Barrier Evolution | Shoreline Behavior | Beach Monitoring | Bathymetric Change

Methodology | Beach Profiles | CLAMMER | Coastal Profiling System | Sediment Samples | Results

Beach Morphology Monitoring Program
Summary Plot 4

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Figure ES-4. Seasonal variability of the 2.0-m contour line. This figure demonstrates the seasonal variability of shoreline change along the CRLC. The average winter erosion and average summer accretion observed during the first two years of the monitoring program are presented. These large shoreline change rates tend to balance each other to produce the lower net annual shoreline change rates that are also plotted on the figure. Many of the surface map sites experienced significant net change over this two-year period, e.g., 6 m/yr of net progradation at the East Jetty site and 13 m/yr of net recession at the North Head site. Each sub-cell shows maximum net erosion or minimum net accretion at the southern end of the sub-cells (except in the North Beach sub-cell where these extremes occur closer to the middle) and maximum net accretion at the northern sub-cell boundaries. These data suggest that the sub-cell shorelines have realigned themselves in response to the acute southerly wave directions associated with the 1997/1998 El Niņo.

List of beach monitoring summary plots.  Select a summary plot to link to an on-line version or download an Adobe Acrobat version for printing.


Ecology - SEA Program | USGS - Coastal & Marine Geology

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Maintained by CMAP, Washington Department of Ecology
Address questions and comments to George Kaminsky
Modified 22 Mar 2012