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Home > Explore! > Coastal Marine Geology > Impacts of Sea Level Rise > Results > Table 3


Table 3. Changes in area and percentage from existing area for low marsh (OW-MHW), high marsh (MHW-HAT), and upland (HAT+) after 1, 2, and 3-ft of sea level rise.

Area Existing Area (m2) 1 ft Area (m2) %Change Existing* 2 ft Area (m2) %Change Existing %Change
1 ft
3 ft Area (m2) %Change Existing %Change
2 ft
Open Water 1043585 1206107 15.6 1390305 33.2 15.3 1607104 54.0 15.6
MHW (Low Marsh) 967394 1949508 101.5 2365355 144.5 21.3 2452054 153.5 3.7
HAT (High Marsh) 1733834 882870 -49.1 615678 -64.5 -30.3 576381 -66.8 -6.4
Upland** 3504731 3211059 -8.4 2878206 -17.9 -10.4 2614005 -25.4 -9.2
* % change from existing areas
** above HAT

OW = open water
MHW = mean high water
HAT = highest annual tide

Last updated on April 21, 2006