Colorado is completely landowner biased. Landowner owns the stream bottom. You cannot wade through their land. If you float through, you cannot touch bottom, e.g. bump a rock or anchor. In addition, Colorado does not recognize the the federal definition of a navigable river, so many small rivers cannot be floated. Basically, Colorado defies the federal laws.

Also, Colorado property owners do not have to post No Trespassing signs. It's our responsibility to know when you've crossed the invisible line onto private property. You can be arrested for trespassing, on completely unmarked private property.

Despite these favorable laws, Colorado interests are pushing for more restrictive laws.