Rock Island Lake

Rock Island Lake is a small alpine lake in Elmore County, Idaho, United States, located in the Sawtooth Mountains in the Sawtooth National Recreation Area. The lake is accessed from Sawtooth National Forest trail 459 along Johnson Creek.^[1]

Rock Island Lake
Rock Island Lake Show map of Idaho Rock Island Lake Show map of the United States
Location	Elmore County, Idaho
Coordinates	43°57′27″N 115°07′51″W
Type	Glacial
Primary outflows	Johnson Creek to Middle Fork Boise River
Basin countries	United States
Max. length	0.19 mi (0.31 km)
Max. width	0.17 mi (0.27 km)
Surface elevation	8,555 ft (2,608 m)
Islands	1

Rock Island Lake is in the Sawtooth Wilderness, and a wilderness permit can be obtained at a registration box at trailheads or wilderness boundaries. There is a single rocky island that is less than 200 ft (61 m) long that gives the lake its name.

References

1. Sawtooth National Forest. “Sawtooth National Forest” [map].1:126,720, 1”=2 miles. Twin Falls, Idaho: Sawtooth National Forest, United States Forest Service, 1998.

See also

• List of lakes of the Sawtooth Mountains (Idaho)
• Sawtooth National Forest
• Sawtooth National Recreation Area
• Sawtooth Range (Idaho)