Table 1. Elevations utilized to classify low marsh (open water - mean high water) and high marsh (mean high water - highest annual tide) in response to sea level rise.

Area	Elevation (m, NAVD)
	Exist. Cond.	1-ft SL	2-ft SL	3-ft SL
Open Water	0.000	0.305	0.610	0.915
Mean High Water	1.200	1.505	1.810	2.114
Highest Annual Tide	1.790	2.095	2.400	2.704

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Last updated on April 21, 2006

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