Join Date: Aug 2010
Location: Southeastern PA
I don't really know of any public land that would be fenced well enough for a horse, so I can't comment on that.
As far as the water source, unless you walked my horses field, you wouldn't see their stream as it is on the far side of the field and down a hill. I'd imagine the horse has some access to water, or it would not last more than a few days.
The horses hooves and weight would be the most obvious signs of neglect. Are the ribs or back bone showing? If not, I'd imagine that the horse is being cared for, it's just happening outside of the hours that you are seeing it.
edit to add - thanks for the compliment on Lucas.