Henderson Flat KNOW BEFORE YOU GO!


  • Campfires are permitted, but please keep them small and don't leave them unattended. High winds and dry conditions can fuel a wildfire even at unlikely times of the year.
  • Spark arrestors are required on your OHVs year around and on chainsaws, and generators from April 1 to October 31.
  • Later in the summer, there may be restrictions on campfires, smoking, BBQs, and off-road use, so please check at the Prineville Ranger District office or watch for regulations posted at trailheads, staging areas and major access roads.


  • The Henderson Flat area is remote and visitors should be equipped to be self-sufficient. Riders should wear appropriate safety gear, carry a first aid kit and never ride alone. Most Forest Service and Grassland personnel have radios and can give assistance.
  • All trails at Henderson Flat are two-way. Many of the trails are tight and narrow and are maintained in a manner to provide a primitive trail experience. Thus, there are numerous blind turns and hikers, other riders, horses or mountain bikes should be anticipated around every turn. Rocks and logs will be slippery when wet. Riding fast is hazardous and not recommended.

Tips For Forest Trails

  • Ride defensively
  • Keep to the right
  • Watch for other recreationists
  • Single file traveling
  • Don't ride in the dust of others


The soils at Henderson Flat are a mix of clay, sand and decomposed rock. During the dry season, some of the soils become very soft and can be easily displaced and impacted. During the wet season, the clay soils first become slippery and then turn into deep gumbo mud. In this state, they can become heavily impacted and rutted by an irresponsible rider. To help protect the soils, the trails are closed from December 1 through March 31. During the open season, please stay on the designated routes and areas. As always, Tread Lightly!


  • Plant life in the National Grassland is sparse and fragile which makes its role in the ecosystem even more critical. Not only do plants dazzle us with delicate beauty, they also help stabilize the soil, provide needed nutrients, retain moisture, and provide food and shelter for all forms of wildlife. Some of the plants are listed as Sensitive Species and are mandated to be protected. You can help protect these plants and maintain a healthy ecosystem by staying on the designated trails and areas.
  • Noxious weeds are plants that are not natural residents of this ecosystem. Some are poisonous, spread rapidly, and can out-compete native plants for light and water. Seeds from noxious weeds can lodge in tires or tight places on your OHV and other vehicles and can easily be transported from place to place. The spread of these weeds can be reduced by thoroughly washing your equipment before leaving home.


There are many forms of wildlife in Henderson Flat. Please remember that this is their home seven days a week and that you are a visitor. You can avoid being an intruder by keeping your noise down and staying on the designated trails. When you encounter wildlife, slow down, watch and enjoy them, but keep moving. 

For any questions relating to trails, closures, conduct, rules, regulations and/or concerns please contact:

  • OHV Hotline -- 24 hour recorded information, (541) 383-4010
  • OHV Specialist -- Prineville District BLM, 3050 NE Third, Prineville, OR 97754, (541) 416-6700
  • Field Manager -- Prineville District BLM, 3050 NE Third, Prineville, OR 97754, (541) 416-6700