Thamnophis elegans vagrans
The wandering gartersnake, Thamnophis elegans vagrans, is a common species throughout Utah. It can be found in most habitats near water, ranging from low desert to high mountains. They have a more varied diet than most snakes, consuming worms, snails, amphibians, fishes, small rodents. Insects, lizards, other snakes, and small birds.
The below list of places are great places to possibly see the wandering gartersnake.
The below links contain further information.