shoreline erosion and management studies erosion and... · shoreline erosion and management studies...
TRANSCRIPT
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12/6/2001 1
Shoreline Erosion and Management Studies
U.S. Army Corps of EngineersU.S. Army Corps of Engineers
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Shoreline Erosion and Management Studies
National Shoreline Erosion Control National Shoreline Erosion Control Development and Demonstration Program Development and Demonstration Program (“Erosion Control Demo”)(“Erosion Control Demo”)
National Shoreline Management Study National Shoreline Management Study
Regional Sediment Management Study and Regional Sediment Management Study and Demonstration ProgramDemonstration Program
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Shoreline Erosion and Management Studies
Waterways Experiment Station Waterways Experiment Station Coastal and Hydraulics Lab: Coastal and Hydraulics Lab: http://chl.wes.army.milhttp://chl.wes.army.mil
Erosion Control Demo Program “Sec. 227”: Erosion Control Demo Program “Sec. 227”: http://limpet.wes.army.mil/sec227/http://limpet.wes.army.mil/sec227/
Regional Sediment Management Study: Regional Sediment Management Study: http://216.83.232.123/national_demonstrationhttp://216.83.232.123/national_demonstration.htm.htm
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Erosion Control Demo ProgramSection 227 Water Resources
Development Act of 1996(WRDA 1996)
Advancing state of the art in coastal Advancing state of the art in coastal shoreline protection through smallshoreline protection through small--scale demonstration research projects.scale demonstration research projects.
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Section 227 of WRDA 1996“…Establish and conduct a national shoreline erosion control “…Establish and conduct a national shoreline erosion control development and demonstration program for a period of 6 years development and demonstration program for a period of 6 years beginning on the date that funds are made available…”beginning on the date that funds are made available…”
“….constructing prototype engineered and vegetative shoreline “….constructing prototype engineered and vegetative shoreline erosion control devices and methods during the first 3 years…”erosion control devices and methods during the first 3 years…”
“…development and demonstration of innovative technologies…”“…development and demonstration of innovative technologies…”
“…substantial public access…on open coast or on tidal waters.”“…substantial public access…on open coast or on tidal waters.”
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Section 227Background in Section 54 of WRDA 1974Background in Section 54 of WRDA 1974
Shoreline Erosion Control Demonstration Shoreline Erosion Control Demonstration Act of 1974Act of 1974
55--year National Shoreline Erosion Control year National Shoreline Erosion Control Development and Demonstration Development and Demonstration ProgramProgramDemonstration projects that involved low Demonstration projects that involved low cost shoreline erosion control devicescost shoreline erosion control devicesAt least 2 sites on Atlantic, Gulf and At least 2 sites on Atlantic, Gulf and Pacific coasts, Great Lakes, Alaska and Pacific coasts, Great Lakes, Alaska and specific sites named in Act.specific sites named in Act.
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Section 54 Lessons
• No such thing as long-term low cost protection.
•Low cost for one location not transferable to other locations.
•Longer than a 10-year design is difficult.
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Section 227Corps to conduct the Erosion Control Demo Corps to conduct the Erosion Control Demo for 6 yearsfor 6 years
Planning, designing and constructing Planning, designing and constructing prototype engineered and vegetative prototype engineered and vegetative shoreline erosion control devices and shoreline erosion control devices and methods methods –– 3 years3 yearsMonitoring Monitoring –– 3 years3 yearsDetailed engineering and environmental Detailed engineering and environmental reportsreportsTechnology transfer to private property Technology transfer to private property owners, State and local entitiesowners, State and local entities
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Shore Protection MethodsDraw the Line = ArmoringDraw the Line = ArmoringSlow it Down = Breakwaters, Groins…Slow it Down = Breakwaters, Groins…Fill it Up = Beach Fill, Bypassing, WetlandsFill it Up = Beach Fill, Bypassing, Wetlands
Hard Structures = cement, steel, rockHard Structures = cement, steel, rockSoft Alternatives = sand, vegetationSoft Alternatives = sand, vegetationTemporary Structures = Temporary Structures = geotextilegeotextile
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Draw the Line: Concrete Armor Units
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Draw the Line: Geotextile Tubes/Bagsand Concrete Flexible Mats
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Draw the Line: Bioengineering/Structural
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Slow it Down: Groin Optimization
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Fill it Up: Sand Management
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Section 227Minimum Required Sites:Minimum Required Sites:
2 sites on Atlantic coast2 sites on Atlantic coast2 sites on Pacific coast2 sites on Pacific coast2 sites on Great Lakes2 sites on Great Lakes1 site on Gulf of Mexico1 site on Gulf of Mexico
NonNon--Federal interests Federal interests –– cost and responsibility cost and responsibility for operation and maintenance (excluding for operation and maintenance (excluding monitoring)monitoring)Authorization of Appropriations:Authorization of Appropriations:
$21 million$21 million
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Section 227
Program startProgram start--up funding of 1.25 up funding of 1.25 million in FY2000;million in FY2000;Initiation of first site in New Jersey, in Initiation of first site in New Jersey, in March 2000 (FY1999), due to local March 2000 (FY1999), due to local congressional delegation adding specific congressional delegation adding specific funding budget;funding budget;Interagency Coordination Workshop in Interagency Coordination Workshop in May 2000.May 2000.
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DEMONSTRATION SITESSECTION 227
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Section 227Project in Southeast Region
Miami Beach, Florida Miami Beach, Florida Site is considered an “Site is considered an “erosional erosional hot spot” in the Dade hot spot” in the Dade County Beach Erosion & Hurricane Protection Plan;County Beach Erosion & Hurricane Protection Plan;Project Design will provide storm damage reduction and Project Design will provide storm damage reduction and recreation benefit;recreation benefit;Project will document performance of other nonProject will document performance of other non--traditional methods implemented at other “traditional methods implemented at other “erosional erosional hot hot spots” in the Dade County Plan;spots” in the Dade County Plan;Project design is pending outcome of analysis of coastal Project design is pending outcome of analysis of coastal processes at project site.processes at project site.
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Section 227Projects in Northeast Region
Cape May, New Jersey Cape May, New Jersey –– Groin FieldGroin FieldEvaluating cells with differing treatmentsEvaluating cells with differing treatmentsComplete construction in 2001Complete construction in 2001$1.5 million$1.5 million
Gilgo Gilgo Beach, LI Beach, LI –– Dune StabilizationDune StabilizationStabilize with structures in duneStabilize with structures in duneNot under construction; not funded yetNot under construction; not funded yetCould start in 2002Could start in 2002
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Section 227Projects in Northeast Region
Chesapeake Bay Chesapeake Bay –– MonitoringMonitoringVIMS VIMS –– monitoring already constructed monitoring already constructed stabilization devicesstabilization devicesOnOn--goinggoing
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Section 227Other Regions
Alegon Alegon County, Michigan County, Michigan –– Bluff Dewatering Bluff Dewatering above water lineabove water lineTexas Gulf Coast Texas Gulf Coast –– erosion of coastline; erosion of coastline; Geotubes Geotubes as groins/submerged offshore as groins/submerged offshore breakwaters and under dunes to control breakwaters and under dunes to control erosionerosionSouthern Calif. Southern Calif. –– Keep sand in system longer Keep sand in system longer before drift carries sand into deep canyonsbefore drift carries sand into deep canyons
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Section 227Other Regions
Lake Erie, Ohio Lake Erie, Ohio –– Use sand and gravel to Use sand and gravel to prevent bank slides below waterlineprevent bank slides below waterlineSan Francisco Bay San Francisco Bay –– Vegetative techniques for Vegetative techniques for boat wake impactsboat wake impacts
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National Shoreline Management Study
Corps published National Shoreline Corps published National Shoreline Study in 1971Study in 1971
20,500 miles of ocean, estuarine and 20,500 miles of ocean, estuarine and Great Lakes shorelines with significant Great Lakes shorelines with significant erosion;erosion;2,700 miles with critical erosion 2,700 miles with critical erosion problems.problems.
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National Shoreline Management Study
Section 215 (c) of WRDA 1999;Section 215 (c) of WRDA 1999;Preparation of a Report to Congress on the Preparation of a Report to Congress on the state of the shores of the United States, state of the shores of the United States, including:including:
extent and effects of erosion and accretion;extent and effects of erosion and accretion;Causes of erosion and accretion;Causes of erosion and accretion;Description of systematic movement of sand Description of systematic movement of sand along U.S. shores.along U.S. shores.
And…And…
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National Shoreline Management Study
Recommendations on:Recommendations on:Federal and nonFederal and non--Federal involvement inFederal involvement inshore protection;shore protection;
Use of a system approach to sand Use of a system approach to sand management.management.
Study Products will be used for:Study Products will be used for:Policy analysisPolicy analysisLand use planningLand use planningCoastal resource managementCoastal resource management
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National Shoreline Management Study
Study will be used to initiate dialog on Study will be used to initiate dialog on coastal management;coastal management;Develop goals on a regional basis;Develop goals on a regional basis;Address issues including beach Address issues including beach nourishment.nourishment.
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National ShorelineManagement Study
Corps initiated planning in 2000;Corps initiated planning in 2000;So far, no funding provided;So far, no funding provided;Included in President’s budget for 2002 Included in President’s budget for 2002 at $300,000.at $300,000.
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Regional Sediment Management Study
Corps has initiated efforts to assess Corps has initiated efforts to assess benefits of managing sediment resourcesbenefits of managing sediment resourcesat the regional scale rather than at theat the regional scale rather than at thelocal project level;local project level;Concerned with impact of sandConcerned with impact of sandmanagement on down drift projects.management on down drift projects.
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Regional Sediment Management Study
Concept came from 1998 Coastal Engineering Concept came from 1998 Coastal Engineering Board meeting. Board meeting. http://bigfoot.wes.army.mil/cerb.htmlhttp://bigfoot.wes.army.mil/cerb.html
Started in 1999 with Northern Gulf of Mexico Started in 1999 with Northern Gulf of Mexico Regional Sediment Management Program Regional Sediment Management Program Demonstration. Demonstration. http://gis.sam.usace.army.mil/projects/rsmhttp://gis.sam.usace.army.mil/projects/rsm
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Regional Sediment Management Study
Implement Regional Sediment ManagementImplement Regional Sediment ManagementPractices; Practices; Improve Economic Performance by LinkingImprove Economic Performance by LinkingProjects; Projects; Development of New Engineering TechniquesDevelopment of New Engineering Techniquesto Optimize/Conserve Sediment; to Optimize/Conserve Sediment; Determine Bureaucratic Obstacles toDetermine Bureaucratic Obstacles toRegional Sediment Management; and Regional Sediment Management; and Manage in Concert with the Environment. Manage in Concert with the Environment.
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Regional Sediment Management Study
Corps Demonstration Projects
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Northern Gulf of Mexico Regional Sediment Management Demo ProgramCorps of Engineers Mobile District
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Regional Sediment Management Study
Corps of Engineers Mobile DistrictCorps of Engineers Mobile DistrictProject region encompasses 245Project region encompasses 245--miles of coastline miles of coastline from St. Marks River, Florida to Dauphin Island, from St. Marks River, Florida to Dauphin Island, Alabama.Alabama.Products include:Products include:
Regional Sediment Management PlanRegional Sediment Management PlanWorking Regional Sediment BudgetWorking Regional Sediment BudgetCalibrated Regional Prediction SystemCalibrated Regional Prediction SystemRegional Data Management and Geographic Regional Data Management and Geographic Information SystemInformation System
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Jeanette GallihughDivision of Federal Program Activities