Rivers are a convenient place to dump a body. Its hard to find where the body went into the water. The water cools the body temperature, obscuring the time of death. It hastens decomposition so evidence like fingerprints are much more difficult to retrieve from the body.
You have been watching “Forensic Files” haven’t you?
Re; #12
Don’t forget the critters feeding on all that free food.
My mother had to identify a cousin who drowned and was in Chesapeake Bay for almost a week. It was not pleasant as lots of the body was already gone.
I’ve also heard it can mask a drug. The person “drowns”
Yep, and it washes off any incriminating fibers and hairs.