Boca Raton Inlet

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Boca Raton Inlet Navigation Maintenance and Sand
Bypassing Program
Thomas Campbell PE Coastal Planning and
Engineering, Inc.
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Acknowledgements

• City of Boca Raton
• Florida Department of Environmental Protection
• Erin Hague
• Tom Pierro
• Lindino Benedet
• Charles Finkl

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Nov, 2006 Photo Current Conditions
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1999
1964
1945
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Pre-Construction January 2001
Weir 1980
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Inlet Management Program

• Continuous dredging by City owned Dredge
• Periodic contract dredging of the Ebb shoal
• Annual Monitoring
• Placement of sand on adjacent beaches
• Environmental monitoring and mitigation

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City Owned 10 Dredge
50,000 cy per year bypassed
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Periodic Contract Maintenance

• 250,000 cy per dredging event
• 4 to 11 yr schedule (7 yr average)

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LADS - OCT2000
LADS - OCT2002
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COASTAL PROCESS ZONES
Gravity Flows
Boca Inlet
Back Reef Apron
Forereef
Para(dia)bathic Sediment Depocenter
Nearshore Sediment Flux Zone
Leaky Valve
COASTAL OCEAN
Storm Surge Downwelling Flow
Reef Terrace
Channel Slope
Reef Crest
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LADS - OCT2002
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2002 Nourishment Project

• 343,000 CY
• 5,060 LF
• Between R-223 and R-227

• 2.39 Acres Direct and Indirect
• Impacts
• 2003 Mitigation Reefs Installed

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Biological Monitoring

• 8 Permanent Artificial
• Reef Transects
• 1m2 Stations
• 6-Months Post-Con, 1-Year and 2-Years Post-Con
  Monitoring
• Benthos and Fish
• Community Analysis

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Biological Monitoring

• Biotic and Abiotic Cover
• Biotic Community List
• Digital Video with Differential GPS
• Photomosaics for Comparative
• Analysis

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Fish Community Assessment

• Transect-Count Methodology
• 8 Artificial Reef Transects
• 30 Meters Long

• 60 m3 Tunnel
• Species, Numbers and Size
• Recorded
• Spring/Summer Surveys

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2006 Backpassing
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Conclusions
Nov, 2006 Photo Current Conditions
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Conclusions

• Navigation and beach interests have been
  successfully addressed
• Environmental impacts have been mitigated
• Continuous management and maintenance is required
  to maintain the beach and the inlet