Figure 4-34e. Channel elevation change, May 1980 to October 1989
The total volume of sediment that accumulated within the channel for the
period from October 1990 to January 2002 was calculated to be 24,600 cu yd.
This figure is considered reasonable in indicating an annual deposition rate
within the inlet of 2,000 cu yd/year. The grids analyzed in this calculation do not
cover the full flood shoal (Figure 4-35), so the actual amount accumulated may
be larger. The survey of January 2002 did not fully capture the flood shoal,
presumably because it was inaccessible. Scour along the east jetty can also be
seen.
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Chapter 4 Morphology Change, and Channel Shoaling and Migration
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