258.200.  Limited liability for person owning land adjoining streams or rivers, when. — 1.  Any person owning land adjoining navigable or nonnavigable free-flowing stream or river shall be immune from civil liability for injuries to persons^* or property of persons trespassing or entering on such person's land without implied or expressed permission, invitation, or consent where:

  (1)  The person who was injured entered the land by way of the stream or river; and

  (2)  Such person was subsequently injured on lands adjoining the stream or river.

  2.  The immunity created by this section does not apply if the injuries were caused by:

  (1)  The intentional or unlawful act of the owner or possessor of such land; or

  (2)  The negligent, willful or wanton act of the owner or possessor of such land.