This legislation has been repealed.
(1) A boundary formed by tidal waters, or by a lake, stream or natural feature, must be surveyed so that each change of course or direction of the boundary is determined with appropriate accuracy.
(2) If the actual position of the mean high-water mark of tidal waters, the bank of the lake or stream or the natural feature is substantially different to the adopted position of the boundary, both the actual position and the position adopted under clause 48 or 49 are to be shown on the survey plan.
(3) If:(a) the middle line of a stream is the boundary of land and has not previously been defined by survey, or(b) the middle line of a stream is otherwise required to be determined,both banks of the stream must be surveyed and shown on the survey plan together with the determination of the middle line.
(4) The middle line of a stream need not be marked unless the purpose for which the survey is made so requires.