Crotalus oreganus lutosus
A venomous pit viper subspecies. The Great Basin rattlesnake is not a large snake, adults range in size from 15" to 36" with the rare individual a few inches larger than three feet. The Great Basin rattlesnake displays many different color variations throughout its range. He was little guy, taking a swim across the river from an island. His little rattle was still growing in.
Sacramento River a venomous pit viper subspecies found in the Great Basin region of the United States. This area stretches from parts of eastern California east into Western Colorado, from south Nevada north into southeastern Oregon.