A pity that its eye slipped out of focus, but it still is an impressive photo in so far as you went down to its level somewhat and it lifts its head to look up. Is this a dangerous or a harmless one, would you know?
I was going to say it looks like a corn or rat snake...which would be completely harmless...but it's better to assume it's dangerous...especially if there are cottonmouths in that area.
I like the shot David and have posted a few snakes in the past. It's not easy to keep a moving snake in focus especially if you have a wide apeture. As well we have no poisonous snakes in our area, that said welcome to the forum. Look forward to more posts.