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Bon Tempe Lake & Dam

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Bon Tempe Lake & Dam

Hiking

5.0

(7)

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…

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    January 6, 2020

    Hiking

    Wide earthen dam with a great gravel trail crossing. From the top of this dam excellent views of the Bon Tempe Lake, and down across Alpine Lake at a lower elevation.
    Wide earthen dam with a great gravel trail crossing. From the top of this dam excellent views of the Bon Tempe Lake, and down across Alpine Lake at a lower elevation.

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    Best routes to Bon Tempe Lake & Dam

    5.0

    (10)

    100

    hikers

    1. Bon Tempe and Lagunitas Lakes Loop

    9.13km

    02:27

    110m

    100m

    Hike the moderate 5.7-mile Bon Tempe and Lagunitas Lakes Loop in Marin County, enjoying lake views and diverse woodland scenery.

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    Moderate

    5.0

    (8)

    96

    hikers

    Hike an easy 4.3-mile loop around Bon Tempe Lake and Lake Lagunitas in the Mt. Tamalpais Watershed, enjoying lake views and redwood groves.
    Easy

    5.0

    (4)

    19

    hikers

    Hike the moderate 6.2-mile Bon Tempe Lake to Alpine Lake loop in Mount Tamalpais Watershed, featuring lake views and diverse forests.
    Moderate

    Details

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    Elevation 190 m

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    Location: Marin County, California, United States

    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.

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