Wildlife At Spinney 
 
Mule deer, pronghorn antelope, and even an occasional elk, red fox or badger may be observed here, while cottontail rabbits, whitetail jackrabbits, coyote and ground squirrels are found in abundance.

Among the many migratory and resident birds that frequent the area are the plains species of horned lark and meadowlark, mountain bluebird, black-billed magpie, common raven, and a variety of raptors, waterfowl and shorebirds which are all attracted to the reservoir’s water supply. Download a bird list that is common to both Eleven Mile and Spinney Mountain State Parks.

Designated a Gold Medal trout fishery, anglers enjoy the cold-water fishing opportunities for cutthroat, rainbow and brown trout, as well as northern pike. White and long-nose suckers are also present in the reservoir’s waters.