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The State of Maine is planning for a 2-ft rise in sea level over the next 100-years for projects within the coastal sand dune system (Chapter 355, Coastal Sand Dune Rules, pdf format-73Kb). This is in response to documented and predicted rises in sea level for the global oceans and the Gulf of Maine, including data collected at the City of Portland tide gauge between 1912 and 2002, which documents an approximate 0.2 m (0.6 ft) rise in sea level, in addition to Intergovernmental Panel on Climate Change (IPCC, 2001) projections of 0.5 m of global average sea level rise by 2100. An estimated 2-ft rise in sea level will have dramatic impacts along Maine's coastlines in terms of sensitive geographic areas including beaches and dunes, wetlands, and nearshore habitats.
The Maine Geological Survey (MGS) also simulated a static 1-ft and 3-ft rise in sea level for the study area, and evaluated potential impacts on marsh habitat and flooding.
Last updated on April 21, 2006
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