| In Situ Measurements of Coherent Structures and Turbulence |
07-Apr-2009 |
6 pages |
| Authors:
John Trowbridge; W R Geyer; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING
|
 | The long-term objective of our research is to quantify the structure of turbulence in fluvial and estuarine environments, in order to develop remote-sensing tools for environmental assessment as well as to improve numerical simulations. The objectives of this program were: (1) to quantify the turbulence length scale and turbulent dynamics in an estuary under varying stratification conditions and geometries, including relatively uniform boundary-layer flows and highly disrupted wake flow conditions; ... |
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| A Partnership for Modeling the Marine Environment of Puget Sound, Washington |
30-Mar-2009 |
11 pages |
| Authors:
Jan Newton; Skip Albertson; Frederick R Stahr; P F Wang; Robert K Johnston; William Winn; Mark Warner; Allan Devol; Mitsuhiro Kawase; Randy Shuman; Miles Logsdon; Bruce Nairn; WASHINGTON UNIV SEATTLE
|
| In 2002 National Oceanographic Partnership Program funded a partnership of a university, federal, state and local government agencies, and a private non-profit corporation who share a common interest and concern about a body of water -- Puget Sound, Washington. Designated as the Puget Sound Marine Environmental Modeling (PSMEM) partnership, the objectives of the partnership were to conduct scientific research aimed at developing fundamental understanding of the Sound's working, as well ... |
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| The Distribution of Breaking and Non-Breaking Wave Impact Forces |
Mar-2009 |
40 pages |
| Authors:
Anne M Fullerton; Ann Marie Powers; Don C Walker; Susan Brewton; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD HYDROMECHANICS DIRECTORATE
|
| The magnitude of wave impact loads varies greatly, depending upon whether the wave is breaking, as well as on the wave height, length, steepness, and the geometry and immersion of the impacted structure. This report describes an experiment that was performed to characterize the distribution of breaking and non-breaking wave impact loads over a surface, similar to those performed in 2005 with non-breaking wave impact loads and those performed in ... |
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| Influence of the Antarctic Circumpolar Current on the Atlantic Meriodional Circulation |
Mar-2009 |
65 pages |
| Authors:
David J Widener; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The physics of the Meridional Overturning Circulation and inter-hemispheric heat transport is explored with an emphasis on the upper and central ocean using a general ocean circulation model. The ability of the Antarctic Circumpolar Current, bathymetry, and surface temperature and wind stresses to influence the MOC and inter hemispheric heat transport is considered. All experiments are based on an idealized model of intermediate complexity with analysis focused on the interplay ... |
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| Everglades: The Catalyst to Combat the World Water Crisis |
27-Feb-2009 |
50 pages |
| Authors:
Pantano; Alfred A Jr; ARMY WAR COLL CARLISLE BARRACKS PA
|
| Life including mankind will not survive on earth without sufficient clean fresh water. The world is facing a water crisis of apocalyptic proportion. In part, the crisis was created by well-intended actions, waste, and ambivalence of mankind. The crisis is intensified by rampant development, exponential population growth, and climate change. There are parallel solutions to the crisis. They include conservation and reuse of water, desalination of seawater, and timely restoration ... |
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| Frontiers of Karst Research: Proceedings and recommendations of the workshop held in San Antonio, Texas on 3-5 May 2007. Karst Waters Institute Special Publication 13 |
08-Jan-2009 |
131 pages |
| Authors:
William B White; Jonathan B Martin; KARST WATERS INST CHARLES TOWN WV
|
| This project was a Workshop, held in San Antonio, Texas, May 3-5, 2007. The objective of the workshop was to assess the current state of knowledge of karst aquifers, caves, and the broader scientific values that could be derived from their study. The term karst is used to describe landscapes underlain by soluble rocks and as a result has developed landforms such as sinkholes, sinking streams, and caves. Such landscapes ... |
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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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| 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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| 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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| Evaluation of the Snap Sampler for Sampling Ground Water Monitoring Wells for Inorganic Analytes |
Dec-2008 |
74 pages |
| Authors:
Louise V Parker; Nathan D Mulherin; Gordon E Gooch; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| Abstract: Laboratory studies and a field demonstration were conducted to determine the ability of the Snap Sampler to recover representative concentrations of inorganic analytes, including metals, from ground water. For the laboratory studies, concentrations of analytes in Snap Sampler samples were compared with concentrations of the analytes in samples collected from a standpipe (i.e., control samples). These studies clearly demonstrated that Snap Sampler concentrations were comparable to control sample concentrations. ... |
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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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| An Integrated Approach to Understand Relationships Between Shallow Water Benthic Community Structure and Ecosystem Function |
Nov-2008 |
328 pages |
| Authors:
Linda C Schaffner; Iris C Anderson; Jennifer W Stanhope; David J Gillett; William J Metcalfe; Alice M Brlawski; VIRGINIA INST OF MARINE SCIENCE GLOUCESTER POINT
|
| Human activities along our nation's coasts often lead to habitat modification, pollution, and overexploitation of living resources in coastal and estuarine waters (U.S. Commission on Ocean Policy 2004). Coastal areas are the most developed regions of the United States. In addition to recreational and leisure activities, these areas support commercial fishing, aquaculture, shipping, and defense activities. Numerous human activities can have detrimental effects on biodiversity and the provision of ecosystem ... |
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| Reinventing Amphibious Hydrography: The Inchon Assault and Hydrographic Support for Amphibious Operations |
31-Oct-2008 |
25 pages |
| Authors:
Shaw; Ronald R Jr; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| This essay utilizes the 1950 Korean War amphibious operation at Inchon as an illustrative case study to analyze how the challenges of an unknown amphibious battlespace can be overcome through hydrographic support and how hydrographic information is required by the operational commander in order to achieve mission success. Hydrography data is shown to be crucial for planning and decision making in the modern joint military environment and must be maintained ... |
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| Littoral Drifter for Sensing Properties of Shallow Waters and Sediments: Riverine Drifter Field Trials July 10, August 13 and September 10, 2008 |
08-Oct-2008 |
70 pages |
| Authors:
W G Williams; Luca Centurioni; CLEARWATER INSTRUMENTATION INC WATERTOWN MA
|
| Shallow water environments that exist where rivers and estuaries meet the ocean are often characterized by regimes of energetic currents and shallow rapidly varying bathymetry which in the case of easily mobilized sediments can by spatially modified over short periods. The Riverine drifter has the observational tools to measure the characteristics of the estuarine environment. It combines the position accuracy of GPS locations, 3-dimensional current measuring ability of an Acoustic ... |
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| Bioremediation Approaches for Treating Low Concentrations of N-Nitrosodimethylamine in Groundwater |
Oct-2008 |
151 pages |
| Authors:
Jalal Hawari; Diane Fournier; Paul Hatzinger; SHAW ENVIRONMENTAL INC LAWRENCEVILLE NJ
|
| NDMA is a potent carcinogen and an emerging groundwater pollutant. The objective of this SERDP project was to study NDMA biodegradation and to develop in situ and ex situ bioremediation strategies for the compound. A detailed summary of the relevant findings for this project is provided in the Executive Summary of this report. |
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| Bacterial Degradation of Nitrogenous Energetic Compounds (NEC) in Coastal Waters and Sediments |
10-Sep-2008 |
59 pages |
| Authors:
T J Boyd; C L Osburn; Michael T Montgomery; S W Walker; L J Hamdan; NAVAL RESEARCH LAB WASHINGTON DC CHEMICAL DYNAMICS AND DIAGNOSTICS BRANCH
|
| Once released in the environment, either through detonation, casing breakage, or by slow leaks from unexploded ordnance (UXO), nitrogenous energetic compounds (NEC, such as TNT, HMX, RDX) may sorb onto particulates, partition to dissolved organic matter, or remain dissolved in aqueous media. Our hypothesis was that NEC would be transient in coastal ecosystems. This was based primarily on the understanding that microbial grown in these systems is typically nitrogen-limited and ... |
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| Effects of Hurricane Katrina-Related Levee Failures on Wetland Sediments |
01-Sep-2008 |
46 pages |
| Authors:
Jeffery Steevens; Burton Suedel; Alan Kennedy; Sandra Brasfield; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| The U.S. Army Engineer Research and Development Center (ERDC) Environmental Laboratory, Vicksburg, MS, conducted a study to determine the extent to which Katrina floodwaters in the New Orleans area may have had impacts on wildlife habitat and other biological resources in surrounding areas. These experiments were conducted as part of the Interagency Performance Evaluation Task Force (IPET), which is investigating environmental impacts originating from the failure of the hurricane protection ... |
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| System-Wide Water Resources Program Nutrient Sub-Model (SWWRP-NSM) Version 1.1 |
01-Sep-2008 |
55 pages |
| Authors:
Zhonglong Zhang; Billy E Johnson; Terry K Gerald; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| This report discusses major developments that have occurred since the release of NSM Version 1.0. These improvements were in the areas of: 1) partitioning of nutrients (dissolved and adsorbed) within surface runoff, 2) mass transfer of nutrients between the soils and overlying water column, 3) erosion and sedimentation of particulate nutrients, and 4) soil plant dynamics. Nutrients at or near the soil surface can be transformed to overland flow in ... |
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| Prediction of Groundwater Quality Down-gradient of In Situ Permeable Treatment Barriers and Fully-remediated Source Zones |
01-Sep-2008 |
127 pages |
| Authors:
ARIZONA STATE UNIV TEMPE
|
| In situ permeable treatment barriers (PTBs) are designed such that contaminated groundwater flows through an engineered treatment zone within which contaminants are eliminated or the concentrations are significantly reduced. These systems are often considered for the containment of dissolved contaminant plumes, or for controlling the discharge and larger-scale impact of dissolved contaminants from source zones to aquifers. Previous studies have concluded that a better understanding of the subsequent improvement in ... |
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| The China-India-Pakistan Water Crisis: Prospects for Interstate Conflict |
01-Sep-2008 |
73 pages |
| Authors:
James F Brennan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis examines the prospects of conflict caused by water scarcity in China, India, and Pakistan. The thesis uses indicators of water tensions, including water quality, water quantity, the management of water, state institutions, and national water philosophy. On its own, water shortages will unlikely be the only cause of regional conflict; however, water resources may be one catalyst of conflict or instability in the already fragile region. The indicators ... |
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| Environmental Fate and Exposure Assessment for Arsenic in Groundwater |
Aug-2008 |
28 pages |
| Authors:
Janet G Hering; David Burris; H J Reisinger; Peggy O'Day; CALIFORNIA INST OF TECH PASADENA
|
| The fate and transport of arsenic were examined at two Department of Defense (DoD) sites. At Tyndall Air Force Base, Florida arsenic contamination is the result of application of arsenical herbicides. At the Devens Reserve Forces Training Area (Ft. Devens), Massachusetts, naturally-occurring arsenic has been mobilized by application of enhanced reductive dechlorination (ERD) technology, designed to remediate contamination by chlorinated solvents. These two sites were compared with respect to plume ... |
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| Current and Historical Sediment Loads in the Lower Mississippi River |
01-Jul-2008 |
170 pages |
| Authors:
Colin Thorne; Oliver Harmar; Nick Clifford; Richard Measures; Chester Watson; David Biedenham; NOTTINGHAM UNIV (UNITED KINGDOM) DEPT OF GEOGRAPHY
|
| Questions concerning past, present, and future temporal trends in the sediment load of the Lower Mississippi River are of great importance because the redistribution of available Mississippi River sediment is vital to on-going efforts to reduce land loss and restore coastal marshes and wetlands in Louisiana. This document reports the results of a 1-yr study performed by Nottingham University, Halcrow and the Biedenharn Group in collaboration with the Waterways Experiment ... |
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| Frequently Asked Questions Regarding Management of Chlorinated Solvents in Soils and Groundwater |
Jul-2008 |
39 pages |
| Authors:
Tom Sale; Paul Johnson; Charles Newell; Hans Stroo; Robert Hinchee; ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM OFFICE (DOD) ARLINGTON VA
|
| The following Frequently Asked Questions (FAQs) document provides a concise overview of current knowledge regarding management of subsurface chlorinated solvent releases. The envisioned audience is state regulators, federal regulators, consultants, Department of Defense (DOD) staff, and community members involved in selecting remedies for chlorinated solvent sites. In the interest of brevity, the FAQs and the companion document Guide for Selecting Remedies for Subsurface Releases of Chlorinated Solvents assume that the ... |
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| Comparison and Validation of Point Spread Models for Imaging in Natural Waters |
20-Jun-2008 |
|
| Authors:
Alan Weidemann; Robert Arnone; Weilin Hou; Deric Gray; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
 | It is known that scattering by particulates within natural waters is the main cause of the blur in underwater images. Underwater images can be better restored or enhanced with knowledge of the point spread function (PSF) of the water. This will extend the performance range as well as the information retrieval from underwater electro-optical systems, which is critical in many civilian and military applications, including target and especially mine detection, ... |
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| Condition Assessment Methodology for Spillways |
01-Jun-2008 |
126 pages |
| Authors:
Stuart Foltz; Luc E Chouinard; Jean Robichaud; Ralph Wittebolle; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| The U.S. Army Corps of Engineers (USACE) has primary responsibility for maintaining and operating U.S. navigable waterways and Federal flood control dams. Dam safety is a critical priority, but assessment and prioritization of dam safety concerns is difficult. This report describes a condition assessment and prioritization methodology for structural, mechanical, electrical, and operational aspects of spillways. The methodology was developed to help provide a firmer engineering basis for prioritization and ... |
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| A Guide to Alaskan Black Spruce Wetland Bryophytes: Species Specific to Delineation for Interior and South Central Regions |
01-Jun-2008 |
31 pages |
| Authors:
Rodney D Seppelt; Gary A Laursen; Robert W Lichvar; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| Currently, there is an effort underway to update and revise the U.S. Army Corps of Engineers (Corps) wetland delineation manual (Wakeley 2002) in support of Section 404 of the Clean Water Act (CWA) (33U.S.C.1344). As part of this updating, the United States has been divided into ten subregions. The new subregion boundaries follow an ecosystem-based region classification that has also been used in the development of national hydric soil indicators ... |
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| Development of Permeable Reactive Barriers (PRB) Using Edible Oils |
Jun-2008 |
159 pages |
| Authors:
Robert C Borden; NORTH CAROLINA STATE UNIV AT RALEIGH
|
| At the start of this project, neat and emulsified vegetable oil had been used at several different sites to simulate anaerobic biodegradation of chlorinated solvents and other contaminants in groundwater. However, little was known about the transport, retention and biodegradation of these materials in the subsurface or the impact of these materials on contaminant fate. This project included a series of laboratory, field and numerical modeling studies aimed at improving ... |
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| Demonstration and Evaluation of Solid Phase Microextraction for the Assessment of Bioavailability and Contaminant Mobility |
Jun-2008 |
102 pages |
| Authors:
Danny Reible; Gui Lotufo; Alison Skwarski; David Lampert; XiaoXia Lu; TEXAS UNIV AT AUSTIN
|
| The goal of the laboratory demonstration effort is to develop and standardize a procedure using field deployable solid phase micro extraction (SPME) for the measurement of freely-dissolved pore water concentrations and demonstrate the relationship of these measurements to contaminant flux, bioavailability and bioaccumulation. Pore water concentrations drive contaminant fluxes below the biologically active layer and in contaminated sediment caps a method for easily determining these levels provides a better means ... |
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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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| An Assessment of River Resources for Louisiana Coastal Land Preservation |
01-May-2008 |
50 pages |
| Authors:
Chester C Watson; David S Biedenharn; J C Fischenich; BIEDENHARN GROUP LLC VICKSBURG MS
|
| This report is a portion of a larger investigation addressing current and historical sediment loads in the Mississippi River. In this report, we address four primary tasks: 1) quantify sediment discharges from the Mississippi River at existing diversions; 2) assemble estimates of sediment quantiles and sediment sizes available for diversions planned to promote coastal marsh restoration; 3) develop estimates of sediment loads required for restorations and estimates of uncertainty; and ... |
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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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| Natural Attenuation of Perchlorate in Groundwater: Processes, Tools and Monitoring Techniques |
01-Apr-2008 |
81 pages |
| Authors:
Robert C Borden; M T Lieberman; SOLUTIONS INDUSTRIAL AND ENVIRONMENTAL SERVICES RALEIGH NC
|
| The purpose of this document is to provide users with information on 1) fate, transport and transformation of perchlorate in different geochemical environments; 2) emerging and/or specialized technologies for evaluating perchlorate attenuation in groundwater; and 3) a tiered approach for evaluating the MNA of perchlorate. This protocol does not provide a step-by-step guide to MNA of perchlorate. Instead, it presents several procedures to aid the user in determining if natural ... |
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| Remediation of TNT and RDX in Groundwater Using Zero-Valent Iron Permeable Reactive Barriers |
Apr-2008 |
67 pages |
| Authors:
Rick Johnson; Paul Tratnyek; OREGON HEALTH AND SCIENCE UNIV BEAVERTON
|
| This Cost and Performance Report documents the demonstration of a zero-valent iron (ZVI) permeable reactive barriers (PRB) for the removal of explosives from groundwater. The demonstration was conducted at the Cornhusker Army Ammunition Plant (CAAP) near Grand Island, Nebraska. Performance of the PRB was evaluated by monitoring groundwater concentrations of explosives downgradient of the PRB. Data obtained during the demonstration were used to demonstrate the cost-effectiveness of this approach for ... |
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| Modeling the Response of Primary Production and Sedimentation to Variable Nitrate Loading in the Mississippi River Plume |
06-Mar-2008 |
|
| Authors:
Rebecca E Green; Greg A Breed; Michael J Dagg; Steven E Lohrenz; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Increases in nitrate loading to the Mississippi River watershed during the last 50 years are considered responsible for the increase in hypoxic zone size in Louisiana-Texas shelf bottom waters. There is currently a national mandate to decrease the size of the hypoxic zone to 5000 sq km by 2015, mostly by a 30% reduction in annual nitrogen discharge into the Gulf of Mexico. We developed an ecosystem model for the ... |
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| Demonstration of GSSHA Hydrology at Goodwin Creek Experimental Watershed |
01-Mar-2008 |
10 pages |
| Authors:
Charles W Downer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| The purpose of this System-Wide Water Resources (SWWRP) technical note is to describe the application of the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model at the Goodwin Creek Experimental Watershed (GCEW). The purpose of applying the model at this site was to confirm that the hydrologic portions of the code were working properly and were able to achieve accurate results. Application of GSSHA at this site also allows the current ... |
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| Economic Impacts From Spending by Private Dock Owners at Hartwell Lake |
01-Mar-2008 |
47 pages |
| Authors:
Kathleen Perales; Wen-Huei Chang; Richard Kasul; LiChu Lee; Dennis Propst; Benoni L Amsden; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This report documents the local economic impacts of private dock users at Hartwell Lake, located on the border of Georgia and South Carolina. This economic assessment is based on the results of a 1999 survey of a sample of Hartwell Lake private dock owners. Spending estimates are adjusted to 2004 dollars. The economic impacts estimated for Hartwell Lake are useful for accountability purposes, lake support, and explaining the role of ... |
|
| Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL Contamination in the Subsurface |
Mar-2008 |
72 pages |
| Authors:
Lewis Semprini; Jack Istok; OREGON STATE UNIV CORVALLIS DEPT OF CIVIL CONSTRUCTION AND ENVIRONMENTAL ENGINEERING
|
| Nonaqueous phase liquids (NAPL), including chlorinated solvents, aromatic hydrocarbons, and other volatile organic compounds (VOC), are common contaminants at Department of Defense (DoD) and other federal and non-federal sites. Residual or pooled NAPL contamination provides a long-term source of contamination as it slowly dissolves into groundwater. A major obstacle preventing cost-effective soil and groundwater cleanup at many DoD sites is the current inability to accurately and inexpensively locate and quantify ... |
|
| Edible Oil Barriers for Treatment of Perchlorate Contaminated Groundwater |
Mar-2008 |
80 pages |
| Authors:
Robert C Borden; M T Lieberman; SOLUTIONS INDUSTRIAL AND ENVIRONMENTAL SERVICES RALEIGH NC
|
| This Technical Report Addendum documents longevity and continued effectiveness of emulsified edible oil substrate for remediation of perchlorate and chlorinated solvents in groundwater. The project was funded by the Environmental Security Technology Certification Program (ESTCP; ER-0221). The substrate used for the demonstration was EOS(registered trademark), a commercially available concentrated edible (soybean) oil/nutrient emulsion purchased from EOS Remediation, Inc. of Raleigh, NC. The demonstration was conducted at the Alliant Techsystems, Inc. ... |
|
| Remediation of Explosives in Groundwater Using Zero-Valent Iron In Situ Treatment Wells |
Mar-2008 |
49 pages |
| Authors:
Rick Johnson; Paul Tratnyek; OREGON HEALTH AND SCIENCE UNIV BEAVERTON
|
| This final technical report documents the demonstration of a zero-valent iron (ZVI) in situ treatment well (ISTW) to remove explosives from groundwater. The general purpose of the demonstration was to evaluate the efficacy of ZVI ISTW for treating explosives-contaminated groundwater. |
|
| Analysis of Ballast Water Sampling Port Designs Using Computational Fluid Dynamics |
01-Feb-2008 |
62 pages |
| Authors:
R V Richard; J F Grant; E J Lemieux; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
|
| Analytical methods and computational fluid dynamics are used to describe flow conditions encountered at Naval Research Laboratory's Ballast Water Treatment Test Facility. Design tradeoffs are examined in the engineering of sample ports for collecting biological organisms in water samples, and criteria are provided for sample port installation in shipboard piping systems. Results of this work show that the ideal geometry for biological sampling is from the centerline of a straight, ... |
|
| Ice Considerations in the Design of River Restoration Structures |
01-Feb-2008 |
35 pages |
| Authors:
Andrew M Tuthill; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| Modern river restoration and streambank stabilization projects constructed of natural materials are gaining favor over traditional materials such as riprap and concrete. These new structure types provide a more aesthetic and lower-cost means of controlling bed and bank erosion, while improving flow diversity and habitat. Little design guidance exists for these structures on ice-affected rivers, however. This report provides basic design guidelines for these in-stream structures in the ice environment. ... |
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| Ice Jam at the Rio Blanco Diversion Weir on the White River in Colorado: A Case Study of In-Stream Structures and Ice |
01-Feb-2008 |
34 pages |
| Authors:
Andrew M Tuthill; ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
|
| In-stream structures constructed of natural materials are increasingly popular on US rivers. Examples include rock weirs that provide an aesthetic means of pooling and diverting flow for irrigation and lake filling. Though considerable progress has been made in the design and construction of these soft engineering structures, most applications to date have been on rivers that are unaffected by ice. Recent experience shows that the presence of ice can have ... |
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| Estimation of Upstream Discharge in Data-Deprived Riverine Environments |
01-Jan-2008 |
10 pages |
| Authors:
John E Brown; Cheryl A Blain; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEAN DYNAMICS AND PREDICTION BRANCH
|
| Rivers pose one of the most challenging environments to quantify as they contain elements of both land and water. Their dynamical scales are small in size relative to traditional ocean processes, and are ever-changing in their position and character. To compound the problem, many riverine environments of interest to the U.S. Navy are inaccessible or denied and typically have very little, if any, known information. To address the operational needs ... |
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| Enhancement and Development of Numerical Models for Simulating Coastal Sediment Transport and Morphology Evolution |
01-Jan-2008 |
19 pages |
| Authors:
Hans Hanson; LUND UNIV (SWEDEN) DEPT OF WATER RESOURCES ENGINEERING
|
| The main objectives of the research reported here were: (1) to develop an analytical model of erosion due to wave impact and sediment transport in the overwash; (2) to validate the model with high-quality field data; and (3) to develop methods to employ the model for estimating the statistical properties of morphological response in connection with storms based on long time series of input data on waves and water level. ... |
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| Monitoring of Water and Contaminant Migration at the Groundwater-Surface Water Interface (ER200422). Final Cost and Performance Report |
01-Jan-2008 |
80 pages |
| Authors:
B Chadwick; A Hawkins; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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| The overall objective of this project was to field demonstrate and evaluate the effectiveness of two technologies for characterizing coastal contaminate migration. The specific objectives of this demonstration were to demonstrate (1) that the Trident probe can be used to help delineate areas where groundwater seepage is occurring and Contaminant of Concern concentrations in those areas, (2) that the UltraSeep system can be used to quantify the flow of groundwater ... |
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| A Guide to Alaskan Black Spruce Wetland Bryophytes: Species Specific to Delineation for Interior and South Central Regions |
01-Jan-2008 |
31 pages |
| Authors:
Rodney D Seppelt; Gary A Laursen; Robert W Lichvar; AUSTRALIAN ANTARCTIC DIVISION KINGSTON (TASMANIA)
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| Currently, there is an effort underway to update and revise the U.S. Army Corps of Engineers (Corps) wetland delineation manual (Wakeley 2002) in support of Section 404 of the Clean Water Act (CWA) (33U.S.C.1344). As part of this updating, the United States has been divided into ten subregions. The new subregion boundaries follow an ecosystem-based region classification that has also been used in the development of national hydric soil indicators ... |
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| Application of Hyperspectral Techniques to Monitoring and Management of Invasive Plant Species Infestation |
Jan-2008 |
190 pages |
| Authors:
Susan L Ustin; Edward T Tom; Carlos M Ramirez; Karen S Olmstead; Nina Noujdina; Shawn Kefauver; John Kefauver; Deanne DiPietro; Yen-Ben Cheng; Maragaret E Andrew; Mary Andrews; Emma Underwood; CALIFORNIA UNIV DAVIS
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| This report summarizes and integrates the main findings, using several case studies to illustrate conclusions. Case studies include cheatgrass and Russian knapweed at Yakima Training Center, showing that multiple dates that combine different growing seasons improve map accuracy. Also included are maps for kudzu and Johnson lovegrass at Fort Benning, tamarisk at Yuma Proving Ground and phragmites at Aberdeen Proving Ground. Examples were chosen to illustrate a range of problems ... |
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| Effects of Water Hardness on Spray Droplet Size Under Aerial Application Conditions |
Jan-2008 |
5 pages |
| Authors:
Bradley K Fritz; Wesley C Hoffmann; William E Bagley; Yubin Lan; Daniel E Martin; AGRICULTURAL RESEARCH SERVICE COLLEGE STATION TX
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| Minerals and organic matter in spray carrier water can reduce the effectiveness of some plant protection products. Water hardness has been found to have a significant impact of the efficacy of some crop protection materials and has shown conflicting influence on spray droplet size. The objectives of this study were to determine the effects of water hardness on spray droplet size produced by two commonly-used aerial spray nozzles with and ... |
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Hydrology, Limnology and Potamology
