Trail and Park Falls in Sonoma and Marin

Parks, preserves and trails are close at hand in both counties. Our page on dangerous conditions of public and private property explains the general rules; this guide covers what is different on trails and in parks. Marin County Parks alone lists 39 parks and 34 open space preserves, and Sonoma County Regional Parks manages paved multi-use trails such as the 8.5-mile Joe Rodota Trail between Santa Rosa and Sebastopol.

California's Legislature made a choice about these places: to keep land open to the public, it limited the liability of the people and agencies who own it. Whether you can bring a claim depends on who owns the land, what exactly caused the fall, and what you were doing at the time.

How does a park or trail injury claim work, step by step?

Pin down the exact spot. Note the trail name, the nearest marker or trailhead, and whether you were on a trail, a paved path, a staircase, a parking lot or a picnic area. The rule that applies can change within a few feet.
Find out who owns or runs it. A city, the County, a special district such as the Marin County Open Space District, the State, or a private owner. Each public body is its own entity (Government Code 811.2).
Photograph what caused the fall: a broken step, a washed-out edge, a loose board, a missing railing, and the surrounding ground.
Report it to the park agency. A report creates a record, but it is not a legal claim.
Present a written claim within six months to each public entity that may be responsible (Government Code 911.2), on that entity's own form where it has one.
Wait for the decision, then sue on time. The entity has 45 days to act; after a written rejection, the lawsuit is due within six months (Government Code 912.4 and 945.6).

Which rule applies where?

Where you fell	Main rule	What can still make the owner responsible	Source
A public recreational trail, or an unpaved road to a hiking, camping, fishing or riding area	Public entity not liable for the condition of the trail or road	For a paved trail on an easement that leads to unimproved land, the entity must reasonably try to warn of hazards	Gov. Code 831.4
Natural features on unimproved public land: a creek bank, a cliff, a fallen tree, a beach	Public entity not liable for injury caused by a natural condition	Human changes that make the property "improved" at the spot of the injury	Gov. Code 831.2; CACI 1110
Built features in a developed part of a public park: stairs, parking lots, restrooms, play equipment	Dangerous condition rules: substantial risk, plus notice or an employee's act	The usual elements of Government Code 835, subject to the defenses	Gov. Code 835, 830
A hazardous recreational activity on public land, such as mountain biking off pavement or rock climbing	Public entity not liable to participants	Five listed exceptions, including poorly maintained equipment or structures and gross negligence	Gov. Code 831.7
Private land used for recreation without paying	Owner owes no duty to keep it safe or to warn	Willful or malicious failure to guard or warn, payment for entry, or an express invitation	Civ. Code 846; CACI 1010

What does the trail immunity cover?

Government Code 831.4 protects a public entity, a public employee, and anyone who granted a public easement for these purposes, from liability for injury caused by a condition of three kinds of property: an unpaved road that gives access to fishing, hunting, camping, hiking, riding, water sports or scenic areas (but not a city street or a county, state or federal highway); any trail used for those purposes; and a paved trail, walkway, path or sidewalk on an easement granted to a public entity that leads to unimproved property.

The third category comes with a condition. For a paved path on such an easement, the immunity applies only so long as the entity reasonably attempts to give adequate warnings of any condition that is a hazard to health or safety. The statute says this warning duty applies only to paved pathways and is not a standard of care for unpaved ones.

The statute does not define "trail." Sonoma County Regional Parks describes its Class 1 trails as routes designed for cyclists, equestrians and pedestrians that often serve commuters, and the Joe Rodota Trail as paved and off-road. Whether a given paved route counts as a "trail" under section 831.4, or as ordinary public property judged under the general rules, can be the central fight in a case. Our guide on what makes public property legally dangerous explains those general rules.

What about natural conditions like trees, creeks and cliffs?

Neither a public entity nor a public employee is liable for an injury caused by a natural condition of any unimproved public property, including any lake, stream, bay, river or beach (Government Code 831.2). The Judicial Council's notes to CACI 1110 quote decisions that make this immunity broad:

It applies even when the entity knew of the danger or failed to warn of it, and even where the danger amounted to a hidden trap.
Improving part of a park, with restrooms, fire rings or parking, does not remove the immunity from the parts left unimproved.
In one case it applied to an injury in a paved parking lot, because the trees that caused it stood on unimproved land next to the lot.
Whether a condition is "natural" and whether the property is "unimproved" are two separate questions of fact.

The opposite side of the line is a feature people built or changed. A decision quoted under CACI 1110 says some physical change at the location of the injury, showing the entity is responsible for managing risk there, is needed to take the property outside the immunity.

What if the land is privately owned?

Not every trail is on public land; a path may cross a ranch, a vineyard or land trust property. Under Civil Code 846, an owner of any interest in real property owes no duty to keep it safe for people who enter for a recreational purpose, or to warn them of hazards. The statute's list of recreational purposes includes hiking, riding, camping, picnicking, sightseeing and nature study, and a decision quoted under CACI 1010 says the list is illustrative, so an activity like jogging can also qualify.

Giving permission does not make the land safe or turn the visitor into a guest owed a duty of care (Civil Code 846(c)). The owner remains responsible in three situations (Civil Code 846(d)):

Willful or malicious failure to guard or warn against a dangerous condition, use, structure or activity. A decision quoted under CACI 1010 describes willful misconduct as intentional wrongful conduct done knowing that serious injury will probably result, or with reckless disregard of the results.
Payment for entry. Permission granted for consideration removes the protection; decisions quoted under CACI 1010 describe this as something like an entrance fee and say the exceptions are read narrowly.
An express invitation from the owner, as opposed to mere permission. The California Supreme Court, quoted under CACI 1010, held that an invitation from the owner's authorized agent can qualify, and that the injured person carries the burden on this point.

The owner must first prove the visit was for a recreational purpose (CACI 1010). A fall at a friend's house during a social visit is a different situation, covered in our guide on falls at a friend's or relative's home.

Where does the claim go in Sonoma and Marin County?

For a County of Marin park or preserve, the County lists three separate claim forms: one for the County, one for the Marin County Flood Control and Water Conservation District, and one for the Marin County Open Space District. Claims are delivered by mail or in person to the Clerk of the Board of Supervisors in San Rafael. Marin County Parks also has an online incident report for hazards, maintenance issues and trail or fire road conditions on its parks, pathways and Open Space District preserves. That report helps document the hazard, but it does not replace the claim. Our Marin County injury page lists the other county offices.

For a Sonoma County Regional Parks property, the claim goes on the County's claim form to the Clerk of the Board of Supervisors, by U.S. mail or in person, and the County forwards it to Risk Management. City parks take claims through each city's own office, and a state park claim goes to the Department of General Services. Our guide on how to file an injury claim against a city, county or the State lists each office. The county offices also appear on our Sonoma County injury page.

What changes the answer?

You were doing a hazardous recreational activity. A public entity is not liable to participants in activities that create a substantial risk of injury, and the statute names many: animal riding, mountain biking (not including riding on paved paths or roads), rock climbing, tree climbing, kayaking and others (Government Code 831.7(b)). Liability remains for failing to guard or warn of a known dangerous condition that is not an inherent part of the activity, for a specific fee charged to take part, for failing to properly build or maintain a structure or equipment used in the activity, for reckless promotion, and for gross negligence (Government Code 831.7(c)). A general park admission, parking or vehicle entry fee is not a "specific fee."

A built feature failed. A rotten step, a broken railing, or a collapsed boardwalk is a structure, not a natural condition, and may be judged under Government Code 835 unless the trail immunity reaches it.

You were riding an e-bike or a bike on a paved path. Mountain biking under section 831.7 excludes paved pathways, so a crash on pavement is judged under the other rules. For the e-bike class, age and helmet rules, see our guide to e-bike crashes in Sonoma or Marin.

A child was hurt. The six-month claim still applies to a minor (Code of Civil Procedure 352(b)), though a late-claim application must be granted in some cases involving minors (Government Code 911.6(b)). If the injury happened on park play equipment, read our guide on who is responsible for a playground injury.

A vehicle was involved. A decision of the California Supreme Court quoted under CACI 1010 holds that Civil Code 846 does not shield a landowner or its employee from liability for careless driving on the land.

What could this look like? An example

For example, imagine a family spending a Saturday at a Sonoma County regional park. The father walks down a set of concrete steps from the parking lot to the picnic area, and a step that had been cracked and wobbling for months gives way. Later, his teenage daughter slips on loose dirt where the hiking trail climbs a hillside and sprains her wrist.

The two falls are treated very differently. The daughter's fall was caused by the condition of a hiking trail, which falls within Government Code 831.4, so the County would likely raise trail immunity. The father's fall happened on built steps in a developed area, so his claim would be judged under Government Code 835: was the cracked step a substantial risk, and had the County known about it, or should it have found it through reasonable inspection, in time to repair it or block it off? His claim would go on the County form to the Clerk of the Board within six months. This example is made up to show how the rules fit together; it says nothing about any real case.

What mistakes do people make?

Assuming every park injury is barred, when built features like stairs and railings follow different rules from trails.
Filing only a park incident report and treating it as the legal claim.
Sending a Marin open space claim on the general County form instead of the Open Space District's own form.
Not recording the exact location, so it later becomes unclear whether the fall was on a trail, a path or a structure.
Waiting past six months because a private owner's two-year limit seemed to apply, when the land was public.

What should I do this week?

Mark the location on a map app and save a screenshot with the date.
Photograph the hazard and the area around it, or ask someone to go back while it is unchanged.
Find out who owns the land: the park agency's website, signs at the trailhead, or the county assessor's parcel map.
Get the right claim form and write the six-month date on your calendar. Our guide to California personal injury deadlines shows the other limits.
Keep medical records, receipts and any ranger or incident report numbers in one folder.
Write down the names of anyone with you and anyone who stopped to help.

Frequently asked questions

Does paying for parking at a park change anything?

Not for a hazardous recreational activity on public land: a parking, vehicle entry or general admission fee is not a "specific fee" (Government Code 831.7(c)(1)(B)). On private land, payment for entry can remove the Civil Code 846 protection.

Is a fall on a paved bike path covered by the trail immunity?

It can be. Section 831.4 covers "any trail" used for recreation and separately addresses paved paths on easements that reach unimproved land, so the facts about the path matter.

What if a ranger knew about the hazard?

For a natural condition of unimproved land, knowledge does not remove the immunity, according to decisions quoted under CACI 1110. For a built structure, an employee's knowledge can count as notice under Government Code 835.2.

Can I sue a private ranch owner who let me hike for free?

Only in the situations listed in Civil Code 846(d): a willful or malicious failure to guard or warn, payment for entry, or an express invitation.

Does a warning sign at the trailhead end my claim?

Not automatically. Warnings matter most under section 831.4(c) and for known dangers under section 831.7. See whether you can recover if there was a warning sign.

Is a fall in a city park different from a county preserve?

The same statutes apply to every public entity, but each city, county and district takes its own claims, so the form and the office change.

If you were hurt on a trail or in a park in Sonoma or Marin County, contact Young Law Group today at (707) 343-0556 or through our contact page for a free consultation.

Can I sue after a fall on a trail or in a park in Sonoma or Marin County?