ObROFF:

Some western US states have liberal stream-access laws -- Montana and
Idaho in particular, in my experience. If you stay below the high-water
mark you're legal. Some landowners on trout streams don't like this. Tough.

In other western US states, like Colorado (the only one I'm sure of),
trespassing and stream-access laws are far more in the landowners'
interest. The landowner doesn't have to post and he owns the stream, as
I understand it. You can get arrested, fined, lose your hunting and
fishing rights in neighboring states, and even go to prison for
misreading a map.

As a fisherman and hunter, I far prefer laws that require posting, and I
far prefer liberal stream access. Duh!

--
Cut "to the chase" for my email address.