Assumption Parish sink hole environmental impact: Links in OP

Not likely, but the shitload of brine water being released could make it a lil salty...

Nope!! this one is a caveren that is already full of brine. This brine is not just salt water it has a much higher salt content. The caveren can collapse and will make a deep lake. It depends on the caveren profile on wide it could end up being. Lake Peigneur was a salt mine with empty tunnels and caverens. It appears someone screwed up using the well. You have to be careful not to overleach it or this kind of thing can happen. They have companies throughout that area that use saltdomes for storing different types of hydrocarbons. The salt type determines what can be stored in a particiluar dome. If was an old well that had failed you would have a cone of sand form on the surface, if someone had injected something at the same depth. The liquid would travel up the old casing to the surface.. This is all just a WAG, but did stay at a Holiday Express once.