Any saw logs, sawn or hewn timber, lumber, boat, building, or other floatable thing of value that may have become derelict in any of the waters or watercourses of the state or in the beds thereof and which have been relinquished, deserted or left by the owner thereof with the intention of abandoning same shall become the property of the owner of the bed of the stream, or the part thereof, where such property may be found and such owner may raise, float or salve said property or authorize the raising, floating or salving of such property.