How much water do you need for Yosemite?

Each year, park rangers and search and rescue personnel respond to approximately 250 emergency incidents in the park. Here are some quick tips to help you be safe while hiking in Yosemite: Carry a headlamp on every hike, even short day hikes. Carry and drink plenty of water (a minimum of 1 quart every 2 hours)



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Park rangers recommend bringing at least four liters of water per person for this hike. There is no potable water along the Half Dome trail, although you can boil or otherwise filter or chemically purify the Merced River water, which is available up until the Little Yosemite Valley.

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There are water refill stations dotted around the park, so be sure to bring a decent-sized reusable water bottle.

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Our water is perfectly safe to drink, bath and swim in, but we recommend that you bring bottled water for drinking, due to the fact that our water has a high mineral content.

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Merced River water is available up to Little Yosemite Valley, however you should treat this water by boiling, using iodine, or using a giardia-rated water filter. Drinking untreated river water may cause significant illness.

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Picnicking and Hiking Always keep your food within arm's reach and don't turn your back to your food; never leave food unattended. Bears may investigate picnic areas or backpacks for food even in your presence, so be alert.

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Showers are available at the Curry Village pool showerhouse for a fee. Showers are not available elsewhere in the park. Dump stations are available at Upper Pines Campground (all year), near Wawona Campground (summer only), and near Tuolumne Meadows Campground (summer only).

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Water quality throughout Yosemite National Park is considered to be good and is generally above state and federal standards.

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Yosemite National Park offers a range of swimming opportunities—from rivers and lakes to our family-friendly pools, which are the only swimming places in Yosemite with lifeguards. River and lake swimming is at-your-own-risk. Life jackets are strongly recommended—especially for children.

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The National Parks Service describes Half Dome as the most strenuous day hike in Yosemite, and probably the toughest (recommended) day hike in any National Park. So while you can certainly just show up and give the hike a go, you'll enjoy it more if your fitness level is up to snuff.

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Restrooms. Flush toilets are available at the Vernal Fall Footbridge (below Vernal Fall). Composting toilets are available near Emerald Pool (above Vernal Fall), near the top of Nevada Fall, and in Little Yosemite Valley.

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Stay away from river and creek banks during high water conditions and avoid rock hopping. Stream polished rocks along the water's edge may be slippery when wet or dry. If you choose to cross a stream without a bridge, avoid deep and/or swift water.

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16 Big mistakes to avoid in Yosemite National Park
  • 1 - Arriving without a plan! ...
  • 2 - Giving yourself just a day. ...
  • 3 - Thinking the waterfalls are flowing all year round. ...
  • 4 - Heading to Glacier Point for Sunset. ...
  • 5 - Visiting Tunnel View in the middle of the day. ...
  • 6 - Avoiding the epic hikes. ...
  • 7 - Arriving at midday.


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Yosemite is very busy this summer! Any time spring through fall, one- to four-hour delays are possible at entrance stations. It's best to arrive by 8 am or in the afternoon to avoid delays.

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Bears can smell scented particles in the air from miles away. This includes food, trash, human waste, and toiletries like soap and toothpaste. To a hungry bear, it all smells like it might be something to eat. It's always worth the time to take full precautions to keep yourself and wildlife safe.

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You should plan to spend around $130 per day on your vacation in Yosemite National Park, which is the average daily price based on the expenses of other visitors. Past travelers have spent, on average, $40 on meals for one day and $41 on local transportation.

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