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Warm Lake Resort

4.3

(127 reviews)

Hot Spring
Tested 2026
Free Access
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About This Spring

Warm Lake is largest natural lake in Idaho and its geothermal. Warm Lake Resort is located along the north shore in Boise National Forest in Cascade, Idaho. Warm Lake Resort boasts a geothermal lake with many natural hot springs in the area. Overnight accommodations are available.

Warm Lake Resort is the largest geothermal lake in Idaho. Warm Lake is 640 areas of water. The lake has a temperature of 72 degrees for the top meter in the summer. The lake has various areas where you can see geothermal activity bubbling up. Clothing is not optional. The water is 100 % natural.

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  • Open 6:00 AM – 8:00 PM
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GPS Coordinates
  • 44.65135842971662 N,
  • -115.65816480067521W

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