8AM to Sunset.
Trione-Annadel State Park
COVID-19 Guidelines (June 21, 2021)
Protect yourself, family, friends and your community by following these prevention measures:
- Know Before You Go – Prior to leaving home, check the status of the park unit you want to visit to find out what restrictions and guidelines are in place. Have a back-up plan in case your destination is crowded. Stay home if you are sick
- Plan Ahead – Some restrooms will be temporarily closed to keep up with cleaning schedules. Bring soap/hand sanitizer.
- Play It Safe – Find out what precautions you should take when exploring the outdoors, especially if this is your first time visiting the State Park System. Learn more at parks.ca.gov/SafetyTips.
Be COVID-19 Safe– State Parks continues to follow guidance provided by the California Department of Public Health:
- Fully Vaccinated Persons: Face coverings are not required in public outdoor settings.For indoor public settings, such as museums and visitor centers, all vaccinated individuals are to self-attest that they are in compliance prior to entry.
- Unvaccinated Persons: Face coverings are required in indoor public settings such as museums and visitor centers.
- Leave No Trace – Leave areas better than how you found them by staying on designated trails and packing out all trash. Do not disturb wildlife or plants.
The park, 60 miles north of San Francisco on the eastern edge of Santa Rosa offers miles of trails for hiking, mountain biking, and trail riding.
For wildflower lovers, Trione-Annadel State Park offers a great variety of flowers from early Spring until early Summer, especially on a hike around Lake Ilsanjo. The best months to see the park's wildflowers are April and May, but there are some plants in bloom as early as January and as late as September.
- Dogs are not allowed on trails. Dogs are allowed on a leash under your control only on Channel Drive (a paved road) within the park.
- Model Aircraft (“drones”)/Unmanned Aircraft Systems (UAS)/Glider Use is not allowed in the park per Bay Area District Order No. 660-16-036.
- Electric-Assist or “E-bikes” are considered motorized vehicles and are not allowed in the park.
Fishing Lake Ilsanjo offers excellent fishing for black bass and bluegill. Black bass weighing nine pounds and more have been caught here. A purple plastic worm is a favored bait for the bass, while the bluegill favor garden worms, small crayfish, and grubs. If you are 16 years of age or older, you must have a California fishing license. Ledson Marsh dries up by late August or early September and so no fish are found there.
Location - Directions
The park is east of Santa Rosa and south of Highway 12 on Channel Drive via Montgomery Drive. 6201 Channel Drive Santa Rosa, California, 95409
Latitude/Longitude: 38.4292 / -122.6236
Temperatures during the Summer are in the 80s and 90s. Wintertime highs are in the 50s.
Rainfall averages about 30 inches a year, most of it during the winter and early spring.
Snow is quite rare, and there is little fog.
Facilities and Activities
There is no camping in the park. Fires, campstoves, and barbecues are not allowed.
Note that all plants and wildlife within the park are protected. Collecting or destroying anything in the park, including mushrooms, is prohibited.
Campsites are available at the county campground at Spring Lake and at Sugarloaf Ridge State Park, about ten miles east of Annadel via Highway 12 and Adobe Canyon Road.
Horses and bicycles are allowed only on designated trails. Off-trail riding is not permitted.
Drinking water should be carried on the trails. The water in Hunter Springs is suitable for horses only.
Motor vehicles are allowed only on the entrance road and in the parking lot within the park.
Dogs are allowed only on Channel Drive and in the parking lot. They must be kept on leash at all times and are not allowed on the trails.
Lock your car and take your valuables with you. Don't Litter! If you bring it in, take it back out.