Fern Lake is a small reservoir with grassy banks. It's surrounded by weeds and trees and is a great place to spot wildlife. The lake is just outside the Jack London State Historic Park boundary and offers access to one of the park trails.

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May 24, 2025

Hiking

Fern Lake is a modest reservoir bordered by grassy shores, encircled by trees and wild vegetation. It’s an excellent spot for observing local wildlife. Located just beyond the boundary of Jack London State Historic Park, the lake also connects to one of the park’s trails.

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Best Mountain Biking Routes to Fern Lake

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1. Fern Lake via Carolyn Day, Pine & Bay Trail loop — Sonoma Valley Regional Park

20.0km

02:14

660m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

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2. Warren Richardson Trail – Lake Ilsanjo loop from Montgomery Village

66.3km

05:33

1,210m

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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Hard

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Informations

Elevation 180 m

Weather

Today

Wednesday 28 January

16°C

5°C

0 %

Additional weather tips

Max wind speed: 7.0 km/h

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Location: Sonoma County, California, United States

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Fern Lake

1. Fern Lake via Carolyn Day, Pine & Bay Trail loop — Sonoma Valley Regional Park

2. Warren Richardson Trail – Lake Ilsanjo loop from Montgomery Village

Other Popular Places to Check Out

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