Emerald Lake is a small proglacial lake near the summit of Mount Timpanogos in the middle of the Mount Timpanogos Wilderness in the Wasatch Range in northeastern Utah County, Utah, United States.

[1][3] The now mostly vanished and completely buried Timpanogos Glacier left behind a terminal moraine which now impounds the lake.

The runoff from the rock glacier feeds the lake and colors it blue.

The lake is 6.9 miles (11.1 km) from the trailhead,[5] or about two-thirds of the way up to the summit.

During summer weekends the Timpanogos Emergency Response Team (TERT) of the county sheriff's office stations volunteers at a camp near Emerald Lake to assist with emergency incidents that frequently occur on the mountain.