8:00 AM to Sunset
Hendy Woods State Park
Public Advisory – Hendy Woods Day Use – Navarro River
As of 8/14/23 A Toxic Algae Alert has been issued for the Navarro River access in Hendy Woods State Park Day Use Area.
The following guidelines should be followed:
- Keep an eye on children and pets when near HAB algal mats
- DO NOT let kids play with or handle mat material
- DO NOT let pets drink the water, eat scum, foam or algae, or swim in the water
- Avoid areas were you see mats
- If you think a HAB is present, reduce potential for inhalation of sprays or mists and avoid water or mat ingestion
- DO NOT drink the water or use it for cooking, even if you boil or use a filtration/purification device
- Wash yourself, your family, and your pets with clean water after contact. Ensure dogs do not lick any algal mat material off fur
- If you catch fish, throw away guts and clean fillets with tap or bottled water before cooking
- Avoid eating shellfish if a HAB is present.
Additional information may be found at mywaterquality.com: My Water Quality: California Harmful Algal Blooms (HABs)
No Drones Allowed in Park
- The noise and sight of drones can alter other people’s enjoyment of nature
- A drone hovering nearby can feel intrusive and threatening.
- Drones can capture photographs and video without someone’s permission
- Drones mimic the behavior of predatory birds and can frighten wildlife
For these reasons State Park units in the Sonoma-Mendocino Coat District do not allow launching, landing or the operation of drones on State Park property.
Less than three hours from San Francisco in the heart of the Anderson Valley wine region, Hendy Woods State Park protects two groves of towering redwoods. Some of its trees may be more than 300 feet tall and 1,000 years old. Five miles of trails, including Big Hendy Grove’s wheelchair-accessible Discovery Trail, lead through the fern-filled forest.
To reach the park, drive 8 miles northwest of Boonville on Highway 128. Turn left on Philo-Greenwood Road. In 0.5 miles, turn left at the Hendy Woods State Park sign and proceed 0.2 miles to the ranger station.
THINGS TO DO
Warmer and less foggy than most redwood parks along the coast, Hendy Woods is a popular spot for swimming in the summer and canoeing and kayaking in late winter and early spring. The park is also known for the Hendy Hermit, a Russian immigrant who lived near the park for 18 years.
Open year-round for camping and day use, four cabins and 92 campsites are available year round. The park’s gentle trails lead through a spacious riverside meadow and the skyscraping redwoods of the Big Hendy and Little Hendy groves. The meadow (day-use) area has two shade ramadas, several picnic tables, barbecues, and bathroom facilities—all are wheelchair accessible. In the woods between the two old-growth groves, visitors can camp, stay in cabins, attend programs at the campfire center, or (during certain hours) get souvenirs, supplies, and information at a small, volunteer-staffed visitor center.
If you have an hour, hike the 0.6-mile wheelchair-accessible Discovery Trail through Big Hendy Grove to see the park’s finest old-growth coast redwoods.
If you have half a day, try Big Hendy’s 1.6-mile Upper Loop Trail, which includes the highlights of the Discovery Trail as well as the splendid old-growth trees that lie just beyond. Afterward, head upward (out of the biggest trees) on the Hermit Hut Trail. In 0.6 miles, you’ll reach the turnoff to the downed redwood that sheltered a Russian immigrant for a couple of
decades in the middle of the last century. A bit farther down the trail is another of his improvised dwellings and a fascinating interpretive sign.
If you have a full day, explore Big Hendy, Little Hendy, and the hermit huts; picnic beside the river; and sleep beneath the stars at one of the park’s woodsy, well-maintained campgrounds.
- Dogs must be on a leash no longer than six feet and in a tent or vehicle at night (Please carry proof of rabies inoculation). Except for service animals, dogs are not allowed on trails.
- Build fires only in the camp or picnic stoves provided.
- Do not gather dead wood. It enriches the soil for surrounding vegetation. You may purchase firewood at the ranger station or from the camp host.
- Bicycles are restricted to paved roads.
High and low temperatures between November and March can range from the high 50s to the low 30s at night. From April through October, daytime temperatures range from the low 60s to low 100s, and from the low 40s to the low 50s at night.
Hendy Woods’ accessible features include
- The Azalea Loop: four campsites; restroom accessibility varies.
- The All-Access Trail near the day-use area, about one-half mile long.
- One-room Puma Cabin at Wildcat Campground has a ramp, with accessible restrooms nearby.
- The day-use area, opened in 2015, and its two ramadas with barbecues; bathroom building; drinking fountain and faucet; interpretive signs explaining natural, cultural, and recreational points of interest; concrete paths that connect visitor facilities; ADA-compliant parking.
For additional information, visitors are encouraged to click on the accessible features link at the top right of this page.