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Lake Coeur d'Alene in Idaho

Idaho · Kootenai County

Lake Coeur d'Alene

Coeur d'Alene · Harrison · Worley

Loading live conditions for Lake Coeur d'Alene…

Surface area31,494acres
Max depth215feet
CountyKootenai
Data sourceEWMA modelAir-temp trend
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"The crown jewel of the Idaho Panhandle — surrounded by forested mountains, with the downtown waterfront of Coeur d'Alene anchoring the north end. Deep, clear, cold even in summer. National Geographic has named it one of America's most beautiful lakes multiple times."

Seasonal pattern

When does Lake Coeur d'Alene warm up?

Lake Coeur d'Alene is deep (max depth 215ft) and carries significant thermal inertia, so it warms slowly — surface temperatures typically don't reach comfortable swimming range until late June or early July. Spring-fed or alpine lakes stay cooler all summer. The live forecast above shows current conditions.

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Field notes

About Lake Coeur d'Alene

  • One of the deepest lakes in the Pacific Northwest
  • Coeur d'Alene resort + floating-green golf course anchors downtown
  • Cold even in midsummer — surface rarely above 70°F
  • Old mining tailings in the south arm — water-quality watch
Surface area
31,494 acres
Max depth
215 ft
County
Kootenai
Water data
Modeled estimate from air-temp trends
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