FYI Here is an excellent site to ID most any critter and it will tell ya what is in yer area.
Now I am far from a snake person but have been told by those in the know that one rule of thumb is. Red to yellow can kill a fellow, red to black a friend of Jack. This of course is for red yellow and black stripped snakes. My theroy since I don't know, there aint no safe snake so kill em all.
ETA OOOp's silly me I fergot to put the name of the site. It is enature.com