Highlight • Lake
Bon Tempe Lake & Dam
Hiking
5.0
(8)
Bon Tempe Lake & Dam is a significant reservoir nestled in Marin County, California, forming a vital part of the Mount Tamalpais watershed. Situated on the northern slope of Mount Tamalpais at an elevation of approximately 189 meters, it is the widest lake in the watershed, with Alpine Lake lying just beneath its dam and Lake Lagunitas immediately to its east. This man-made lake, created in 1948 with the construction of the earthen Bon Tempe Dam, serves as a crucial water supply for the region while offering a tranquil escape into nature.
Visitors consistently praise the expansive earthen Bon Tempe Dam itself, noting its wide gravel trail crossing. From the crest of the dam, hikers are treated to excellent views of Bon Tempe Lake stretching out before them, as well as picturesque vistas down across Alpine Lake at a lower elevation. The serene atmosphere, framed by redwood forests and rolling hills, makes it a popular destination for those seeking peace and natural beauty.
Before setting out, it's helpful to know that the area offers generally well-maintained trails, including a popular 4-mile loop around the lake. This loop is considered family-friendly and dog-friendly, though dogs must remain on leash. Parking is typically available at the Sky Oaks trailhead, often requiring a fee. While the terrain is mostly accessible, some sections can be shaded, and others more open, so dressing in layers is advisable.
Bon Tempe Lake is a year-round destination, with spring bringing vibrant wildflowers like California poppies and sky lupines, making it a particularly scenic time for a visit. The main activities here revolve around hiking and fishing. The Bon Tempe Lake popular trails offer various options, from the easy loop to connections with nearby Lake Lagunitas, extending your adventure. While fishing for rainbow trout and bass is permitted with a California license, it's important to note the advisory regarding elevated mercury levels in fish from the lake.
For a rewarding experience, consider the delightful 4-mile loop trail that encircles Bon Tempe Lake. This accessible route provides continuous scenic views of the water, the surrounding forests, and glimpses of Mount Tamalpais. It's a relatively easy walk, making it suitable for most fitness levels and a perfect option for a family outing.
Beyond the main loop, many visitors enjoy exploring the Shadyside and Sunnyside trails, which offer different perspectives of the lake's natural features. Birdwatchers often spot great blue herons, ospreys, and various ducks, adding to the area's rich biodiversity. The clear water and pristine environment, maintained by strict prohibitions on swimming and boating, contribute to a feeling of being far removed from urban life, often compared to the tranquility of a Sierra Nevada lake.
Whether you're looking for a leisurely stroll or a longer trek connecting to other reservoirs, the area around Bon Tempe Lake & Dam provides numerous options. You can discover a variety of Bon Tempe Dam routes and trails for hiking, trail running, and even designated e-bike paths. To plan your perfect outing and explore the full range of routes, check out the options available on komoot.
Tips
January 6, 2020
Hiking
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Nearby routes
Best routes near Bon Tempe Lake & Dam
5.0
(2)
34
hikers
8.11km
02:20
200m
190m
Embark on the Kent Trail, Stocking Trail, and Rocky Ridge Fire Road Loop, a moderate 5.0 miles (8.1 km) hike that takes about 2 hours and 20 minutes to complete. You will gain 667 feet (203 metres) in elevation, traversing varied terrain from rocky fire roads to shaded forest paths. Enjoy peaceful redwood groves and beautiful views along Alpine Lake as you make your way through this diverse route.
Parking is generally available at the trailhead, though weekends can be busy, so consider an early start. This trail welcomes dogs, but remember to check your pets for ticks afterward. Be vigilant for rattlesnakes, especially in the Kent Trail sections, to ensure a safe and enjoyable outing.
This loop is situated within the Mount Tamalpais Watershed, offering more than just a workout. As you climb, expansive vistas of the surrounding bay and northern Marin open up, providing rewarding views. Keep an eye out for local wildlife, including ospreys and even bald eagles, adding to the natural appeal of the area.
5.0
(1)
10
hikers
14.8km
04:20
400m
390m
Embark on the Bon Tempe Lake and Cataract Falls Loop Trail for a moderate hike spanning 9.2 miles (14.8 km) with an elevation gain of 1309 feet (399 metres). You can expect to complete this route in about 4 hours and 19 minutes. The trail guides you through a diverse landscape, from tranquil redwood groves to dense Douglas fir forests. As you hike, you will encounter the serene waters of Bon Tempe Lake, Alpine Lake, and Lake Lagunitas. A highlight is the impressive series of cascading waterfalls along Cataract Creek, offering a dynamic visual experience. The terrain shifts from gentle paths around the lakes to more challenging, rocky single-track sections with steps and switchbacks near the falls. This loop provides a rewarding journey through varied natural beauty.
Before you head out, be aware that a parking fee is usually required to access the Mount Tamalpais Watershed. The trail's varied terrain, especially the steep and rocky sections near Cataract Falls, means you should wear sturdy hiking shoes for comfort and safety. For the most spectacular views of the waterfalls, plan your visit for late winter or spring, after significant rainfall. Starting your hike earlier in the day is always a good idea to ensure you have ample time to enjoy the scenery and complete the loop before dusk. This will also help you find parking more easily.
This loop is a prime example of the natural beauty found within the Mount Tamalpais Watershed. It stands out for its unique combination of three distinct lakes and the dramatic Cataract Falls, making it a popular choice for those seeking both peaceful waterside strolls and invigorating climbs. The trail's ability to showcase both serene lake views and powerful waterfalls in one continuous journey makes it a notable experience in the region. You will appreciate the well-maintained paths that allow for a deep immersion into this rich ecosystem.
7
hikers
6.43km
01:59
240m
220m
The Bon Tempe Lake Loop offers an easy hiking experience, guiding you through a varied landscape of quiet forest inlets, redwood groves, and open savannas. You will cover 4.0 miles (6.4 km) with an elevation gain of 772 feet (235 metres), which typically takes about 1 hour and 59 minutes to complete. As you hike, you'll enjoy views across Bon Tempe Lake towards Mount Tamalpais, with one side of the trail featuring dense oak and bay woodlands and the other offering more open grasslands.
When planning your visit, be aware that there is a modest parking fee to access the area around Bon Tempe Lake. You can find pit toilets near the parking area below Bon Tempe Dam, and additional restrooms, picnic tables, and drinking water are available at the Lagunitas picnic area. Remember that swimming or drinking from the lake is not allowed, as it serves as a drinking water supply for the region.
This loop is part of the Mount Tamalpais Watershed, an important natural area known for its ecological diversity. The distinct
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Elevation 190 m
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Frequently Asked Questions
What are the most popular trails around Bon Tempe Lake, and what is their difficulty?
The most popular route is the 4-mile loop trail encircling Bon Tempe Lake, which is generally considered easy and suitable for all ages. It offers continuous scenic views and is well-maintained. For those looking to extend their hike, trails like Shadyside and Sunnyside offer different perspectives, and you can connect to nearby Lake Lagunitas or Alpine Lake for varying levels of challenge and longer distances.
What is the elevation gain like on the Bon Tempe Lake loop trail?
The 4-mile loop trail around Bon Tempe Lake is relatively flat with minimal elevation gain, making it an accessible and easy walk for most fitness levels. The lake itself is situated at an elevation of approximately 189 meters.
Is Bon Tempe Lake & Dam suitable for families with young children?
Yes, Bon Tempe Lake is very family-friendly. The easy 4-mile loop trail is suitable for all ages, and many sections are shaded. It's a great place for a leisurely walk with children, offering opportunities for birdwatching and enjoying nature. Restrooms are available, adding to the convenience for families.
Are dogs allowed on the trails around Bon Tempe Lake?
Yes, dogs are welcome on the trails around Bon Tempe Lake, but they must be kept on a leash at all times. This policy helps protect the local wildlife and ensures a pleasant experience for all visitors.
What are the parking options and fees at Bon Tempe Lake?
Parking is typically available at the Sky Oaks trailhead. There is usually a parking fee required, so be prepared with cash or a card for payment. Parking lots can fill up quickly, especially on weekends and during peak seasons, so arriving early is advisable.
Are there any accessible routes for wheelchairs or strollers at Bon Tempe Lake?
While the trails are generally well-maintained, the 4-mile loop around Bon Tempe Lake consists of gravel paths. Some sections are flat and shaded, which may be manageable for sturdy strollers or some wheelchairs, but visitors should be aware that it is not a paved path. For specific accessibility needs, it's recommended to check current trail conditions.
What is the best time of year to visit Bon Tempe Lake for wildflowers or birdwatching?
Spring is an excellent time to visit Bon Tempe Lake, as it brings vibrant wildflowers like California poppies, sky lupines, and Douglas irises. For birdwatching, the area is rich in biodiversity year-round, with sightings of great blue herons, ospreys, great egrets, and various ducks. Early mornings are often best for spotting wildlife.
What kind of wildlife can be spotted at Bon Tempe Lake?
Bon Tempe Lake is a haven for wildlife. Birdwatchers can frequently spot great blue herons, ospreys, great egrets, and various species of ducks. Turtles are also commonly seen in the lake. The surrounding forests are home to other local fauna, making it a rewarding spot for nature observation.
Are there any cafes or accommodation options near Bon Tempe Lake?
Bon Tempe Lake is located within the Mount Tamalpais watershed, which is primarily a natural area. While there are no cafes or accommodations directly at the lake, the nearby cities of Fairfax, Ross, and San Anselmo offer a variety of dining options and places to stay, typically just a short drive away.
What should I pack for a hike around Bon Tempe Lake?
For a hike around Bon Tempe Lake, it's advisable to pack water, snacks, and wear comfortable hiking shoes. Dressing in layers is recommended as some sections of the trail are shaded while others are more open. Sun protection like a hat and sunscreen is also a good idea, especially on sunny days.
Can you fish at Bon Tempe Lake, and are there any advisories?
Yes, fishing is a popular activity at Bon Tempe Lake, with rainbow trout, largemouth, and smallmouth bass found in its waters. A California fishing license is required for individuals 16 and older. However, it's important to note that the California Office of Environmental Health Hazard Assessment has issued a warning regarding eating fish caught from this lake due to elevated mercury levels.