5.0
Mattituck Inlet Navigation Channel Cross-Section
October 1990 through 2002
0.0
-5.0
-10.0
May 1990
Oct 1990
-15.0
1999
2001
2002
-20.0
0
50
100
150
200
250
WEST
EAST
Distance Across Channel, ft
Figure 4-39c. Mattituck Inlet channel cross-section C
Observations during site visits indicate that boat wake action may be a
significant mechanism for the redistribution of sediment within the inlet in the
areas of shoaling. Figures 4-40a and 4-40b show a boat of medium size entering
Mattituck Inlet and the resulting wake arriving obliquely on the area of shoaling
located at the base of the east jetty. The obliquely incident waves can transport
sediment alongshore.
Figure 4-40a. Boat approaching turn at base of jetties, Mattituck Inlet, 9 July
2004, view looking northwest
167
Chapter 4 Morphology Change, and Channel Shoaling and Migration