Not sure what the ID of this snake is. Head looks poisonous, but I've never seen a pattern that tight on a north ga poisonous snake before. My first reaction was copperhead. My brain says no on the pattern though.
How big was the snake? It's hard to tell from the pic. My daughter found one in the backyard last night just like that and I have removed (not killed) several just like it over the last couple of years. They were all about 10" - 12" long.