man -- not the hand of God -- in those images...
~~~~~~~~~~~~~
My guess as to the increased frequency of such images: 'most everyone nowadays has a phone -- and most phones have cameras...
TXnMA
That there Red River out in cotton-growing Central and West Texas runs “Longhorn Red”. UT school colors.
The color was developed to duplicate the iron rich soil of the region.
This time of year, I kinda miss seeing those huge open fields of perfectly straight plow furrows.
I “had” a photo of a classic West Texas dust storm that hit us in Midland. Taken from a weather plane (Piper?) above and in front of the advancing wall of dust. Spectacular “burnt umber” red.