The park is home to more than 200 lakes and ponds and several creeks. Several lakes are accessible from park roads with most scattered throughout the park interior. Swimming and wading is allowed in park lakes and creeks, except park hydrothermal areas.
Save Your Skin - Stay out of Hot Water
The hot water in park hydrothermal areas is acidic. Even if it is not hot enough to burn you, prolonged exposure to sulfuric acid can cause damage to your skin and lungs.
Water is Cold at High Elevation
The park ranges from 5,500 to over 10,000 feet elevation. Lakes and creek are cold, even in the summer. Immersion in cold water can cause hypothermia.
There are no lifeguards in the park. Emergency response in remote areas is often limited and/or delayed compared to developed areas.
Leave No Trace - Protect Park Waters and Shorelines
Pack out What you Pack in
Protect the park and respect other visitors by taking everything with you when you leave, including natural food waste.
Know the Risks
Stay with or Store Your Scented Stuff
Do not leave food or scented items unattended while swimming. Help keep wildlife wild by never feeding wild animals.
Choose Durable Surfaces
Stay on hard surfaces such as rocks, gravel, or dry grass whenever possible. Dragging and placing items on less durable surfaces can harm sensitive habitats and the animals that rely on them.
Last updated: March 30, 2021