multiple lines of defense from hurricanes
DESCRIPTION
Presentation by Joseph Suhayda, Hurricane Flooding Consultant, State of Louisiana.TRANSCRIPT
Joseph N. SuhaydaMay 31, 2011
South East Louisiana Coast (LANDSAT 1993)
Prepared by NSEL/LWRRI/LSU
Multiple Lines of DefenseMultiple Lines of Defense
Base Flood ElevationBase Flood Elevation
PPSIPPPSIP ConceptualConceptual Restoration PlanRestoration Plan
DRAFT
Plan 4 Bathymetry
1.0
0.5
0.0
-0.5
-1.0
Base Bathymetry
Difference
Difference, m
Increased elevation
Decreased elevation
10.0
5.0
0.0
-2.0
Depth, m
Land
Water
0
-2
10Initial
Final
Final-Initial=-12 (negative: land built)
DRAFT
Track 025
Track 108
Track 126
Track 150Selected Storms(~ 100 yr)
DRAFT
Base Condition Plan 4 Condition
Difference
Maximum Surge Envelope Storm 025
Difference, m
Track 025Track 108
Track 126
Track 150
DRAFT
Wave Height Analysis Flood Insurance Study Wave Height Analysis Flood Insurance Study
WHAFIS Wave Heights
0
1
2
3
4
5
6
7
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500
Distance, ft
Wav
e H
eig
ht,
ft
Open Water
Bay
Marsh
Trees
Cross-Cross-sectionsection
ObliqueObliqueViewView
Plaquemines Parish Coastal Plaquemines Parish Coastal Restoration Restoration
Proposed Wetland Vegetation Proposed Wetland Vegetation PlanPlan
WHAFIS Wave Heights
0
1
2
3
4
5
6
7
8
0 1000 2000 3000 4000 5000 6000 7000
Distance, ft
Wav
e H
eigh
t, ft
Open Water
Plan A
Plaquemines Parish Protection & Restoration ProgramPlaquemines Parish Protection & Restoration ProgramReach B-2Reach B-2
Reach B-2 (Forested Ridge)Approximately : 8 Miles in Length 500 Feet Wide 10 Feet High 8.5 Million Cubic Yards of Fill Cost: $ 50 Million
Multiple Lines of Defense PlanMultiple Lines of Defense Plan