Table 1. Weir Jetty Costal Inlets in the United States.
Location
Weir Elevation, m,
Length of
Length of
Orientation of
Weir Material
Gross Longshore
Weir1, Degrees
Typically Relative to
Weir, m
Weir Jetty, m
Transport Rate
Mean Low Water
Estimates, cu m/year
Boca Raton, FL
0.0
20
North jetty
90
Concrete bags
Net rate
(N.G.V.D.)
198
91,750 to S
Charleston, SC
-4.0
1,829
4,694 N
70
Rubble mound
--
5,821 S
Colorado River
0.0
305
East jetty
90
Rubble stone
229,400
Mouth, TX
808
East Pass
-0.2
305
West jetty
45
Concrete sheet
149,000
Channel, FL
1,478
pile
Hillsboro Inlet, Fl
Varying
79
North jetty
0
Natural rock
91,750
+0.2+1.1
148
Masonboro, NC
+0.6
335
North jetty
85
Concrete sheet
260,000
1,109
pile
Murrells Inlet,
+0.7
411
North jetty
30
Rubble mound
191,000
SC
1,053
Perdido Pass,
-0.2
305
East jetty
45
Concrete sheet
149,000
AL/FL
548
pile
Ponce DeLeon,
0.0
457
North jetty
60
King piles and adjustable
535,000
FL
1,234
concrete beams
Rudee Inlet, VI
+0.6
138
South jetty
90
Timber
460,000
248
St. Lucie, FL
0.0
274
North jetty
90
Rubble mound
200,000
1,211
1. Angle from general trend of shoreline measured on the channel side.
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