Eagle Island State Park 
4000 W. Hatchery Rd.
Eagle, ID 83616
208-939-0696
http://parksandrecreation.idaho.gov/parks/eagle-island
State Park: Bike, Birding, Fish, Hike, Horse, Picnic, Walk, Water Sports
For summer fun this day-use park features grassy picnic areas with tables, a group shelter, equestrian trails and a waterslide. It’s a great getaway near the capital city. Pets and glass containers are not allowed in the park.