The climate of the area is arid, with hot summers and cold winters. Summer temperatures range from 85 F at midday to 45 F at night. Rainfall is variable and thunderstorms are common. Although open year-round, visitors should be aware of colder winter temperatures and snow. Eagle Valley Reservoir is the primary attraction at Spring Valley State Park.
Rainbow trout is the primary species.
A boat launch is located on the south shore of the reservoir adjacent to the Day Use Picnic Area. A ramp, dock and temporary docking slips are available. A developed trail connects the Stone Cabin and Ranch Campground. Walks around the reservoir are popular and allow terrific views of the valley. Water is also available.