Night Snake (Hypsiglena torquata ). Nocturnal; expected in rocky foothills below 6,500 ft (1,980 m).
Common Kingsnake (Lampropeltis getula ). Nocturnal during summer, diurnal during spring and fall; occurs in all habitats below about 7,500 ft (2,290 m).
Coachwhip (Masticophis flagellum ). Diurnal; expected on valley floor; usually absent above 6,000 ft (1,830 m).
Striped Whipsnake (Masticophis taeniatus ). Diurnal; occurs from valley floor well into Pinyon-juniper Woodland in the foothills.
Gopher Snake (Pituophis catenifer ). Both nocturnal and diurnal; occurs in all habitats below about 8,000 ft (2,440 m).
Long-nosed Snake (Rhinocheilus lecontei ). Nocturnal; expected in sandy areas on valley floor up to about 6,000 ft (1,830 m).
Western Patch-nosed Snake (Salvadora hexalepis ). Diurnal; most common in sandy areas on valley floor; not expected above 6,500 ft (1,980 m).
Ground Snake (Sonora semiannulata ). Nocturnal; active in the early evening; expected in rocky areas up to about 6,000 ft (1,830 m).
Western Rattlesnake (Crotalus viridis ). Both nocturnal and diurnal; present on valley floor; expected in foothills.