ERDC/CHL CHETN-II-47
March 2004
Table 4 (Concluded)
Project
#
Type
Cause
Remedial Action
Wrightsville Beach, NC
1
Historic inlet location
Underlying geology?
No special treatment
Carolina Beach, NC
1
Pier effects?
Additional sand/seawall
Inlet effects?
Kure Beach, NC
1
Rock outcrop/groin effect
Geologic control
Additional sand
Dare County, NC
1
Kitty Hawk wave focusing? Geologic control?
Proposed fill project
Sand bag revetment
2
Kill Devel Hills wave
Geologic control?
Proposed fill project
focusing?
Local truck fills
Outer Banks, NC
1
Pea Island North - overwash Wave focusing
Placement of inlet channel
over ebb shoal?
material
2
Pea Island - overwash
Wave focusing?
Placement of inlet channel
Underlying geology?
material
3
Rodanthe - Overwash
Wave focusing?
Realign road landward
Shoreline Orientation
Underlying geology?
4
Buxton Breach - Frequent
Wave focusing?
Emergency fills
breach
Underlying geology?
5
Hatteras Island -overwash
Wave focusing?
Rebuild road
Underlying geology?
6
Ocracoke Island -overwash
Wave focusing?
Dune repair
Underlying geology?
Myrtle Beach, SC
1
Offshore sink
Wave focusing?
Fill placement
Underlying geology?
Folly Beach, SC
1
Washout - shoreline
Inlet ebb shoal wave
Rock revetment seawall
orientation
behind fill protects upland
focusing/shoreline changes
orientation
Drift reversal
2
Holiday Inn - encroachment
Sea wall extends
Fill eroded back to seawall
no additional action
seaward/offshore sand
movement
3
Stono Inlet - terminal end
Inlet effects
Shoreline erodes into inlet
shoal system
Tybee Island, GA
1
Shoreline orientation/ nodal
Wave focusing/ nearshore
Overfilling, groins, increase
point in LST
bathymetry
renourishment frequency
Dade County, FL
1
Surfside - nearshore
Wave focusing
Two nearshore submerged
bathymetry/ encroachment
breakwaters
2
Bal Harbor- Inlet Jetty
Block Inlet bypass
Fill placement
rd
3
63 St. - nearshore
Wave focusing
Section 227 breakwater type
hardbottom
structure
nd
4
32 St. - nearshore
Wave focusing
Three breakwaters and
hardbottom/shoreline
backpassing to form
orientation
tombolos
5
Government Cut - terminal
Porous inlet jetty
Sand tighten jetty
end
Panama City, FL
1
R-5
End effects?
2
R-10 to R-12
Wave focusing over borrow
Hollywood Beach
area?
3
R-19 to R-25
Wave focusing over borrow
Sunnyside Beach
area?
4
R-60 to R-65
Wave focusing over borrow
Panama City
area?
5
R-84 to R-91
End losses/Inlet effects?
St Andrews Inlet
Perdido Key, AL
1
Updrift of pass
Relict Inlet/wave focusing?
Fill placement?
Surfside, CA
1
Jetty end effect
Wave focusing?
Fill placement
Seal Beach, CA
1
East Beach updrift of jetty
Wave focusing?
Upland fill placement
Peninsula Beach, CA
1
Updrift of jetty
Wave focusing?
Backpassing truck haul
26
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