Wetland Restoration in Coastal Louisiana

1
Wetland Restoration in Coastal Louisiana
2
Louisiana Coastal Zone
3
Major Mississippi River Deltas
4
Rate of Wetland Loss

• 1,900 square miles of coastal wetlands have been
  lost in the last 100 years.
• 1,700 square miles have been lost in the last 60
  years.

5
Causes of Coastal Wetland Loss

• Man Induced
• Natural

6
River Levees
7
Large Scale Navigation Structures
8
Navigation Channels
9
Oil Field Access Canals
10
Natural Causes of Wetland Loss

• Hurricanes
• Wave erosion
• Subsidence/Sea level rise

11
Coastal Wetlands Planning, Protection, and
Restoration ActPL - 646

• NRCS
• EPA
• USFWS
• USACE
• NMFS
• Louisiana Governor's Office

12
NRCS Structural Project Types

• Shoreline Protection
• Hydrologic Restoration
• Terraces

13
Gulf Shoreline Protection - Breakwaters
14
Interior Shoreline Protection
Concrete Panels
Vinyl Sheetpile
15
Interior Shoreline Protection Foreshore Dike
16
Hydrologic Restoration
Self Regulating Tide Gates
Canal Plugs
17
Hydrologic Restoration - Automated Screw Gates
18
Hydrologic Restoration Variable Crest,
Flap-gated Culverts
19
Terraces
20
Terraces
21
Terraces
22
Mississippi River Diversion

• Siphons

COE Projects
Marsh Creation
23
(No Transcript)