adjacent sediment slurry enrichment proposals for Jamaica Bay. Also known as Thin Layer Placement this process as many opportunities for Jamaica Bay Wetland restoration

1. Adjacent
Sediment Slurry
Wetlands
Enrichment
Opportunities in
Jamaica Bay

2. History
• 1997-2000 Marsh loss recognition by Ecowatcher’s
• April 2001 Ecowatcher’s scientific panel and tour of
the bay
• May 2001 NPS Blue Ribbon Panel
• Recognition of Wetlands Loss Problem
• 2002 Ecowatchers contact Florida Power and Light –
secure funding commitment for Pilot wetlands Project
–outreach to Jet Spray Barge operator
• 2003 Barge transported from Louisiana to Jamaica Bay
• 2003 Big Egg Marsh Restoration Project

3. NPS Big Egg Marsh Wetland Restoration Project
• Goals
• Elevate portion of Big Egg Marsh experiencing marsh die off
• Place 8000 CU on depressed pooling areas
• Raise elevation 6-18 inches
• Hydro seed
• Spartina Plug Planting
• Create two acres of restored wetlands

4. Jet Spray Barge
operating at Big
Egg

5. Big Egg Marsh

7. Benefits
• Small project areas 2- 3 acres
• Low Cost
• Stop total marsh loss in areas
where the center marsh area is
disappearing
• Maintenance type of approach
to stay ahead of SLR
• Create sediment bank that can
“feed” adjacent areas

8. Adjacent
Sediment Slurry
Enrichment
• Barge Platform
• Dredge Adjacent Sediment
• 130 foot spray range
• Barge moved during process
• Initiated in Louisiana
• Recently Referred to as “Thin
Layer Placement”
• Spring Creek and Idlewild
upcoming projects to utilize

9. ACOE Thin Layer Placement THP

18. Black Bank Marsh

20. Big Egg East

22. Summary
• NOT a replacement for Marsh Island Building
• A maintenance program to stay ahead of
complete wetland island collapse
• Application opportunities in the interior of
the bay as well as along the shorelines
• Wide-spread acceptance and support across
various agencies and multiple states
• Additional Opportunity to save the wetlands
of Jamaica Bay.

23. • Questions ?