Such a yard shall be measured from the mean high-water mark on tidal waters or the
ordinary high-water mark on non-tidal waters whenever the mean high-water mark or
ordinary high-water mark falls within the lot lines. For the purposes of determining
the maximum lot coverage and density for lots with waterfront yards, the mean high-water
mark or ordinary high-water mark shall be substituted for lot lines wherever said
lines fall within the lot lines. Provided, however, on lots with seawalls or revetments
the yard shall be measured from the landward edge of the seawall or revetment.
