New England District

RI Regional Sediment Management Study North East Shore and Beach Preservation Society 2009 Conference September 21 to 23, 2009 John Winkelman Irene Watts US Army Corps of Engineers New England District Presentation Overview •• ProjectProject backgroundbackground •• TechnicalTechnical approachapproach •• DataData collectioncollection effortsefforts •• ProductProduct •• ConclusionsConclusions •• BuoyBuoy detailsdetails New England District RI RSM Study • Initial appropriation in FY 08 to begin to look at the 24 miles of Washington County coastline. Little direction was provided.

• The decision by the RI CRMC and USACE was to use 2008 the money to develop a Project Management Plan (PMP), stand up the Project Development Team (PDT), and begin collecting existing data/info.

• Los Angeles District, Mobile District, and Galveston District examples of RSM PMPs used.

• FY 09 - Data Collection Formulation New England District

Study Area New England District

Point Judith Pond

Trustom Pond

Pawcatuck River Mouth (Little )

Winnapaug Pond

Matunuck Beach

East Beach Point Judith Charlestown Beach

Misquamicut Beach New England District Study Purpose • To develop a Regional Shore Protection and Environmental Restoration/Protection Plan in the context of a Regional Sediment Management Plan.

• Sediment budget for the overall system and at each inlet within the system so that informed management decisions can be made given existing sediment resources and potential outside sediment sources (such as beach fill).

• Regional Shoreline Management Plan New England District Technical Advisory Group (TAG) • Federal Agencies: – U.S. Department of Agriculture Natural Resources Conservation Service (NRCS) – U.S. Geological Survey (USGS) – National Oceanographic and Atmospheric Administration (NOAA) – Environmental Protection Agency (EPA) – U.S. Fish and Wildlife Service (USFWS) – Federal Emergency Management Agency (FEMA) – Narragansett Tribe • State Agencies: – Department of Environmental Management (RI DEM) – University of Rhode Island (URI) – Rhode Island Coastal Resources Center (RI CRMC) • Non-Governmental Organizations (NGOs): – The Nature Conservancy (TNC) – Save the Bay – Salt Ponds Coalition – Surf Riders Association – Audubon Society – Pawcatuck and Wood River Watershed Association • Local Governments: – City of Westerly – Town of Charlestown – Town of South Kingstown – Town of Narragansett • Commercial, Community, Recreation Interest Groups: – Commercial Fisherman – Aquaculture Fisherman – Recreational Fisherman New England District Coastal Engineering/Geology Study • The development of the proposed management plan will involve:

– Location/quantification of sediment sources, location/quantification of sediment sinks – Quantification and interpretation of past shoreline changes – Sediment mapping – Return period storm analysis – Cross shore beach erosion performance – Coastal flooding – Barrier breaching – Sea level rise impacts – Ecosystem evaluation – Borrow source identification/quantification (Beach Fill Source) – Dredge disposal options and practice – Sediment transport New England District ExistingExisting DataData andand StudiesStudies

• Collection and analysis of all previous data research and reported findings pertaining to the study area.

– aerial and ground photography – beach profile survey data – side scan sonar and bathymetry – LIDAR data – sediment samples – historical shoreline and volumetric changes

• USACE New York District will be consulted due to the large amount work/study done for Long Island.

– Fire Island to Montauk Point (FIMP) study as well as others. New England District CoastalCoastal SurveysSurveys andand MappingMapping • LIDAR (CHARTS) Survey • Beach Profile Surveys and Mapping • Spot Elevation Data and Critical Feature Surveying • Multi-beam/Single Beam Surveys • Side Scan Sonar • Geographical Information Systems (GIS) New England District NumericalNumerical ModelingModeling

•• STWAVESTWAVE •• ADCIRC/FVCOMADCIRC/FVCOM •• CMSCMS FlowFlow andand WaveWave •• ADHADH •• CGWAVECGWAVE •• GENESIS/CASCADEGENESIS/CASCADE •• SBEACHSBEACH New England District FieldField DataData CollectionCollection •• TidalTidal ElevationElevation andand ADCPADCP CurrentCurrent DataData •• WaveWave DataData –– WaveWave BuoyBuoy –– ADCPADCP •• SedimentSediment GrainGrain SizeSize SamplingSampling •• WaterWater QualityQuality GagesGages •• MeteorologicalMeteorological StationsStations New England District New England District New England District Regional Sediment Budget and Management Plan

• Local sediment budgets will be developed at each inlet along the • All information and inlet sediment budgets will be assimilated to determine the entire sediment budget for the South County project area. • The CASCADE/GENESIS/BeachFx numerical model to determine the future shoreline evolution and the associated volumetric deficiencies or accumulations along the coastal zone. • Based on the sediment budget analysis and the future shoreline predictions, erosion prone sub reaches will be identified and the values of the sediment transport rate deficiencies will aid in the formulation of the regional sediment management plan. New England District Conclusions •• RIRI RegionalRegional SedimentSediment StudyStudy isis underwayunderway •• WaveWave buoybuoy hashas beenbeen deployed/recovereddeployed/recovered •• DataData collectioncollection effortsefforts havehave beenbeen designeddesigned andand willwill bebe conductedconducted inin 2010/20112010/2011 •• StudyStudy willwill bebe conductedconducted overover thethe nextnext 33 toto 44 yearsyears New England District InteragencyInteragency PartnershipPartnership •• PurchasePurchase ofof BuoyBuoy –– USACEUSACE NewNew EnglandEngland •• LocationLocation pickedpicked withwith coordinationcoordination ofof TAGTAG •• MaintenanceMaintenance ofof Device:Device: USACEUSACE -- ERDCERDC •• CoastalCoastal DataData InformationInformation ProgramProgram atat ScrippsScripps InstituteInstitute willwill processprocess datadata •• DataData willwill bebe publiclypublicly availableavailable viavia webweb (CDIP(CDIP webweb pagepage andand NOAANOAA –– NDBCNDBC webweb page)page) •• CoordinationCoordination withwith NERACOOS/IOOSNERACOOS/IOOS ProgramsPrograms New England District New England District New England District

Components: – Rubber Cord: 30m – Polypropylene Rope – 3 Kg Mid-Column Float – 500 Kg (1100 lbs) of 3 inch scrap chain New England District BuoyBuoy’’ss FirstFirst UnplannedUnplanned TripTrip •• BuoyBuoy waswas adriftadrift SaturdaySaturday nightnight 99--1919--0909 •• BuoyBuoy waswas recoveredrecovered workingworking withwith thethe RIRI CRMCCRMC usingusing thethe RVRV JackJack ReedReed •• PolypropylenePolypropylene waswas partedparted andand therethere waswas evidenceevidence ofof entanglemententanglement