Island Lake (Idaho)
Island Lake is a small alpine lake in Elmore County, Idaho, United States, located in the Sawtooth Mountains in the Sawtooth National Recreation Area. No trails lead to Island Lake although Sawtooth National Forest trails 459, 494, and 458 pass relatively close by. Island Lake is in the Sawtooth Wilderness, and a wilderness permit can be obtained at a registration box at trailheads or wilderness boundaries. The lake gets its name from one small  long island in the southern part of the lake. Snowbank Lake is  upstream of Island Lake while the Hole is  downstream. See also
 List of lakes of the Sawtooth Mountains (Idaho)
 Sawtooth National Forest
 Sawtooth National Recreation Area
 Sawtooth Range (Idaho)

References

Lakes of Idaho
Lakes of Elmore County, Idaho
Glacial lakes of the United States
Glacial lakes of the Sawtooth Wilderness