Is it permitted, or would it be helpful to post where he went to high school? That piece of information is now known throughout the local community, and he went to high school almost within sight of Turtle Creek, but further east. So this waterway would have been very well known to him for years.
People very commonly walk it, fish it, and go canoeing and kayaking on it. The exact location is *rural*, but it's not at all isolated. It would have been an easy hike, an obvious hike of about an hour to visit the local grocery store, if he'd had money at some point. (I can't imagine at all that he was *lost*, but he might have been afraid to be seen in public.)
People very commonly walk it, fish it, and go canoeing and kayaking on it. The exact location is *rural*, but it's not at all isolated. It would have been an easy hike, an obvious hike of about an hour to visit the local grocery store, if he'd had money at some point. (I can't imagine at all that he was *lost*, but he might have been afraid to be seen in public.)