I've mentioned before an entity (an unseelie fey) "living" on the West side of a nearby lake.
I've heard of numerous people attempting to deal with that nastiness, and getting burnt. I, myself, had only roughly felt around the edges - and I felt it was time to actually say hello to what can only be a batshit crazy fay... after all, it lives in a lake so full of iron that the water is red.
There are a lot of deaths on that side of the lake, particularly in that area. A deep recess beneath the water attracts noodlers (who are stupid enough to go into it), and on the hill above it, local Diabolists have done some nasty handiwork wedging an already fractured spot open just a little further.
This is where She lives. She's been there a very, very, long time - And she's not too pleased about the river being dammed into a lake. I think it was that incident that started the problem. She may have been a Washer (see: Bansidhe and Bean Nighe) prior to the damming, or something similar. The movement of the water was an important part of her existence, and the flow ceased - it became still water, full of mud and muck. So, she became full of mud and muck.
There's a bit of a price to pay when you twist things around. Especially wild things. The price people are now paying is that there is an angry thing that can exert influence over water, and things in the water. Including people. And this is why drunkards drown, noodlers get their hands ripped up, and Satanic dabblers can't get enough of the spot.
She is ravening, and hungry, and very angry.