Chapter 4. Vegetation
117
be further studied and developed into reliable indicators of the ordinary high
water mark.
Finally, examination of multiple vegetation indicators may be the best way to
use vegetative evidence in attempts to delineate the OHWM in the field. That is,
not all types of evidence may exist at all sites, making reliance on a single attrib-
ute problematic. Or vegetation patterns may be somewhat subtle or diffuse,
making clear demarcation of the ordinary high water line difficult. If field inves-
tigators assess the preponderance of the evidence, rather than looking for single
specific indicators, a stronger OHW signal will likely be detected.
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