Figure A23. This map shows twenty years of shoreline change at Popham Beach State Park from 1991 to 2011 showing the maximum and minimum edge of the dunes. The largest dune area was present in 1991 and represents the most southerly extent of dunes at Center Beach in the last 30 years. From 1991 to 2003 (when the photo was taken) the Morse River removed dunes on the west side of the dune field but the center of the dune field remained stable. From 2003 to 2011 erosion by the Morse River progressed eastward (Figure A21). The smallest area of dunes since 1980 (not shown) occurred in 2011. The 1991 shoreline from an historical vertical photograph about 3 weeks after the Perfect Storm (October 31, 1991), shows an irregular dune edge. The 2011 shoreline was recorded using a hand-held Garmine 12Map GPS. Air photo (6-6-03) courtesy of the Maine Office of GIS. Graphic by S. M. Dickson, MGS.
Higher resolution PDF image of Figure A23.
Last updated on July 14, 2011