@Hikari_Owari
Water is as bad as concrete if the water isn't ruffled enough. The water tension will break lot if not most of your bones before you finally slow down and then you have to deal with immense shock that likely will make you lose consciousness. Not to mention that atl concrete can't drown you in anything but your own blood.
Snow, trees, soft sand, all of those are miles better choices than water that is still. Moving water would be around the same risk factor as trees, so honestly, just go for the trees, though try to aim in such a way that you aren't hitting the strongest part of a one.
It will hurt horribly, no matter what though, unless it is soft snow or sand, there you have some chance of surviving with minimal injuries.