Lava Hot Springs World Famous Hot Springs

Please check our calendar for hours

Open Year Round! Bubbling out of natural underground springs, the hot water is laden with minerals, but has no sulfur odor. Over 2.5 million gallons a day flow through the hot springs and are diverted into the Portneuf River keeping the springs ever changing and clean. The spring's temperatures range from approximately 102˚ F to 112˚ F degrees.  Our hot pools have a snow melt system in the deck around them, a cold water deck shower and canopies to block the sun or rain.

YOU CAN PURCHASE PASSES ONLINE OR AT THE DOOR 

Please see our CALENDAR for different hours for the Hot Pools and the Swimming Pools.

Located at 430 East Main Street (4 blocks east of the Swimming Pool) - Google Map

HOURS

<September 2025>
SunMonTueWedThuFriSat
 123456Swimming Pools CLOSED all day
7Swimming Pools CLOSED all day
89101112Indoor Pool: Noon - 8pm from 12:00 pm to 8:00 pm
13Indoor Pool: Noon - 8pm from 12:00 pm to 8:00 pm
14Indoor Pool: Noon - 5pm from 12:00 pm to 5:00 pm
1516171819Indoor Pool: Noon - 8pm from 12:00 pm to 8:00 pm
20Indoor Pool: Noon - 8pm from 12:00 pm to 8:00 pm
21Indoor Pool: Noon - 5pm from 12:00 pm to 5:00 pm
22Swimming Pool CLOSED from 10:00 am to 8:00 pm
23Swimming Pool CLOSED from 10:00 am to 8:00 pm
24Swimming Pool CLOSED from 10:00 am to 8:00 pm
25Swimming Pool CLOSED from 10:00 am to 8:00 pm
26Swimming Pool CLOSED from 10:00 am to 8:00 pm
27Swimming Pool CLOSED from 10:00 am to 8:00 pm
28Swimming Pool CLOSED from 10:00 am to 8:00 pm
29Swimming Pool CLOSED from 10:00 am to 8:00 pm
30Swimming Pool CLOSED from 10:00 am to 8:00 pm
    

Features

  • Open 363 Days A Year!
  • Pure all natural hot spring Mineral Water
  • No chemicals, no sulfur, no odor
  • Natural water temperature 102˚ F to 112˚ F
  • Five outdoor gravel or rock bottom pools
  • Dressing rooms, showers, restrooms and coin operated lockers 
  • Warning - Use of the hot pools by children under two (2) years of age is not recommended. Water above 100 degrees may be harmful to infants. Consult your physician.
  • We are a nonsmoking, non-vaping facility
  • Gift Shop - souvenirs, coffee, drinks, ice cream and snacks 
  • See our Sunken Gardens (free and open to the public) entrance located above the hot springs.

Chemical analysis of the mineral water

  • Alkalinity Carbonate as CO3...0mg/l
  • Alkalinity bicarbonate as HCO3....534 mg/l
  • Alkalinity Total as CaCO3...438mg/l
  • Potassium....52mg/l
  • Sodium....160mg/l
  • Iron.....<0.05 mg/l
  • Manganese....<0.02 mg/l
  • Nitrate and nitrite as N...0.31mg/l
  • Chloride...170mg/l
  • Fluoride....0.65mg/l
  • Sulfate....100mg/l
  • Calcium....98mg/l
  • Hardness as CaCo3...372mg/l
  • Magnesium....31mg/l
  • pH is about 5.2