The terms shore, bank, and water's edge, applied to navigable, non-tidal bodies of water, are synonymous as lines of demarcation and that the physical evidence to be sought in defining these lines may be described as follows: (a) Edge of the water in its natural condition. (b) Utmost border of dry land. (c) A line dividing the bed from the banks. (d) The water's edge. (e) An over-riding condition throughout that such lines of demarcation must be related to or governed by the water, (i) In its natural condition, (ii) Where its presence and action are common and usual in ordinary years.