As far as LEO is concerned in the State of California, motorized highbanking must be a certain number of feet from a waterway, and also conform to local rules as well. Correct me if I'm wrong, but I believe it's 150 feet.
This is the State of California law on highbanking.
Codes Display Text
This is the State of California law on highbanking.
Codes Display Text
I think I detected a jab at me, since I'm from Florida...and not part of the "Western Club" so therefore not able to comment on subjects such as this? I am a member of The New 49ers, who hires James Buchal to test all these regs in court...so anything I post here comes through that chain. I spend time mining in northern California, so keep as up-to-date on all the regulations that may impact my efforts.
I don't deny that there isn't confusion about all this, but you can't use that as a defense if you get slapped with a ticket.
Recently, the California Water Board has gotten involved in highbanking, and is enforcing its own rules. I would defer all inquiries to James Buchal so you can get the straight scoop. Also, it appears as if there may be two different sets of rules being referred to in this thread, i.e., those that pertain to BLM land, and those that pertain to State and National Forest Land. All I recommend is know the land status of where you are located, and be sure to check with LEO for local rules.
I'm just trying to be helpful, so don't shoot the messenger!