| Depth-Utilization Analysis for Estimating Economic Activity Supported by Dredging |
Sep-2009 |
10 pages |
| Authors:
Kenneth W Mitchell; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
 | The U.S. Army Corps of Engineers (USACE) has the federal mission of maintaining the national waterborne transportation infrastructure. In support of this mission, the USACE invests hundreds of millions of dollars annually towards operation and maintenance, primarily dredging, of federal channels and waterways. Limited funding in recent years has forced project managers to make difficult decisions concerning which projects and sub-projects are to be dredged and which are to be ... |
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| Coastal Inlets Research Program. Barrier Island Migration Over a Consolidating Substrate |
Sep-2009 |
219 pages |
| Authors:
Julie D Rosati; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Barrier islands that overlie a compressible substrate load consolidate the underlying subsurface. Through time, the elevation and aerial extent are reduced, making them susceptible to inundation and overwash. Sand washed over the island and onto back-barrier marsh or into the bay or estuary begins the consolidation process on a previously non-loaded substrate. The result is an increase in the overwash, migration, breaching, and segmentation. This research determined the degree to ... |
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| Coastal Inlets Research Program. Shark River Inlet, New Jersey, Entrance Shoaling: Report 1, Desk Study |
Sep-2009 |
33 pages |
| Authors:
Nicholas C Kraus; Mary C Allison; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report documents a desk study performed to identify factors responsible for accelerated sand shoaling at the federally maintained entrance channel to Shark River Inlet, NJ. Since the late 1990s, channel maintenance dredging requirements at the inlet have increased. The study was proceeded by review of the engineering literature, analysis of channel and nearshore bathymetry surveys, and application of general principles of coastal and inlet processes. Although Shark River Inlet ... |
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| Regional Morphology Analysis Package (RMAP), Version 3: User's Guide and Tutorial |
Sep-2009 |
25 pages |
| Authors:
Andrew Morang; Magnus Larson; Nicholas C Kraus; Brian K Batten; Kenneth J Connell; Wayne Tanner; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note (CHETN) serves as a user's guide for the Regional Morphology Analysis Package (RMAP) Version 3, a modernized version of the Beach Morphology and Analysis Package (BMAP). A revised interface facilitates assembly, quality control, manipulation, analysis, visualization, and archiving of geospatial shoreline positions, beach profiles, and channel cross-sections. The interface, options, data import and export, and data analysis routines are described within this CHETN. ... |
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| Port Isabel (GIWW) Channel Improvements at the Queen Isabella Causeway. Laguna Madre, Texas, Navigation Improvement Project |
Sep-2009 |
70 pages |
| Authors:
Timothy W Shelton; Dennis Webb; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Laguna Madre is located on the southern shore of the state of Texas. The Gulf Intracoastal Waterway (GIWW) passes under the Queen Isabella Causeway between Port Isabel and South Padre Island. In 2001, a tow struck the Queen Isabella Causeway collapsing a span of the bridge and resulting in the death of eight motorists. In response to that event, the U.S. Army Engineer District, Galveston, (SWG) was tasked with making ... |
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| Dover Dam Physical Model Study, Tuscarawas River, Dover OH |
Sep-2009 |
68 pages |
| Authors:
Elizabeth C Burg; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Dover Dam is located on the Tuscarawas and Muskingum Rivers near Dover, OH. Based on data collected since the dam's original construction, it is possible that the dam will be overtopped by the Probable Maximum Flood. Several design alternatives are being considered to address this issue. A physical model study was conducted at the U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory to collect data for use ... |
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| Numerical Model Study of the Tuscarawas River below Dover Dam, Ohio |
Sep-2009 |
58 pages |
| Authors:
Richard L Stockstill; Jane M Vaughan; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The U.S. Army Corps of Engineers, Huntington District (LRH) has been charged with upgrading Dover Dam to meet hydrologic design standards and address stability issues. The LRH requested that the U. S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory (CHL), evaluate the flow conditions in the Tuscarawas River downstream of Dover Dam as part of a safety assurance program. The two-dimensional depth-averaged module of the Adaptive Hydraulics ... |
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| J. T. Myers Landside Lock Outlet Diffuser Study, Ohio River |
Sep-2009 |
41 pages |
| Authors:
Hite; John E Jr; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Navigation improvements are planned at J. T. Myers Locks and Dam on the Ohio River main stem. The existing project consists of a navigation dam, a 1,200-ft-long by 110-ft-wide main lock chamber adjacent to a 600-ft-long by 110-ft-wide auxiliary lock chamber. One of the improvements includes developing a 1,200-ft long lock chamber from the existing 600-ft-long lock chamber. The outlet design originally proposed for the filling and emptying system in ... |
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| Ankudinov Ship Squat Predictions - Part 2: Laboratory and Field Comparisons and Validations |
Aug-2009 |
21 pages |
| Authors:
Michael J Briggs; Larry Daggett; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note (CHETN) is a continuation of the earlier CHETN entitled, Ankudinov ship squat predictions - Part I: Theory and FORTRAN programs, CHETN-IX-19 (Briggs 2009) that documented the Ankudinov squat formulas and described two FORTRAN programs for single and multiple ship speed applications. It also compared the Ankudinov formula with several of the PIANC empirical squat formulas for a Panamax bulk carrier and tanker. This ... |
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| Calculating Forces on Components of Hydraulic Structures |
Aug-2009 |
12 pages |
| Authors:
Moira T Fong; Richard L Stockstill; E A Hammack; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note (CHETN) demonstrates a means of calculating hydraulic forces acting on submerged surfaces of hydraulic structures. The primary concern in evaluating the hydraulic performance of a structure is whether it can withstand the imposed hydraulic forces. Forces acting on components such as stilling basins, spillway faces, bridge piers, culvert valves, spillway gates, lock guard walls, floodwalls, etc., must be accurately estimated to ensure appropriate ... |
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| Ankudinov Ship Squat Predictions - Part 1: Theory, Parameters, and FORTRAN Programs |
Aug-2009 |
16 pages |
| Authors:
Michael J Briggs; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Squat is the reduction in underkeel clearance (UKC) between a vessel at-rest and underway due to the increased flow of water past the moving hull. The forward motion of the ship pushes water ahead of it that must return around the sides and under the keel. This water motion induces a relative velocity between the ship and the surrounding water that causes a water level depression in which the ship ... |
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| Houston-Galveston Navigation Channels, Texas Project. Navigation Channel Sedimentation Study, Phase 2 Plan Simulations |
Aug-2009 |
77 pages |
| Authors:
Jennifer N Tate; Cassandra G Ross; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report documents the results of several plan scenarios on the sedimentation behavior in the Houston-Galveston Ship Channel area. The U.S. Army Engineer District, Galveston, recently enlarged the Houston Ship Channel in depth and width. Preliminary evaluations of the enlarged channel indicate a higher than anticipated rate of deposition in the channel reach near Atkinson Island. A Coastal and Hydraulics Laboratory investigation (Tate and Berger 2006) was charged with determining ... |
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| Locally Conservative, Stabilized Finite Element Methods for a Class of Variable Coefficient Navier-Stokes Equations |
Aug-2009 |
34 pages |
| Authors:
Matthew W Farthing; Christopher E Kees; Moira T Fong; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Computer simulation of three-dimensional incompressible flow is of interest in many navigation, coastal, and geophysical applications. This report is the fifth in a series of publications that documents research and development on a state-of-the-art computational modeling capability for fully three-dimensional two-phase fluid flows with vessel/ structure interaction in complex geometries. It is primarily concerned with model verification, often defined as solving the equations right. Model verification is a critical step ... |
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| Martin County, FL, Case Study: Physical and Economic Performance of Martin County Federal Shore Protection Project During 2004 Tropical Season. Flood and Coastal Storm Damage Reduction Program |
Aug-2009 |
81 pages |
| Authors:
Mark B Gravens; Linda K Lent; Brian K Harper; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report presents the details of a case study analysis of the physical and economic performance of the Martin County Federal shore protection project during the 2004 tropical season. The goal of the analysis was to estimate the damages prevented by the shore protection project in Martin County over the 2004 tropical season, which brought two landfalling hurricanes across the southern end of Hutchinson Island just south of the project. ... |
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| Hurricane Ivan Nearshore Wave Data, Perdido Pass, Alabama |
Aug-2009 |
31 pages |
| Authors:
Margaret A Sabol; James P McKinney; Linda Lillycrop; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| In November 2001, the U.S. Army Engineer District, Mobile, funded the Coastal and Hydraulics Laboratory, U.S. Army Engineer Research and Development Center (ERDC) to deploy a bottom mounted wave gage in 30 ft of water approximately 1 mile offshore of Perdido Pass, AL. On 16 September 2004, Hurricane Ivan made landfall 20 miles west of Perdido Pass as a category 3 hurricane with 120 miles-per-hour maximum winds. The gage was ... |
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| Flood and Coastal Storm Damage Reduction Program. Beach-fx User's Manual: Version 1.0 |
Aug-2009 |
262 pages |
| Authors:
Mark B Gravens; Cory M Rogers; Kristine A Jacobson; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The need to strengthen the linkages between engineering analyses (project performance and evolution) and planning functions (alternative analysis and economic justification) with respect to coastal storm damage reduction projects within the Corps has led to the development of the life-cycle simulation model Beach-fx. Beach-fx provides a comprehensive analytical framework for evaluating the physical performance and economic benefits and costs of shore protection projects, particularly beach nourishment along sandy shores. The ... |
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| Idealized Marsh Simulations: Sensitivity of Hurricane Surge Elevation and Wave Height to Seabed Elevation |
Jul-2009 |
12 pages |
| Authors:
Mary A Cialone; Jennifer L Irish; Nicolas M Loder; Ty V Wamsley; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The purpose of this CHETN is to examine changes in peak surge elevation and wave height associated with changes in the elevation of an idealized coastal feature. Landscape features with vegetation have the potential to reduce storm surge elevations and dissipate wave energy. Land elevations greater than the storm surge elevation act as a physical barrier and create bathymetric resistance for the surge and waves. Landscape features such as marshes ... |
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| Influence of Marsh Restoration and Degradation on Storm Surge and Waves |
Jul-2009 |
11 pages |
| Authors:
Jane M Smith; Mary A Cialone; Ty V Wamsley; Joannes Westerink; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The purpose of this CHETN is to examine storm surge and wave reduction benefits of marsh restoration, as well as the impact of future wetland degradation on local surge and wave conditions. Storm surge simulations of representative moderate and severe hurricanes were performed using the ADCIRC storm surge model, with the inclusion of radiation stress gradients from the STWAVE nearshore wave model. Coupled model simulations were made for wetland landscape ... |
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| A Review of Methods for Moving Boundary Problems |
Jul-2009 |
27 pages |
| Authors:
C E Kees; M W Farthing; R C Berger; T C Lackey; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| State-of-the-art numerical methods for solving moving boundary problems arising from multiphase flow and fluid-structure interaction modeling are reviewed. The emphasis of the review is on robust methods that do not require the mesh to conform to the moving boundary. The impetus for this review is the Coastal and Hydraulics Laboratory's mission in navigation. Accurately predicting the effect of a vessel on a waterway and the vessel motion are required to ... |
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| Integrated Weed Management Strategies for Control of Hydrilla |
Feb-2009 |
7 pages |
| Authors:
Linda S Nelson; Judy F Shearer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This technical note describes the results of a laboratory investigation conducted to evaluate the effectiveness of the herbicide diquat (6,7-dihydrodipyrido[1,2-a:2',1'-c]pyrazinediium), and the fungal pathogen Mycoleptodiscus terrestris (Gerd.) Ostazeski, applied alone and in combination with one another, as an integrated weed management strategy against the nuisance aquatic plant, hydrilla (Hydrilla verticillata (L.f.) Royle). |
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| Simulation of Reactive Constituent Fate and Transport in Hydrologic Simulator GSSHA |
Jan-2009 |
12 pages |
| Authors:
Charles W Downer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The purpose of this System-Wide Water Resources Program (SWWRP) technical note is to describe the new fate and transport routines in the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model. GSSHA is a watershed analysis and management tool that has the ability to simulate the movement of water, sediment and associated constituents at fine-scale increments ( 100 m) for fine temporal scales (seconds) over watershed scale areas. The resulting tool is ... |
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| Screening of Various Herbicide Modes of Action for Selective Control of Algae Responsible for Harmful Blooms |
Jan-2009 |
12 pages |
| Authors:
Angela G Poovey; Michael D Netherland; Carole A Lembi; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This research seeks to identify reduced risk chemical compounds that have selective activity against harmful algal blooms (HAB). The U.S. Army Corps of Engineers is responsible for managing numerous large reservoirs throughout the country, and the recent proliferation of HAB and the limited tools available for controlling these nuisance algae at a large scale have caused many Corps resource managers to seek non-conventional control methods. Numerous herbicides that target plant-specific ... |
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| TWAVE: A Modeling System for Flooding and Inundation of Islands by Tropical Storms |
Jan-2009 |
90 pages |
| Authors:
Zeki Demirbilek; Jane M Smith; Alejandro Sanchez; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report, the first of a series, describes the coastal modeling package TWAVE (Typhoon and WAVE) developed under the Surge and Wave Island Modeling Studies (SWIMS) project capable of modeling tropical cyclone winds, waves, storm surge, and coastal inundation. The TWAVE flood and inundation package is a practice-oriented engineering modeling tool. The first version of TWAVE is described in this report and will be updated based on user feedback in ... |
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| Shear Stress Estimates for Combined Wave and Surge Overtopping at Earthen Levees |
Jan-2009 |
23 pages |
| Authors:
Steven A Hughes; Norberto C Nadal; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The Coastal and Hydraulics Engineering Technical Note (CHETN) described herein provides empirical equations for estimating shear stresses on the land-side slope of earthen levees resulting from the combination of storm surge steady overflow and unsteady overtopping of irregular waves. A worked example provides guidance on application of the empirical equations.s |
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| Sediment Equilibrium and Diffusive Fluxes in Relation to Phosphorus Dynamics in the Turbid Minnesota River |
Jan-2009 |
36 pages |
| Authors:
William F James; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Much is known regarding the importance of surface and subsurface runoff from agricultural watersheds in the regulation of soluble phosphorus (P) concentration in large river systems. However, in-stream processes such as equilibrium P flux from suspended sediment and diffusive P flux from deposited sediment stored in river channels may also play a role in soluble P control. Ranges in equilibrium partitioning between aqueous and exchangeable particulate P pools associated with ... |
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| Wave Transformation Over Reefs: Evaluation of One-Dimensional Numerical Models |
Jan-2009 |
208 pages |
| Authors:
Zeki Demirbilek; Alejandro Sanchez; Okey G Nwogu; Donald L Ward; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Three one-dimensional (1D) numerical wave models are evaluated for wave transformation over reefs and estimates of wave setup, runup, and ponding levels in an island setting where the beach is fronted by fringing reef and lagoons. The numerical models are based on different governing equations. BOUSS-1D and RBREAK2 are phase-resolving models that respectively solve the time-dependent Boussinesq and shallow water equations. WAV1D solves the 1D wave-averaged energy conservation equation. Laboratory ... |
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| Computational Model of a Lock Filling System |
Jan-2009 |
17 pages |
| Authors:
Richard L Stockstill; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note (CHETN) demonstrates the construction of a three-dimensional (3-D) computational flow model of a lock filling system. A numerical flow model capable of simulating flows in navigation locks will provide an economical tool for detailed evaluation of locks and lock components. A description of the construction, implementation, and evaluation of a 3-D model of a lock filling system is presented. Computational and hydraulic engineering ... |
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| Sea Level Rise and Consequences for Navigable Coastal Inlets |
Jan-2009 |
8 pages |
| Authors:
Nicholas C Kraus; Julie D Rosati; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Global sea level is expected to rise over the next 100 years. Changes in sea level will alter the functioning of coastal inlet navigation channels and structures such as jetties designed to stabilize the channel and improve navigability. Threats to navigation at stabilized coastal inlets and intercoastal waterways caused by sea-level rise are identified and discussed. Concerns for navigation include jetty flanking (overwash on the shoreward terminus of the jetty); ... |
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| Rapid Methods for Estimating Navigation Channel Shoaling |
Jan-2009 |
17 pages |
| Authors:
Nicholas C Kraus; Julie D Rosati; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The US Army Corps of Engineers' navigation mission is to provide safe, reliable, and efficient waterborne transportation systems (channels, harbors, and waterways) for the movement of commerce, national security needs, and recreation. Federally maintained channels through as many as 600 coastal inlets and through bays, estuaries, and rivers are therefore dredged. Many of these navigation channels have been deepened, widened, and lengthened to accommodate larger vessels and greater transit speed, ... |
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| Hurricane Ike Along the Upper Texas Coast: An Introduction |
Jan-2009 |
7 pages |
| Authors:
Lihwa Lin; Nicholas C Kraus; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This paper serves as an introduction for a group of papers documenting the severe coastal damage caused by Hurricane Ike that struck the Texas coast and southwest Louisiana coast in mid-September 2008. Background is first given to orient readers to the coastal area. The unusually long storm surge accompanying the hurricane is examined and its consequences for evacuation and property damage noted. Selected observations of damage to structures on west ... |
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| Barbers Point Harbor, Hawaii, Jetty Modification Study |
Nov-2008 |
179 pages |
| Authors:
Ivano Melito; Michael J Briggs; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| A series of laboratory experiments were conducted for a range of model ships, irregular waves, wave-induced longshore currents, and jetty lengths to optimize the length of a proposed entrance channel jetty at Barbers Point Harbor, Hawaii. Eleven jetty configurations were studied on both sides of the entrance channel, with lengths varying from no-jetty to the proposed 450-ft length. Unidirectional spectral waves with wave periods of 6, 10, 14, and 18 ... |
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| River Diversions and Shoaling |
Nov-2008 |
22 pages |
| Authors:
Joseph V Jr; Letter; Pinkard; C F Jr; Nolan K Raphelt; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note describes the current knowledge of the potential impacts of river diversions on channel morphology, especially induced sedimentation in the river channel. Processes considered in this note are those most pertinent to riverine, as opposed to estuarine, aspects of diversions. In particular, this note provides general guidance on the physical process issues, outlines strategies for more effective application of existing tools, and summarizes the ... |
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| Wave Climate and Littoral Sediment Transport Study for Virginia Beach, VA - Rudee Inlet to Cape Henry, Hydraulic Model Study |
01-Sep-2008 |
145 pages |
| Authors:
Michael J Briggs; Edward F Thompson; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The Norfolk District is preparing an Environmental Assessment for the use of sand sources off the coast of Cape Henry for future maintenance of the Virginia Beach, VA, shoreline. The primary purpose is to maintain a buffer for hurricane protection for structures landward of the existing beach. The Cape Henry Borrow Area is being considered as a sand source. The plan borrow scenario involves removing approximately 34.2 M cu yd ... |
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| Southeast Oahu Coastal Hydrodynamic Modeling with ADCIRC and STWAVE |
01-Jul-2008 |
61 pages |
| Authors:
Jane M Smith; Mary A Cialone; Mitchell E Brown; Kent K Hathaway; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This study provides the Honolulu District (POH) with numerical modeling tools for understanding nearshore circulation and sediment transport for Southeast Oahu (SEO). Circulation and wave models are developed and validated for this region and can be applied to assess sediment transport potential for various forcing conditions and to determine the likelihood of accretional and erosional areas within the model domain. Application of a wave model includes the generation of a ... |
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| Morphologic Examination of the Stability of Pass Cavallo, Texas |
01-May-2008 |
48 pages |
| Authors:
Nicholas C Kraus; Brian K Batten; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The study concerns the cross-sectional area stability of Pass Cavallo, a natural coastal inlet located in the southwest corner of Matagorda Bay, Texas. The width of Pass Cavallo has decreased since opening of the Matagorda Ship Channel (MSC) entrance to Matagorda Bay in 1966. The process of narrowing began after separation of Matagorda Bay into East Matagorda Bay and the present Matagorda Bay by formation of the Colorado River delta ... |
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| Estimation of Combined Wave and Storm Surge Overtopping at Earthen Levees |
MAY 2008 |
17 pages |
| Authors:
Steven A. Hughes; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This Coastal and Hydraulics Engineering Technical Note (CHETN) provides empirical equations for estimating several parameters of unsteady flow resulting from the combination of steady storm surge overflow and overtopping of irregular waves at a trapezoidal-shaped earthen levee. Equations are given for the average overtopping discharge and the cumulative probability distribution of instantaneous overtopping discharge. On the landward-side slope, empirical equations can be used to estimate the mean flow depth, mean ... |
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| Concept Design for Emergency Closure System for Inland Navigation Structures |
MAY 2008 |
15 pages |
| Authors:
Jr Hite John E.; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Emergency closures systems are needed at U.S. Army Corps of Engineers navigation projects to reduce damages and economical impacts associated with uncontrolled flow through the project due to failure of a lock or a dam gate. The most likely cause of failure is a navigation accident although an equipment malfunction or an act of terrorism can also result in failure. This Coastal and Hydraulics Engineering Technical Note (CHETN) provides information ... |
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| Impact of Savannah Harbor Deep Draft Navigation Project on Tybee Island Shelf and Shoreline |
01-Apr-2008 |
205 pages |
| Authors:
Jane M Smith; Donald K Stauble; Brian P Williams; Michael J Wutkowski; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The purpose of this study is to determine if the Savannah Harbor Deep Draft Navigation Project is adversely impacting the shores of Tybee Island (including sand lost from the beach and the Tybee shelf). The study methodology includes numerical modeling of waves, currents, water levels, and sediment transport rates and sediment budgets analysis for pre-project and post- project conditions. Sediment budgets were developed for the period 1854 to 1897 (pre-project) ... |
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| Long-Term Structural Solution for the Mouth of Colorado River Navigation Channel, Texas |
01-Apr-2008 |
188 pages |
| Authors:
Lihwa Lin; Nicholas C Kraus; Daniel J Heilman; Robert C Thomas; Ernest R Smith; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report describes a study performed for the U.S. Army Engineer District, Galveston, to develop a structural solution involving modified or new jetties in support of a reliable shallow-draft channel at the Mouth of the Colorado River (MCR), Texas. The site has experienced excessive sediment shoaling that has denied full project features to navigation channel users. The study took a multidisciplinary approach involving field measurements, shoreline analysis, numerical modeling of ... |
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| Boat-Wave-Induced Bank Erosion on the Kenai River, Alaska |
01-Mar-2008 |
145 pages |
| Authors:
Stephen T Maynord; David S Biedenham; Craig J Fischenich; Jon E Zufelt; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The Kenaitze Indian Tribe requested that the U.S. Army Engineer Research and Development Center (ERDC) determine the relative contribution of boat-wake-induced bank erosion to total bank erosion along the Kenai River. The approach used in this study consisted of a delineation of boat wave characteristics along the study reach and a geomorphic and bank stability assessment. This analysis showed that, at specific times of the year and at specific locations, ... |
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| Wave Modeling for Jetty Rehabilitation at the Mouth of the Columbia River, Washington/Oregon, USA |
MAR 2008 |
142 pages |
| Authors:
Zeki Demirbilek; Lihwa Lin; Okey G. Nwogu; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The U.S. Army Engineer District, Portland (NWP), maintains three rubble-mound jetties at the Mouth of the Columbia River (MCR) in support of the Federal navigation project. The north and south entrance jetties constrain the current to scour the navigation channel, stabilize the location of the channel and entrance, and provide wave protection to vessels transiting the MCR. A third jetty (Jetty A) inside the MCR serves primarily as a training ... |
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| Stability and Overtopping Study of Montrose to Irving Reach of Chicago, IL, Shoreline Revetment |
FEB 2008 |
36 pages |
| Authors:
Elizabeth C. Burg; Jeffrey A. Melby; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| The stepped stone revetment along the City of Chicago's Lake Michigan shoreline, directly south of Montrose Harbor, is failing and in need of repair. The Illinois Historical Preservation Agency (IHPA) requested that the cut limestone blocks from the original structure be evaluated for use in the new revetment design. A physical model study was conducted at the U.S. Army Engineer Research and Development Center's Coastal and Hydraulics Laboratory to assist ... |
|
| The Application of Conceptual Models to Ecosystem Restoration |
FEB 2008 |
24 pages |
| Authors:
Craig Fischenich; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| In its report to the Chief of Engineers, the U.S. Army Corps of Engineers (USACE) Environmental Advisory Board (EAB) recommended that (USACE, EAB 2006): The Corps should encourage the explicit use of conceptual models to guide ecosystem restoration planning and implementation. Conceptual models should be required as a first step in the planning process, as they provide a key link between early planning (e.g., an effective statement of problem, need, ... |
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| Physical Model Study of Wave Action in New Thomsen Harbor, Sitka, Alaska |
FEB 2008 |
127 pages |
| Authors:
Steven A. Hughes; Julie Cohen; Hugh F. Acuff; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| A 1-to-75 scale physical model of Sitka, Alaska, encompassing portions of the Western Channel, the region protected by the three breakwaters, New Thomsen Harbor, and the Sitka and Japonski Island shorelines, was constructed at the modeling facilities of the U.S. Army Engineer Research and Development Center's Coastal and Hydraulics Laboratory. The primary objectives of the physical model study were to (1) establish the cause for wave action within the harbor ... |
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| Restoration of Delta Streams: A Case History and Conceptual Model |
FEB 2008 |
20 pages |
| Authors:
K. J. Killgore; Jan J. Hoover; Catherine E. Murphy; Kent D. Parrish; David R. Johnson; Karen F. Myers; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| Delta streams, forming in the floodplains of large river systems, are widespread throughout the United States. Delta streams are most prevalent in the Mississippi Embayment, also referred to as the lower Mississippi River Basin. The alluvial flood-plain deposits are typically rich in organic material. Consequently, most delta streams have been altered through intense agricultural activities and flood control measures. Low water, excessive sedimentation in smaller delta streams, and the accumulation ... |
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| Incorporating Rubble Mound Jetties in Elliptic Harbor Wave Models |
FEB 2008 |
14 pages |
| Authors:
Vijay Panchang; Jianfeng Zhang; Zeki Demirbilek; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| Simulation models based on the elliptic mild- or steep-slope wave equation are frequently used to estimate wave properties needed for harbor engineering calculations. To enhance the practical applicability of such models, a method is developed to accommodate the effects of rubble mound structures that are frequently found along the sides of harbor entrance channels. The results of this method are found to match those of other mathematical models under appropriate ... |
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| Estimation of Overtopping Flow Velocities on Earthen Levees Due to Irregular Waves |
JAN 2008 |
19 pages |
| Authors:
Steven A. Hughes; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| This Coastal and Hydraulics Engineering Technical Note (CHETN) provides empirical equations to estimate flow velocity and flow thickness resulting from irregular waves overtopping a trapezoidal-shaped earthen levee. The CHETN summarizes published European research with the goal of providing practicing engineers with design guidance in a concise and understandable form. Worked examples illustrate application of the empirical equations. |
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| Cumulative Effects of Channel and EBB Shoal Dredging on Inlet Evolution in Southwest Florida, USA |
Jan-2008 |
14 pages |
| Authors:
Nicholas C Kraus; Mohamed A Dabees; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| This paper describes analysis and numerical modeling of tidal inlets in southwest Florida, where coverage of large temporal and spatial scales is necessary. A methodology is introduced for examining the response of complex inlet systems to dredging, including modeling of regional hydrodynamics, wave-current interaction, sediment transport, and application of the Inlet Reservoir Model. A case study for Longboat Pass, Florida, demonstrates this methodology. Longboat Pass is one of several tidal ... |
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| Barrier Beach Breaching from the Lagoon Side, With Reference to Northern California |
2008 |
12 pages |
| Authors:
Nicholas C. Kraus; Kiki Patsch; Sophie Munger; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| During the dry season in California, when storm action is limited and river flow is weak, the mouths of many estuaries close, creating barrier beaches and ponding water in the backing lagoons. If these barrier beaches do not breach naturally or are not manually breached, flooding hazards can develop in adjacent low-lying areas. Many barrier beaches are breached manually to facilitate migration of salmon or the threatened steelhead trout. Natural ... |
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| An Evaluation of the Level 1 Natural Resources Inventory Process on Corps Operational Projects |
DEC 2007 |
11 pages |
| Authors:
Chester O. Martin; Jeffrey F. Krause; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| Engineer Regulation (ER) 1130-2-540 (U.S. Army Corps of Engineers (USACE) 2005) mandates that natural resource inventories be conducted on all Corps of Engineers (CE) operational projects. The basic inventory to be conducted at Corps projects was identified by the CE Stewardship Advisory Team (SAT) as the Natural Resources Level I Inventory, described in Krause et al. (2004). In 2005, a study was undertaken as part of the Ecosystem Management and ... |
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