View of Plaquemines Parish at Empire and River

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View of Plaquemines Parish at Empire and River
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Survey of Route 23
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Control Stations - Louisiana Hurricane Evacuation
Route 23 Survey
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V 195 Reset
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RTK Profiling of Highway
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Fort Jackson
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Levee Observations - Fort Jackson Area
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Levee Observations - Fort Jackson Area
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Levee Observations
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Remote Sensing
LIDAR merged with Color IR Photography
LIDAR DSM
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GPS Baselines - Louisiana Hurricane Evacuation
Route 23 Survey
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VTDP Estimated Subsidence Rates(cm/yr)
-0.8
-0.6
-0.7
-1.4
-1.4
-1.3
-1.4
Units centimeters
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Estimated Amount of Subsidence Since 1984
Leveling
(-14.8)
(-10.6)
(-13.1)
(-26.4)
(-26.0)
(-24.1)
(-26.9)
Units centimeters
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2003 GPS Derived Orthometric Heights (Geoid 99S)
minus Published Orthometric Heights
(-28.6)
(-26.1)
(-24.5)
(-22.6)
(-27.2)
(-32.4)
(-35.8)
(-32.0)
(-31.9)
(-38.3)
(-41.1)
(-42.8)
(-47.1)
Units centimeters
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HEIGHT COMPARISONS1971 and 1984 Leveling2003
GPS-Derived (Geoid 99S), 2003 Predicted Heights
(VTDP) and Published NAVD 88
D 194
R 194
A 152
C 195
EMPIRE AZ MK 2
MILAN 2
C 279
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Evacuation Routes Surveyed to Date