Shoreline change amount, by town
Data collected since 1880 from shoreline sites generally show most of the loss of shoreline land along Long Island Sound occurring in areas where the geology is sandy – Norwalk to Milford and Guilford to Old Lyme. Barrier beaches tend to register the greatest losses. The huge long-term gain in New Haven and a smaller one in Bridgeport are the result of man-made development – the filling in of waterfront areas to increase land mass.

The short-term change, from 1983 to 2006, shows a far more pervasive loss of land.
Time span
~1880 to 2006
1983 to 2006
= 15 m
Loss and gain by town
Source: Department of Energy & Environmental Protection
Alvin Chang and Jan Ellen Spiegel / CT Mirror