🇺🇸 USA · Mammoth Lakes, California
♨ Temperature
80°C
⛰ Altitude
2195 m
⚗ pH
—
💧 TDS
—
🌊 Flow rate
—
📅 Established
—
✓ Verified on 2026-07-24
Hot Creek Geologic Site is a striking geological feature in the Long Valley Caldera where superheated geothermal water at up to 80°C erupts from the floor and banks of Hot Creek, a cold trout stream. The visual contrast of boiling vents and clear cold water, surrounded by volcanic mountains, makes Hot Creek a dramatic natural spectacle. Swimming was historically popular here but has been prohibited since 2006 due to the unpredictable nature of the hydrothermal activity and scalding water temperatures. The site remains fully accessible for viewing.