Riding a Wash in California
A wash can look like a natural trail, but in California its appearance does not tell you whether riding there is allowed. The key questions are whether the land manager has opened that route to motor vehicles, whether your machine has the required identification or permit, and whether conditions make the wash unsafe. Here’s how to check before you ride.
A wash is not automatically an open route
A wash is a channel that carries water during rain or runoff. It may also be a tempting place to ride: the surface can be relatively smooth, it may connect trails, and it can look like a route other riders use. None of those things, by themselves, make it legal for OHV use.
On public land, riding access depends on the rules for the specific area and the agency that manages it. A wash may be:
- An approved motorized route
- Part of an area where cross-country riding is permitted
- Closed to motor vehicles
- Open only to certain vehicle types or during certain conditions
- On private, state, tribal, military, or other land with separate rules
The distinction matters. A visible tire track is evidence that someone rode there, not proof that riding is allowed. A route that appears on an online map may also be out of date, unofficial, or from a map layer that does not show current closures.
In many places, the manager designates which routes are open to motor vehicles. Riding beyond those routes can damage vegetation, disturb wildlife, erode banks, or widen a channel into several informal tracks. If you are unsure whether a particular wash is open, don’t treat uncertainty as permission. Check the land manager’s current information or choose a signed, clearly open route.
This is different from simply crossing a wash while following an authorized trail. A designated route may cross a drainage, or a mapped route may run along one. Follow the signed route and any barriers or closure notices. Do not continue up the channel just because it is the easiest way forward. For more on the general boundary between an authorized trail and an unapproved track, see Riding Off a Designated California Trail and Riding a Closed Route in California.
How to check whether a wash is open
Start by identifying who manages the land. A wash can cross a boundary, so a route that is open on one side may become restricted after a short distance. Check the map and signs for the exact section you plan to ride, not just the general riding area.
Bureau of Land Management land
On Bureau of Land Management land, use the current travel information for the particular field office or riding area. Look for the route designation and any area-wide rules. If the wash is within an area open to cross-country motorized travel, that may affect access, but it does not cancel other restrictions, seasonal closures, or vehicle limits.
Don’t rely only on a trail app or a line recorded on a GPS. Third-party maps can help you plan, but the land manager’s current route information and posted signs should guide your decision. If the map leaves the wash’s status unclear, contact the responsible office before riding it.
National forests
For National Forest System land, check the applicable Motor Vehicle Use Map, commonly called an MVUM. It shows which roads and trails are designated for motor vehicle use and may identify vehicle or seasonal restrictions. A wash that is not shown as an open motorized route should not be assumed to be available just because it is drivable.
Maps can be specific about vehicle type, route number, and season. Confirm that the route suits your ATV or UTV and that any dates or conditions allow riding when you plan to go. The overview at California OHV Areas in the National Forests and Motor Vehicle Use Maps and Reading Them can help you understand what to look for.
State recreation areas and other managed land
At a State Vehicular Recreation Area, follow the park’s signs, route markings, closures, and posted riding rules. Don’t treat every drainage as an informal connector between marked trails. Ask staff if a route’s status is unclear.
Private land requires permission from the owner or authorized manager. A public-looking wash is not necessarily public access, and a route may cross private parcels without an obvious fence. Review [California Rules for Crossing Private Land] if your planned ride approaches or crosses private property.
| Where the wash is | What to check | Don’t assume |
|---|---|---|
| BLM land | Current route or area designation, closures, and local restrictions | That tire tracks or an online map line mean it is open |
| National forest | The applicable MVUM, route restrictions, and season | That a drivable wash is an authorized motorized route |
| State recreation area | Park map, signs, barriers, and current notices | That an unsigned drainage is a permitted shortcut |
| Private land | Permission from the owner or authorized manager | That an unfenced channel is open to the public |
Closures can change because of weather, fire, habitat protection, maintenance, or other land-management needs. Check for current notices shortly before leaving, and pay attention to signs on site. A route that was open on a previous visit may not be open today. California Trail Closures to Check First is useful when conditions or access may have changed.
Permits and registration do not make a closed wash legal
A permit or registration deals with whether your machine has the required identification or authorization to operate in a particular setting. It does not give you permission to ride every route in that setting.
California OHV registration, a recognized out-of-state credential, or a nonresident use permit may be required depending on your machine and circumstances. The details are separate from the question of whether a specific wash is open. A valid permit will not override a land manager’s closure, create access across private property, or turn an undesignated route into an authorized one.
If you are visiting from outside California, check the state’s reciprocity rules rather than assuming that your home-state registration is enough. California recognizes qualifying credentials from some states, while riders from other states may need a California nonresident permit. Start with California OHV Permits Explained and California’s Nonresident OHV Use Permit, then confirm the current requirements with the official source before the trip.
A practical way to separate the questions is:
- Is the machine properly identified or permitted? Check the requirements that apply to your vehicle and residency.
- Is this specific route open to motor vehicles? Confirm its designation and any restrictions with the land manager.
- Are there current conditions or closures that affect access? Check official notices and obey signs on site.
You need a satisfactory answer to all three. Carry the required paperwork or other accepted proof, but don’t confuse carrying it with having route access. For background on the broader permit rules, see California OHV Permits Explained. If you are bringing an out-of-state machine, use California OHV Reciprocity: Only Two States to understand why state credentials are not interchangeable in every case.
Plan for changing water and unstable ground
Even an authorized wash route can become dangerous. The main hazard is water moving through a channel, especially in desert country where rain upstream may send a fast flood through an area that is currently dry. Storms may be many miles away, and the sky above your riding location may not show the source of the runoff.
Before riding, check weather conditions for the broader drainage area, not only your campsite or trailhead. If rain is forecast upstream, water is already flowing, or the channel is carrying debris, stay out. Never assume you can outrun rising water in an ATV or UTV. If you see water beginning to move, leave the channel for higher ground if you can do so safely; do not stop in the wash to assess the situation.
A wash can also change surface conditions quickly. Loose sand, gravel, hidden rocks, undercut banks, and debris can make a familiar route difficult. After rain, a wash may have deep ruts, soft edges, or a new drop where there was a gradual crossing before. A channel that looks firm from a distance may conceal soft mud or water.
Use these habits to reduce risk and avoid damaging the route:
- Ride at a pace that lets you respond to changes in the surface and see far enough ahead.
- Keep space between machines so dust does not hide hazards and riders have room to stop.
- Avoid riding along fragile banks or cutting new lines around a blocked section.
- Do not ride through standing water or soft, saturated ground if doing so risks getting stuck or widening the route.
- Turn around when the channel becomes unsafe or its route designation is unclear.
- Avoid stopping, camping, or parking in a drainage where runoff could collect.
A GPS track or saved route can help with navigation, but it cannot tell you whether a wash is currently closed or whether weather has made it unsafe. Keep an offline map available, know how to retrace your route, and tell someone where you intend to ride. In areas with limited cell service, do not depend on a phone connection for navigation or emergency contact.
If an authorized wash route reaches a gate, sign, or closure, stop and follow the restriction. Don’t ride around a barrier or take a parallel track to get past it. If a wash crosses private land or joins a road, confirm that the crossing and any continued travel are allowed. The safest approach is to use signed, mapped routes and treat a wash as a route only when its access is clear.
Disclaimer
This article is for general informational purposes only and does not constitute professional advice. Laws, prices and regulations vary by location and change over time. Consult a qualified professional for guidance on your specific situation.
