rad, thanks guys! i found that photo on some bmx blog when i searched google for 'arizona ditch' and just looked through pictures. in all the photos and video of the ditch i saw before that one, the ditch looked clean. but in that photo it and some others i found it looked pretty dirty, and in one website it said there's a sewage ditch right there, or it's part of it or something. anyway, gonna check it out, thanks!