Jonathan Hanson said:
Wow, this did get off track, didn't it? So to speak. But small issues reflect larger philosophical conundrums.
So true, so true.
I have faught with my own emotions several times regarding, off-road use, wildlife habitat, preservation, conservation, sustainable management, and on, and on, and on.
As a wildlife biologist by education, environmental consultant by proffession, avid off-road enthusiast (albeit limited to my cruisers

), hunter, backpacker, etc, etc, etc. I have not found the answer.
Chew on this;
Interesting fact (at least in Colorado); approximately 93% of recreators in the State of Colorado do not go further than 300 ft. from their vehicle when in public parks and public lands. Do you? Think about it. I do hunting, hiking, working, etc. But when I am out with the fam, this is pretty much the case for me too.
Most of the high use recreation sites are fairly well damaged, but I know the FS has implemented new policies in the last 10 yrs to greatly reduce such impacts to "levels within acceptable change" by "upgrading" these recreating sites with public restrooms, gravelled parking areas, walkways to provide access to river systems to prevent riparian trespass-they have worked IMO, in a lot of situations. The BLM is trailing, but they always have, and the BLM was implemented not necessarily to manage but to provide "general public use lands" with very little if no restrictions. Comanagement of Forests and BLM lands has helped implement some good managements to the BLM lands as a result (e.g. calving period restrictions, other seasonal restrictions, implementation of signage for trail use, etc.)
Alternatively, I have seen some SERIOUSLY (what I would call seriously) damaged camping sites along the Colorado Trail at 13,000 ft with the nearest road 15 miles away! But management isn't as "active" in these areas, for obvious reasons.
Push to have roadless policies are still underway-while a nationwide push has somewhat faded, the local governments are picking up the ball, there is a meeting tomorrow night about making public lands in my county, and State for that matter, roadless. My opinion is both options are viable-but should be implemented in well defined 30 year management direction and 10 year management implementation plans-and not the piss-ant mangement plans that double as an EIS. Those, IMO, are worthless for making and maintaining managment decisions-A management plan and an EIS are two TOTALLY different animals alltogether-an niether can speak for the others needs.
Such interesting tid-bits can make one think, and piece together the actual "need" for environmental protection/management.
A lot of the initiatives are begun because of buzz-words marketed by interest groups (i.e. old-growth ( Do you know the "actual" definition of and how many forest types actually function as "old-growth?)).
As far as ATVs are concerned, yes I grow continually agrivated by them. But a backpacker alone grows ever more agrivated by my "tread lightly" off road use as well. Recreational conflict will never cease no matter the groups at hand.
And I agree about the "navigable waters" comment. Though an ephemeral wash is afforded somewhat less protections/restrictions for fills, many of them, even if apparently isolated, are given jurasdiction.
To the question about driving in washes, is it okay? Well, from an environmental stewardship stanpoint, no. By the letter of federal law (i.e. CWA), yes it is. Though local regs may restrict such activities.
But driving up a wash DOES do more damage than squashing veg, vertebrates, etc. Though the type of impact is dependant on the substrate at hand. tire depressions can alter flow velocities, scour, thalwags, and so on-its not only what you "see" that matters as an impact-its what you don't even know is occuring.