15 Best Swimming Holes in Northern California (2026 Guide)

Northern California offers some of the most refreshing and scenic swimming holes that provide a perfect escape from the summer heat.  From emerald pools beneath cascading waterfalls to crystal-clear alpine rivers, the region is filled with natural swimming spots that feel worlds away from crowded beaches.

Whether you're looking for a family-friendly swimming area, a hidden oasis after a scenic hike, or an unforgettable road trip stop, these Northern California swimming holes deserve a spot on your summer bucket list.

Safety Tip: Rivers and waterfalls can have strong currents, slippery rocks, and cold water—even during the hottest months. Always check local conditions before swimming and never dive into unfamiliar waters.

This guide highlights some of the best hidden swimming spots in the region, sharing practical tips to help you plan your visit and enjoy a safe, fun summer adventure.

A serene swimming hole in Northern California surrounded by forest and rocks

Top Hidden Swimming Holes to Visit

1. Emerald Pools - South Yuba River

Located near Nevada City, the Emerald Pools along the Yuba River are a favorite for locals who want to escape the crowds. The pools are formed by smooth granite rocks and surrounded by towering pines. The water is clear and cool, perfect for swimming or floating on a sunny afternoon.

• Access: A short hike from the parking area leads to the pools.

• Best time to visit: Late spring to early fall.

• Tips: Wear water shoes to navigate the rocky entry points safely.

  
  

2. McCloud River Swimming Holes - Siskiyou County

The Middle and Lower Falls of the McCloud River feature stunning turquoise pools that are perfect for a refreshing dip. Surrounded by dense forests, these swimming holes are among Northern California's hidden gems.

• Best time to visit: Summer months when the water flow is moderate.

• Tips: Avoid slippery rocks and be cautious of strong currents near the falls.

3. Big Basin Redwoods State Park - Berry Creek Falls Pool

This swimming hole lies beneath Berry Creek Falls in Big Basin Redwoods State Park. The pool is deep and shaded by ancient redwoods, creating a magical atmosphere. The hike to the falls is about 10 miles round trip, so it’s ideal for those who enjoy combining swimming with a day of hiking.

• Access: Moderate to strenuous hike required.

• Best time to visit: Summer and early fall.

• Tips: Bring plenty of water and snacks for the hike, and check trail conditions before you go.

  
  

4. Russian River - Johnson’s Beach Swimming Hole

Johnson’s Beach in Guerneville offers a popular swimming hole along the Russian River. The sandy beach and calm water make it family-friendly and accessible. It’s a great spot for swimming, tubing, and relaxing by the riverbank.

• Access: Public parking and facilities available.

• Best time to visit: Summer weekends.

• Tips: Arrive early on weekends to secure parking and avoid crowds.

  
  

5. The Potholes - El Dorado National Forest

The Potholes are a series of natural, granite carved rocks where water cascades all around. Located in the El Dorado National Forest near Silver Lake, the hike in is approximately 1.5 miles.

• Access: Short hike to access.

• Best time to visit: Mid-summer.

• Tips: The rocks can be slippery in some areas.

6. Burney Falls Pool - McArthur-Burney Falls Memorial State Park

One of California's most iconic waterfalls, Burney Falls plunges 129 feet into a cool pool below. Swimming directly beneath the falls is prohibited to protect both visitors and the fragile environment, but nearby areas of Burney Creek offer places to cool your feet and enjoy the scenery.

• Best time to visit: Summer.

• Tips: Scenic hiking trails and picnic areas.

7. Lake Alpine - Alpine County

If alpine lakes are more your style, Lake Alpine offers pristine swimming surrounded by towering pines and mountain peaks. The calm shoreline makes it ideal for families with young children.

• Best time to visit: Summer.

• Tips: If you're looking for a classic lakeside lodging or camping, visit Lake Alpine Lodge.

8. Cosumnes River Gorge - El Dorado County

Just east of Sacramento, sections of the Cosumnes River offer shallow pools, smooth granite rocks, and peaceful swimming areas. Spring runoff can create dangerous currents, so late summer is often the best time to visit.

• Best time to visit: Summer.

• Tips: 

9. American River - Auburn State Recreation Area

The American River is a summer favorite for Sacramento locals. While rafting is popular, several calmer sections near Auburn provide excellent places for swimming and relaxing along sandy beaches.

• Access: Popular access points include China Bar, Mammoth Bar and Oregon Bar.

10. Salmon Creek Falls - Sierra County

A lesser-known destination, Salmon Creek Falls, rewards visitors with clear pools beneath cascading waterfalls. The surrounding forest creates a peaceful atmosphere that's perfect for escaping the summer crowds.

• Best time to visit: Summer.

11. Big Springs - Shasta County

Fed by underground springs, Big Springs stays refreshingly cool even during July heat waves. The clear water and shaded surroundings make it an ideal picnic destination.

• Best time to visit: Summer.

• Tips: Popular area for bird watching and hiking.

12. Van Damme State Park's Pygmy Forest Area (Nearby Coastal Creeks)

While the ocean may be too cold for swimming, nearby freshwater creeks and pools at Van Damme State Park offer a refreshing alternative after exploring Mendocino's scenic coastline.

• Best time to visit: Summer.

13. Stony Creek - Glenn County

Located near Black Butte Lake, Stony Creek features calm swimming areas and plenty of room for kayaking, paddleboarding, and fishing.

• Access: Located about miles west of Orland.

• Best time to visit: Summer.

• Tips: Before heading out check current lake levels and water safety conditions because reservoir levels change frequently.

14. Trinity River - Trinity County

The Trinity River is known for its crystal-clear water and countless swimming access points. Several beaches along the river provide easy entry and beautiful mountain views.

• Access: Big Creek Fish Ladder, East Fork Bridge, Forest Glen, Little Rock and Lovers Leap.

• Best time to visit: Summer.

15. Slide Creek Pools - Plumas National Forest

These naturally carved granite pools remain one of Northern California's best-kept secrets. Visitors willing to hike are rewarded with clear water and peaceful surroundings.

• Best time to visit: Summer.

  
  

Tips for visiting northern California swimming holes

Before heading out, keep these tips in mind:

• Visit early to beat the crowds.

• Wear water shoes for slippery rocks.

• Bring plenty of drinking water and sunscreen.

• Pack out all trash.

• Avoid swimming after heavy rains when currents are strongest.

• Never jump from cliffs without knowing the water depth.

• Check for wildfire closures before traveling.

Best Time to Visit

The ideal swimming season runs from late June through early September, when water levels are generally lower and temperatures are warmest. Snowmelt can make rivers dangerously cold and fast-moving in early summer, so always check local conditions before entering the water.

Frequently Asked Questions

What is the clearest swimming hole in Northern California?

The South Yuba River's Emerald Pools, the McCloud River, and Whiskeytown National Recreation Area are known for exceptionally clear water.

Are Northern California swimming holes safe?

Many are safe when conditions are calm, but river currents, cold water, submerged rocks, and changing water levels can create hazards. Always follow posted warnings and check local conditions before swimming.

Which swimming holes are best for families?

Lake Siskiyou, Lake Alpine, Whiskeytown's Brandy Creek Beach, and calmer sections of the American River are popular family-friendly options with easier access and gentler water.