Isa Lake
Parking available
The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

📜 Pristine lake at the summit of Craig Pass in Wyoming’s Yellowstone National Park, straddling the Continental Divide.
🔍 Unique in draining into both Atlantic and Pacific Oceans, in reverse.

Why Go

🌊 Experience a rare hydrological phenomenon🏞️ Scenic location on the Continental Divide🚗 Easily accessible via Grand Loop Road

Tips

💡 Small roadside sign identifies the lakeℹ️ Informational signage available at pullout📍 Located halfway between Old Faithful and West Thumb geyser basins.

🅿️ ParkingSmall roadside pullout available.

Last updated 28 days ago

We strive for accuracy, but errors may occur. Please verify key info.