sustainable sediment management and dredging … · 2019-03-29 · sustainable sediment management...
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DISCOVER | DEVELOP | DELIVER
Regional Sediment Management: Opportunities and ChallengesKatherine BrutschéProgram Manager, National Regional Sediment Management
SUSTAINABLE SEDIMENT MANAGEMENT AND DREDGING SEMINAR6-8 MARCH 2019 SAUSALITO, CA
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UNCLASSIFIED
UNCLASSIFIED
Distribution C: Distribution authorized to U.S. Government Agencies and their contractors; Vulnerability Information; January 2015. Other requests for this document shall be referred to US Army ERDC, ATTN: CEERD-GSV, 3909 Halls Ferry Rd., Vicksburg, MS 39180-6199.
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
…At a cost of more than $1 Billion per year
…..The Corps moves 200 Million cu yds of sediment annually
US Navigation ChannelsO&M & New Work Volumes and Cost
Broward Co Shore Protection ProjectCost of Sand
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Regional Sediment ManagementEstablished 1999, CERB Charge
“A systems approach using best management practices for more efficient and effective use of sediments in coastal, estuarine, and inland environments for healthier and more resilient systems.”
• Recognizes sediment as a valuable resource• Work across business lines, projects, and authorities to create short and long-term economically
viable and environmentally sustainable solutions• Improve operational efficiencies and natural exchange of sediments• Consider regional implications of project scale actions and benefits• Apply/Enhance tools and technologies for regional approaches• Share lessons learned, information, data, tools, and technologies• Communicate and collaborate
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
RSM Goals and Strategies
• Keep sediments in the system• Mimic natural sediment processes• Reduce unwanted sedimentation• Environmental enhancement• Maintain & protect infrastructure
ReduceUpland/CDF
Disposal
BypassBackpassSediments
Ecosystem Habitat
Restoration
Reduce Erosion
SaveCapacity
Stabilize StructuresReduce
ChannelShoaling
ReduceRunoff
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
RSM Process
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Sediment Budgets• Sediment Budget Analysis System (SBAS)• Sediment Impact Analysis Methods (SIAM)
Sediment Budget Portal
Sediment Budget Database
Regional Sediment Budget
Anna Jalowska, UNC-CH
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Models for RSM• Sediment sources and sinks• Regional processes and trends• Multiple interacting projects• Connect beaches & inlets• Connect rivers & reservoirs• Navigation channel maintenance• Evaluate local/regional RSM strategies
water levels, m
-0.400-0.300
-0.200
-0.100
-0.000
0.100
0.200
0.300
0.400
ADCIRC: Storm Surge & Circulation
CMS
ADH: Watershed Analysis
STFATE-LTFATE
HEC-RAS: River Analysis Dredge Material Placement
GenCade: Shoreline Change Sand TransportMorphology Change
Bank Stabilization
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
GenCade• Regional shoreline change, sand transport,
inlet-sand sharing model• Connects multiple beaches & inlets• Multiple sources & sinks• Regional trends• Evaluate regional strategies
GenCade & SBAS Integration
Automate Output to SBASVolume changeTransport ratesDredging and beach fill volumesCells and fluxes
GenCade SBAS
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
SAC, SPNMVD
FRF
Sediment Analysis and GeoApp (SAGA)http://navigation.usace.army.mil/SEM/Analysis
Visualize distribution of detected chemicals
Symbolize sites based on average grain size
Isolate sites based on attributes
Determine volume of material at specified depths
Mapped Sites
• Show distribution of sampling sites• Filter sites based on sediment
characterization testing• View navigation channels or
placements areas
Tools
• Compute Grain Size statistics with data not yet stored in SAGA (Sieve size distribution testing)
Site Details
• Retrieve testing results• View documents• Access stratigraphy
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
CE-Dredge Decision Support ToolIntegrated, Comprehensive Approach for Strategic Dredged Mat’l Mgmt
National ChannelFramework
BUADMM &Ecological Data Synthesis
CSAT
eHydro
Dredging & Placement Optimization
LIDAR &Landscape
Metrics
Placement Areas: Color Coded By Capacity
Channel Shoaling
ChannelSurveys
Benthic Mapping
Placement Areas: Color Coded
By BU
Sediment SamplesOil & GasLeases
Oyster Beds
Beneficial Use Opportunities
Sediment Data & Tools
Navigation Channels
IENC
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Nearshore Berm Research, Guidance, and Tools
Assateague Island, MD
Ft. Myers
Egmont
Pensacola
Vilano
SMTPreliminary tool: educated decisions w/limited dataEstimates Frequency of sediment mobility On/Offshore migration direction Dominant axis of wave direction to estimate
alongshore migration
d50(mm)
Frequency of Mobilization
Predicted Sediment Migration
0.1 16 – 38% 83% Offshore0.2 14 – 30% 60% Onshore0.3 12 – 26% 84% Onshore
http://navigation.usace.army.mil/SEM/SedimentMobility
Berm Database
South PadreIsland
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Thin Layer Placement of Dredged SedimentsOpen Water Placement
Mobile Bay(Interagency Working Group)
Mouth of the Columbia River(Lower Columbia River Solutions Group)
Understand Behavior - Mobilization, Transport, ConsolidationBenthic Habitat - Reduce Impacts & EnhanceShallow Emergent Tidal Marsh Habitat Dredge Hole filling - Recover Hypoxic & Anoxic Zones
ODMDS
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Historical Navigation Sediment Utilization:Where, when, volume of sediments placed beneficially? Where can we improve?
District Data 1998-2017Coastal Navigation Projects• 3 Bcy• 36% placed beneficially• 9 Mcy/yr placed on beaches• 5 Mcy/yr Unknown
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Riverine and Reservoir RSMSedimentation Impacts at the Confluence
of the Sangamon and Illinois RiversFall Creek, Cherry Creek, Spencer Dam
Reservoir Flushing Spencer Dam
• Monitoring and Model Enhancements• Impacts & Benefits Increased
Sediments Below Reservoirs
Innovative Reservoir SedimentBypassing Techniques
Reduce SedimentationBeneficial Use
Shoreline RestorationEnvironmental Restoration
Consequences of Channelization Land Use Impacts
Stakeholder Collaboration
FRM
ENV
NAV
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Mobile District RSM Domain
375-miles of Shoreline21 Federal Projects
8 State Parks 7 Military Installations
Gulf Islands National SeashoreHarrison County Beach Fill
Panama City Beach FillLocal Projects
WRDA86: Place all dredged sediments in ODMDS
- 4.0 Mcy/yr, Hopper Dredge, 20-Miles- Tripled maintenance costs
2014 Decision reversed- ERDC Tools and Technologies - RSM Interagency Work Group
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Regional to Local Opportunities
Sub-Region 9 Sub-Region 7 Sub-Region 5 Sub-Region 3 Sub-Region 1
Sub-Region 8 Sub-Region 6 Sub-Region 4 Sub-Region 2
Mobile BayDauphin Island
Perdido Pass
Pensacola PassEast Pass
Panama City Beaches
Port St JoeMexico Beach
Alligator Point
Apalachicola BayWalton CountyBeaches
Shell Island
Regional Sediment Management Domain
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Understanding the RegionMobile District Sediment Budget
Sediment Budget Analysis System (SBAS)
Sediment Impact Analysis Methods (SIAM)
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Evaluating RSM StrategiesMobile Bay O&M Dredged Material BU Alternatives
• Upper-bay• In-bay placement• Thin layer placement
• Lower Bay• ODMDS
• Various ERDC tools and technologies used to evaluate each alternative
SEDFLUMESediment SamplesAnalysis
SEDZLJSediment Transport
ADCIRCCirculation
Surge
STWAVEWaves
STFATE-LTFATE
GenCade: Shoreline Change Sand TransportMorphology Change
ADH: Watershed AnalysisHEC-RAS: River Analysis
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Regional RSM Strategy and ConstructionMobile Bay RSM Strategy
$12 Million in Annual Value• Fill Brookley Dredge Hole• Gaillard Island
• Marsh creation• Biogradable containment of
sediment• In-bay thin layer placement• Fill mined Oyster Holes• Sand Island Beneficial Use
• No ODMDS Placement• Dredged material from upper
end used to help reduce erosion along the island
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Communicate and CollaborateMobile District Interagency RSM Team
• Alabama Department of Conservation and Natural Resources (ADCNR), State Lands Division
• ADCNR, Marine Resources Division• Alabama Department of
Environmental Management (ADEM)• Alabama State Port Authority• U.S. Fish and Wildlife Service• NOAA, National Marine Fisheries
Service• Alabama/Mississippi Sea Grant• Mobile Bay National Estuarine
Program• Mobile District• ERDC
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Challenge Prevent “wasting” sediment to the DWS Protecting public investment (Jetty) Shoreline erosion Protect benthic habitat
GoalsImplement NWP RSM Strategy Keep sediment in the littoral cell (BU) Obtain/place new nearshore sites Protect South Jetty Root Dune Building: Sand Fencing Lower Maintenance Dredging Costs/Cycle Time Increased Habitat Opportunities for Benthics Stakeholder collaboration $110,000 cost savings/season South Jetty Site Additional Cost Savings/Environmental Benefits TBD
Mouth of the Columbia RiverPOC Jarod Norton
1939
Benson Beach *
* head of jetty in 2002
2002
*
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Seattle District, Ediz Hook Post-dam removal shoreline change analysisPOC: David R. Michalsen, P.E.
22
BLUF: Two dams on the Elwha River were removed in late 2011, sending a large pulse of sediment into the Elwha River Littoral Cell (ERLC). Ediz Hook located at the downdrift end of the ERLC began a beach nourishment program in 1978 to mitigate for loss of sediment supply from the delta and shoreline armoring. Now that sediment from the ER delta has been restored, we are investigating how this large sediment pulse will affect O&M of Ediz Hook over the next 50-year life cycle
Approach to Address Problem• Determine if O&M demands will decrease & if so when will this
occur?• Can sand/gravel vs. cobble be utilized in future nourishment(s) to
increase habitat value?• Develop sediment budget over ERLC• Perform shoreline change modeling to help guide future
management decisions
Problem Statement/Issue• Ediz Hook protects the only deep-draft NAV channel on the Strait of
Juan de Fuca• USCG has a strategic air station on Ediz Hook for S&R• O&M program partners with City of Port Angeles to renourish Ediz
Hook with cobble ~5-10 years. O&M funding and cost-share $$ are not routinely available (deferred maintenance)
• Loss of nearshore habitat due to beach coarsening
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
What is the value of RSM?• More Efficient Project Execution
• Reduced lifecycle costs• More project execution (low use)
• Utilizing Sediment Resources for Healthy Systems• More sustainable and resilient coastal and riverine shorelines,
ecosystem and aquatic habitats
• Build Institutional Knowledge• Improved post-storm recovery• Better data, tools, models available
• Relationship Building• Across USACE• Nationwide engagements across business lines and communities
of practice• Stakeholder/Resource Agency Communication and Participation
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Questions
• What would an RSM Plan look like for your District?• What strategies are you already using? What innovative strategies
could also be included?• What are your roadblocks for beneficial use?• How can we move past these roadblocks to implement RSM?
• RSM Team? Stakeholder workshops/meetings?• Quantification of benefits
• Show no action vs. potential RSM action
US Army Corps of Engineers • Engineer Research and Development Center
Sustainable Sediment Management and Dredging Seminar
6-8 Mar 2019 Sausalito, CAUNCLASSIFIED // FOR OFFICIAL USE ONLY
Regional Sediment Management = Resilient Healthy Systems
Regional Sediment BudgetsLocal Actions=Regional Benefits
Fine Sediment Losses
RSM Collaboration 2000-2016
FSBPA
Thin-Layer Placement
Ecosystem Value
Nearshore Placement
Data Management and Access Guidance, Lessons Learned