A World of Solutions North Topsail Beach Shoreline Protection Project North Topsail Beach Shoreline Protection Project Phase 1 – New River Inlet Channel Realignment & Beach Phase 1 – New River Inlet Channel Realignment & Beach Restoration Restoration NC Water Resources Congress NC Water Resources Congress October 31, 2013 October 31, 2013 Robert Neal Robert Neal Coastal Planning & Engineering, Inc. Coastal Planning & Engineering, Inc. A CB&I Company A CB&I Company
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A World of Solutions North Topsail Beach Shoreline Protection Project Phase 1 – New River Inlet Channel Realignment & Beach Restoration NC Water Resources.
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Phase 1 – New River Inlet Channel Realignment & Beach RestorationPhase 1 – New River Inlet Channel Realignment & Beach Restoration
NC Water Resources CongressNC Water Resources Congress
October 31, 2013October 31, 2013
Robert NealRobert Neal
Coastal Planning & Engineering, Inc.Coastal Planning & Engineering, Inc.
A CB&I CompanyA CB&I Company
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TopicsTopics
1.Location
2.Purpose
3.Problem Identification
4.Design
5.Construction
6.Preliminary Monitoring Results
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LocationLocation
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PurposePurpose
Realign New River Inlet and Place Beach Material Along the Shoreline to Provide Storm Protection and Erosion Mitigation to North End of
North Topsail Beach
– Re-focusing the inlet will cause the creation of the ebb shoal offshore of North Topsail Beach
– Ebb shoal creation will provide a buffer to absorb storm and wave energy
– Ebb shoal creation in conjunction with sand placement will reduce erosion stress along northern tip of the island by closing marginal flood tide channel
– Sand placement will increase beach width and mitigate erosion stress along with providing storm protection for project shoreline beyond the influence of New River Inlet
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Problem IdentificationProblem Identification
North Topsail Beach has been susceptible to damage created by coastal storms and long term erosion trends.
Damage from Hurricane’s Bertha and Fran (1996) estimated at $72 million from several hundred homes, including mobile homes, being destroyed.
Areas fronted by a ‘wide beach and more significant dune system’ received minor damages compared to the majority of North Topsail Beach.
Long-term erosion influenced by the alignment of New River Inlet has also left the shoreline vulnerable to damages.
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Problem Identification – Storm DamageProblem Identification – Storm Damage
Northern Area of North Topsail Beach, Post Hurricane Fran – Sept. 1996. (Photo courtesy of Dr. Bill Cleary, UNCW)
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Problem Identification – Storm DamageProblem Identification – Storm Damage
24th Ave
23rd Ave
Southern Area of North Topsail Beach, Post Hurricane Fran – Sept. 1996. (Photo courtesy of the USACE)
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Problem Identification – Long Term ErosionProblem Identification – Long Term Erosion