1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Coastal and Hydraulics Laboratory (CHL) - (before 9/1981 - present)
  4. Publication
  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/40980
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dc.contributor.authorFall, Kelsey A.-
dc.contributor.authorPerkey, David W.-
dc.contributor.authorTyler, Zachary J.-
dc.contributor.authorWelp, Timothy L.-
dc.date.accessioned2021-06-16T13:23:05Z-
dc.date.available2021-06-16T13:23:05Z-
dc.date.issued2021-06-
dc.identifier.govdocERDC/CHL TR-21-9-
dc.identifier.urihttps://hdl.handle.net/11681/40980-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/40980-
dc.descriptionTechnical Reporten_US
dc.description.abstractThe Seven Mile Island Innovation Laboratory (SMIIL) was launched in 2019 to evaluate beneficial use of dredge material management practices in coastal New Jersey. As part of that effort, the Philadelphia District requested that the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, collect data to characterize the hydrodynamics and turbidity within the central portions of the SMIIL prior to and during dredge material placement. Pre-dredge monitoring found that apart from punctuated wind events, the study area waters were generally calm and clear with small waves, <0.25 m, slow current speeds (~0.1 m/s), low turbidity (~10 ntus), and low suspended sediment concentrations (~10–20 mg/L). In March 2020, 2,475 m³ of dredged sediment was placed on the northern portion of Sturgeon Island within the SMIIL. Turbidity in the waters surrounding the island was monitored to quantify extent of the sediment plume resulting from the placement. Observations found little to no turbidity plume associated with the dredging operations beyond 20 m from the island and that the plume was largely limited to areas near a tidal creek draining the placement area. Additionally, turbidity levels quickly returned to background conditions at times when the dredge was not in operation.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers. Philadelphia District.en_US
dc.description.tableofcontentsAbstract .................................................................................................................................... ii Figures and Tables .................................................................................................................. iv Preface .................................................................................................................................... vii 1 Introduction ...................................................................................................................... 1 1.1 Background ........................................................................................................ 1 1.2 Objective ............................................................................................................ 2 1.3 Approach ............................................................................................................ 2 1.4 Study site............................................................................................................ 3 2 Methods ............................................................................................................................ 5 2.1 Pre-dredged material placement monitoring ................................................... 5 2.1.1 Shark Island Embayment ........................................................................................... 6 2.1.2 Shark Island tidal creek .............................................................................................. 7 2.1.3 Sturgeon Island ........................................................................................................... 7 2.2 Sturgeon Island dredged material placement monitoring .............................. 8 3 Results ............................................................................................................................. 12 3.1 Pre-dredged material placement monitoring ................................................ 12 3.1.1 Resolution of waves with acoustic wave and current profiler (AWAC) ................... 12 3.1.2 Shark Island Embayment ......................................................................................... 12 3.1.3 Shark Island tidal creek ............................................................................................ 18 3.1.4 Sturgeon Island ......................................................................................................... 26 3.2 Dredged material placement monitoring at Sturgeon Island ...................... 29 4 Summary and Recommendations ................................................................................ 36 References ............................................................................................................................. 38 Acronyms and Abbreviations ............................................................................................... 39 Report Documentation Page-
dc.format.extent49 pages / 9.91 MB-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherCoastal and Hydraulics Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CHL TR-21-9-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectDredgingen_US
dc.subjectDredging spoilen_US
dc.subjectHydrodynamicsen_US
dc.subjectSeven Mile Beach Island (N.J.)en_US
dc.subjectSuspended sedimentsen_US
dc.subjectTurbidityen_US
dc.titleField measurement and monitoring of hydrodynamic and suspended sediment within the Seven Mile Island Innovation Laboratory, New Jerseyen_US
dc.typeReporten_US
Appears in Collections:Technical Report

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