8AM to Sunset.
Trione-Annadel State Park
Here are some guidelines for people visiting Trione-Annadel SP:
What is open now?
- Limited parking is now available to the public
- Chemical toilet at W. Richardson parking lot
What is currently closed at this park and throughout the State Park System?
At This Park:
- Visitor Center Restroom
- High public-use indoor facilities, including museums and visitor centers.
- Special events and tours continue to be canceled until further notice
Are there any new visitor guidelines?
Yes, please see below:
- Stay Local: Stay close to home. Walk or bike into the park. Parking is very limited. Do not take road trips to parks and beaches or to neighboring states.
- Stay Active: Keep walking, jogging, hiking and biking. Watch for one-way trails.
- Stay Safer at 6 Feet: Maintain a physical distance of 6 feet or more. Gatherings, picnics and parties are not allowed. Visitors will be asked to leave if there are too many people at the park, beach or on trails to allow for the required physical distance.
- Stay Clean: Be prepared. Bring soap/sanitizer and pack out all trash.
- Stay Covered: The state now requires you to wear a face covering in most indoor settings and public outdoor spaces when you cannot maintain physical distancing of six feet or more from people outside of your immediate household. For details, please visit CDPH’s guidance here. Visitors should also abide by their local county health orders.
Thank you for your patience and continued support of California State Parks as we work to limit your risk for exposure to COVID-19 in the outdoors. For more information, please visit parks.ca.gov/FlattenTheCurve.
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.