Figure 24. Mainland/South Beach shoreline change along the Chatham
Lighthouse area (Holway Street to Chatham Lighthouse)
dunes and large areas of tidal flats on the inside. The area has expanded over the
1992-1999 time period and now is dry except for overwash at the elbow of South
Beach during the highest storm tide levels. The outer shoreline of the north end of
South Beach has moved landward some 1,300 ft (396 m) as the island, turned spit,
migrates toward the mainland.
Chapter 3 Inlet Throat, Shoreline, and Channel Evolution