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Articles 541 - 570 of 983
Full-Text Articles in Physical Sciences and Mathematics
Patterns Of Heavy Metal Concentration In Core Sediments, Wilgreen Lake, Madison County, Clint Mcmaine, Walter S. Borowski
Patterns Of Heavy Metal Concentration In Core Sediments, Wilgreen Lake, Madison County, Clint Mcmaine, Walter S. Borowski
EKU Faculty and Staff Scholarship
Accumulation of heavy metals in ecosystems is a known environmental problem, and several possible industry sources occur within the watershed of Wilgreen Lake, which is fed its two major tributaries, Taylor Fork and Old Town Branch. Elevated levels of cadmium, copper, lead, and nickel were found within the waters of Wilgreen Lake during a preliminary survey in 2007. A possible source of these contaminant occurrences is diffusion from lake sediments, which record past and present activities within their drainage basins.
To obtain a history of anthropogenic practices within the drainage basin, we took 1-meter-long cores of lake sediment in each …
Determination Of Caffeine As A Marker For Septic Tank Contamination Of Wilgreen Lake, Rosemary Onjiko, Susan Godbey, Walter S. Borowski, Darrin Smith, Lori Wilson
Determination Of Caffeine As A Marker For Septic Tank Contamination Of Wilgreen Lake, Rosemary Onjiko, Susan Godbey, Walter S. Borowski, Darrin Smith, Lori Wilson
EKU Faculty and Staff Scholarship
Wilgreen Lake in Richmond, Kentucky, has been listed by both the state and the Environmental Protection Agency as an “impaired” lake due to excess nutrients, which may be in part contributed by domestic septic systems. Caffeine can be used as an anthropogenic marker to estimate the contribution of septic tank effluent to the lake. We have modified existing analytical methods to produce a viable method for the determination of caffeine in environmental water samples and applied the method to water samples collected from Wilgreen Lake. The modified method allows determination of caffeine in a concentration range of 75 to 10,000 …
Human Sanitary Wastes And Waste Treatment In New York City, David J. Tonjes, Christine O'Connell, Omkar Aphale, R. Lawrence Swanson
Human Sanitary Wastes And Waste Treatment In New York City, David J. Tonjes, Christine O'Connell, Omkar Aphale, R. Lawrence Swanson
Technology & Society Faculty Publications
Henry Hudson first sailed toNew Yorkharbor 400 years ago. Since then,New York Cityhas both affected and been affected by water quality in greaterNew YorkHarbor. In this paper, we focus on sewers, sewerage, and sewage treatment inManhattanand their effects on theHudson River. It is clear that feedbacks among drinking water quality and quantity, population, public perceptions, regulations, and estuarine water quality exist, although their strength and character have varied over time. Early land uses damaged local water supplies found on ManhattanIsland. New Yorkthen began to exploit the large fresh water resources available to its north, which helped the City to expand …
Water Quality Retrieval From Landsat Tm Imagery, Arun D. Kulkarni
Water Quality Retrieval From Landsat Tm Imagery, Arun D. Kulkarni
Computer Science Faculty Publications and Presentations
In this paper, the utility of Landsat TM imagery for water quality studies in East Texas is investigated. Remote sensing has an important and effective role in water quality management. Remote sensing satellites measure the amount of solar radiation reflected by surface water and the reflectance of water depend upon the concentration and character of water quality parameters. Three water quality parameters namely the total suspended solids, chlorophyll-a, and turbidity are estimated in this study. In situ water quality parameter measurements from seven ground stations and the corresponding Landsat TM data were used to estimate the water quality parameters. Regression …
Buffernomics: Assessing Willingness To Pay For Lake Conservation On North Pond And East Pond, Sophie D. Sarkar
Buffernomics: Assessing Willingness To Pay For Lake Conservation On North Pond And East Pond, Sophie D. Sarkar
Honors Theses
Hedonic property valuations in Maine have estimated that a one-meter decrease in water clarity can reduce shoreline property values by 4 to 16%. To avoid a loss on their lakefront investment, shoreline property owners have a particularly large incentive to conserve lake water quality. Nevertheless, while some shoreline residents voluntarily install vegetated buffers and actively participate in lake stewardship, others continue to ignore shoreline zoning laws at the expense of lake health. In this thesis, I examine the dichotomy of active and indifferent shoreline residents by analyzing the motivations that distinguish residents who are willing to pay (WTP) for and …
Judy Reservoir Monitoring Project 2009–2010 Final Report, Robin A. Matthews, Joan Vandersypen
Judy Reservoir Monitoring Project 2009–2010 Final Report, Robin A. Matthews, Joan Vandersypen
Judy Reservoir
The purpose of this study was to identify and count the phytoplankton in water samples collected from Judy Reservoir, and measure other standard biological and chemical parameters. Water quality data and algae counts have been collected on a weekly basis since October 2006; annual data summaries were sent to the Skagit Public Utility District No. 1 in 2007, 2008, and January 2010.
Lake Whatcom Bathymetry And Morphology, Robert J. Mitchell, Gerry Gabrisch, Robin A. Matthews
Lake Whatcom Bathymetry And Morphology, Robert J. Mitchell, Gerry Gabrisch, Robin A. Matthews
Lake Whatcom Bathymetry Report
Our objective for this study was to produce an accurate and usable bathymetric model and morphological data for Lake Whatcom to replace that produced by Lighthart et al. (1972). Herein, we summarize the techniques used to convert the 1999 the U. S. Bureau of Reclamation (BOR) hydrographic survey soundings and shoreline contours of Lake Whatcom into metric units and a Triangulated Irregular Network (TIN) bathymetry model. We also describe the procedures used to delineate the major lake basins and to calculate surface area, water volumes, and other morphometric parameters for each basin and the lake as a whole.
Improvement Of Hydraulic And Water Quality Renovation Functions By Intermittent Aeration Of Soil Treatment Areas In Onsite Wastewater Treatment Systems, José A. Amador, David A. Potts, George W. Loomis, David V. Kalen, Erika L. Patenaude, Josef H. Görres
Improvement Of Hydraulic And Water Quality Renovation Functions By Intermittent Aeration Of Soil Treatment Areas In Onsite Wastewater Treatment Systems, José A. Amador, David A. Potts, George W. Loomis, David V. Kalen, Erika L. Patenaude, Josef H. Görres
Natural Resources Science Faculty Publications
We tested intermittent aeration of the soil treatment area (STA) of onsite wastewater treatment systems (OWTS) for its ability to restore and maintain STA hydraulic flow and improve the water quality functions of conventional OWTS. Evaluation was conducted on hydraulically-failed conventional OWTS at three state-owned medical group homes in Washington County, RI, USA. Testing was conducted in two phases, with Phase I (before intermittent soil aeration (ISA)) comprising the first 6 months of the study, and Phase II (during ISA) the remaining 7 months. Intermittent soil aeration restored STA hydraulic function in all three systems despite a marked reduction in …
Heavy Metal Concentrations In Water And Surface Sediments Of Wilgreen Lake, Madison County, Kentucky, Chad Von Gruenigen, Walter S. Borowski
Heavy Metal Concentrations In Water And Surface Sediments Of Wilgreen Lake, Madison County, Kentucky, Chad Von Gruenigen, Walter S. Borowski
EKU Faculty and Staff Scholarship
Heavy metal pollution remains problematic in natural waters, particularly for localities near plausible anthropogenic sources. We assayed the level of heavy metals in surface waters and within surface sediments of Wilgreen Lake, whose watershed drains industrial, urban, agricultural, and residential areas near Richmond, Kentucky. Water samples were treated according to Environmental Protection Agency (EPA) protocols and digested with trace-metal-grade nitric and hydrochloric acids. Sediment samples were collected with a grab sampler and digested using established EPA procedures with hydrogen peroxide and trace-metal-grade nitric acid. Both water samples and sediment samples were sent to Activation Laboratories for analysis, and were measured …
An Application And Refinement Of The Karst Disturbance Index Through Evaluating Variability In Island Karst Disturbance In Puerto Rico, Brandon Lee Porter
An Application And Refinement Of The Karst Disturbance Index Through Evaluating Variability In Island Karst Disturbance In Puerto Rico, Brandon Lee Porter
Masters Theses & Specialist Projects
Karst environments are unique landscapes that contain important resources, including freshwater aquifers and specialized ecosystems, which are easily disturbed due to the interconnected nature of the surface and subsurface. The anthropogenic impacts on karst are deleterious to the ecosystems that are dependent on the karst environment and also to groundwater supplies. The Karst Disturbance Index (KDI) is a holistic tool used to measure anthropogenic impacts associated with karst environments, which has been applied and refined through studies performed in Florida and Italy, yet still remains untested and susceptible to modification for other areas. Application of the KDI in Arecibo, Puerto …
Slides: Water And Development Of Unconventional Oil And Gas Resources, Judy Jordan
Slides: Water And Development Of Unconventional Oil And Gas Resources, Judy Jordan
Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)
Presenter: Judy Jordan, Oil & Gas Liaison, Garfield County, Rifle, CO
21 slides
Heavy Metal Concentrations In Water And Surface Sediments Of Wilgreen Lake, Madison County, Kentucky, Chad Von Gruenigen, Walter S. Borowski
Heavy Metal Concentrations In Water And Surface Sediments Of Wilgreen Lake, Madison County, Kentucky, Chad Von Gruenigen, Walter S. Borowski
EKU Faculty and Staff Scholarship
Heavy metal pollution remains a problem in natural waters, particularly for localities near plausible anthropogenic sources. We assayed the level of heavy metals in surface waters and within surface sediments of Wilgreen Lake, whose watershed drains industrial, urban, and residential areas near Richmond, Kentucky.
Water samples were treated according to Environmental Protection Agency (EPA) protocols and digested with trace-metal-grade nitric and hydrochloric acids. Sediment samples were collected with a grab sampler and digested using established EPA procedures with hydrogen peroxide and trace-metal-grade nitric acid. Both water samples and sediment samples were sent to Activation Laboratories for analysis, and were measured …
Patterns Of Heavy Metal Concentration In Core Sediments, Wilgreen Lake, Madison County, Kentucky, Clint Mcmaine, Walter S. Borowski
Patterns Of Heavy Metal Concentration In Core Sediments, Wilgreen Lake, Madison County, Kentucky, Clint Mcmaine, Walter S. Borowski
EKU Faculty and Staff Scholarship
Elevated levels of cadmium, copper, lead, and nickel were found within the waters of Wilgreen Lake during a preliminary survey in 2007. Accumulation of heavy metals in freshwater systems is a known problem. Heavy metals enter the lake in the dissolved phase or adsorbed onto sediment particles and may be linked to industries within the lake’s watershed. Under certain geochemical conditions such as anoxia, heavy metals may detach from sediment particles and diffuse into overlying lake waters, causing a renewed influx of heavy metals into the ecosystem. We hypothesize that heavy metals should decrease in concentration upcore as a result …
Slides: Intermountain Oil And Gas Bmp Project, Kathryn Mutz
Slides: Intermountain Oil And Gas Bmp Project, Kathryn Mutz
Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)
Presenter: Kathryn Mutz, Natural Resources Law Center, University of Colorado at Boulder
21 slides
Slides: Assessing Opportunities And Barriers To Reducing The Environmental Footprint Of Oil And Gas Development In Utah, Douglas Jackson-Smith, Lorien Belton, Brian Gentry, Gene Theodori
Slides: Assessing Opportunities And Barriers To Reducing The Environmental Footprint Of Oil And Gas Development In Utah, Douglas Jackson-Smith, Lorien Belton, Brian Gentry, Gene Theodori
Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)
Presenter: Dr. Douglas Jackson-Smith, Utah State University--Logan Campus
37 slides
Effects Of Urbanization On Environmental Parameters In Aquatic Systems Along An Urban-Rural Gradient In Northeastern Illinois, Tiffany Garrett
Effects Of Urbanization On Environmental Parameters In Aquatic Systems Along An Urban-Rural Gradient In Northeastern Illinois, Tiffany Garrett
All Capstone Projects
The transformation of landscapes from rural to urban land use impacts affected ecosystems. Replacing natural vegetation with impervious surfaces and introducing environmental stressors through increased human activity can significantly alter aquatic ecosystems. This study examined the effects that urbanization had on salinity, dissolved oxygen, temperature, conductivity, and pH of aquatic systems along an urban-rural gradient in Illinois, Chicago land area- Little Calumet River, Thorn Creek, and Kankakee River. The first objective of this project was to examine whether there were changes or fluctuations among various environmental parameters that may be due to heavily populated residential areas when compared to a …
Results Of The Gulfwatch 2010 Samples : Memorandum, Matthew A. Wood
Results Of The Gulfwatch 2010 Samples : Memorandum, Matthew A. Wood
PREP Reports & Publications
The purpose of this memorandum is to document the sample collection activities for Gulfwatch 2010. .
Effects Of Imperviousness On Family Biotic Index Values In The Southern Appalachian Headwaters And Resulting Extension Education, Jon Calabria
All Dissertations
Clear, cool headwater streams in the mountains of North Carolina are inextricably linked to the surrounding landscape. Trickling perennial streams drain precipitation from their catchment and are capable of sustaining excellent water quality to support rich aquatic biodiversity that feeds and beneficially contributes to the stream network below. However, headwater ecosystems can be easily compromised by even seemingly insignificant anthropogenic impacts. Small headwater streams were not mapped until recently, and are now known to be ubiquitous. Although the NC Mountains contain some of the highest headwater streams densities in the nation, they remain very susceptible to changes in the catchments …
A Case History Of The Science And Management Collaboration In Understanding Hypoxia Events In Long Bay, South Carolina, Usa., Denise Sanger, Debra Hernandez, Susan Libes, George Voulgaris, Braxton Davis, Erik Smith, Rebecca Shufford, Dwayne Porter, Eric Koepfler, Joseph Bennet
A Case History Of The Science And Management Collaboration In Understanding Hypoxia Events In Long Bay, South Carolina, Usa., Denise Sanger, Debra Hernandez, Susan Libes, George Voulgaris, Braxton Davis, Erik Smith, Rebecca Shufford, Dwayne Porter, Eric Koepfler, Joseph Bennet
George Voulgaris
Communication of knowledge between the scientific and management communities is a difficult process complicated by the distinctive nature of professional career goals of scientists and decision-makers. This article provides a case history highlighting a collaboration between the science and management communities that resulted from a response to a 2004 hypoxia, or low dissolved oxygen, event in Long Bay, off Myrtle Beach, South Carolina. A working group of scientists and decision-makers was established at the time of the event and has continued to interact to develop a firm understanding of the drivers responsible for hypoxia formation in Long Bay. Several factors …
Slides: Livestock Grazing On The Public Lands, Joe Feller
Slides: Livestock Grazing On The Public Lands, Joe Feller
The Past, Present, and Future of Our Public Lands: Celebrating the 40th Anniversary of the Public Land Law Review Commission’s Report, One Third of the Nation’s Land (Martz Summer Conference, June 2-4)
Presenter: Joe Feller, Professor of Law, Arizona State University Law School; Visiting Professor, University of Colorado Law School
33 slides
Slides: Grazing On The Public Lands, William G. Myers Iii
Slides: Grazing On The Public Lands, William G. Myers Iii
The Past, Present, and Future of Our Public Lands: Celebrating the 40th Anniversary of the Public Land Law Review Commission’s Report, One Third of the Nation’s Land (Martz Summer Conference, June 2-4)
Presenter: William G. Myers III, Partner, Holland & Hart; former Solicitor of the U.S. Department of the Interior (Boise, ID)
8 slides
Influence Of Clay Mineralogy On Soil Dispersion Behavior And Water Quality, Jessique L. Ghezzi
Influence Of Clay Mineralogy On Soil Dispersion Behavior And Water Quality, Jessique L. Ghezzi
Master's Theses
Currently, there is very little research available on nonpoint source pollution from rural watersheds. Government regulatory agencies are desperate for information regarding the causes of nonpoint source pollution, which includes the relationship between suspended soil particles and dispersion. Since soil dispersion is dependent on clay mineralogy, knowing the clay mineralogy of the soil in an area can help predict sediment loads entering the surrounding surface waters. This information is necessary to protect the resource value of our rivers, lakes, and estuaries, as well as to protect recreational activities such as fishing or hunting; but most importantly, this information is necessary …
Water Quality And Public Health Monitoring Of Surface Waters In The Kura-Araks River Basin Of Armenia, Azerbaijan, And Georgia, Amy Ewing
Water Resources Professional Project Reports
The Kura-Araks (sometimes spelled Aras) River Basin is an international river basin located in the South Caucasus with five separate countries contributing area to the watershed. These countries are Turkey, Iran, Armenia, Georgia, and Azerbaijan. Surface water from the Kura and Araks Rivers is used for a variety of uses, including municipal, agricultural, industrial, and mining, and the waste products from each of these uses are discharged back into the rivers. Many of the resulting contaminants pose significant risks to human health, including exposure to organic pollution derived from municipal use, organochlorine pesticides and high nitrate from agriculture, chemical contamination …
Minimun Riparian Buffer Width For Maintaining Water Quality And Habitat Along Stevens Creek, Sammi Bray
Minimun Riparian Buffer Width For Maintaining Water Quality And Habitat Along Stevens Creek, Sammi Bray
Department of Environmental Studies: Undergraduate Student Theses
ABSTRACT Riparian buffer zones are important sites of biodiversity, sediment trapping, pollutant removal, and hydrologic regulation that have significant implications for both people and wildlife. Urbanization’s influence on and need for adequate water quality increases the need for careful planning in regards to riparian areas. Wildlife are key components in the ecosystem functions of riparian zones and require consideration in peri-urban planning as well. This study reviews relevant literature to determine the recommended minimum riparian buffer width for maintaining water quality and habitat along Stevens Creek in Lincoln, Nebraska. Only sources that listed a specific purpose related to water quality …
Lake Samish Water Monitoring Project 2010 Final Report, Robin A. Matthews, Joan Vandersypen
Lake Samish Water Monitoring Project 2010 Final Report, Robin A. Matthews, Joan Vandersypen
Lake Samish
This report describes work done as a continuation of the Lake Samish monitoring project started in June 2005. Additional data and lake information is available in the 2006–2008 final reports (Matthews, et al., 2006; Matthews and Vandersypen, 2007; Matthews and Vandersypen, 2008).
Lake Samish is a valuable aquatic resource, providing public access for boating, fishing, swimming, picnicking, and other water and lakeshore activities. Residents around the lake enjoy outstanding views of both the lake and its surrounding watershed, and the lake serves as a water supply for many of the lakeshore residents.
Lake Samish is located in the Washington State …
Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez
Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez
US-Mexico Negotiations on Improved Colorado River Management: An Update (February 19)
Presenter: Mario López, Engineering and Technical Standards Manager, National Water Commission of México
53 slides
Slides: Costs And Benefits Of Oil Shale Development, James T. Bartis
Slides: Costs And Benefits Of Oil Shale Development, James T. Bartis
The Promise and Peril of Oil Shale Development (February 5)
Presenter: James T. Bartis, Senior Policy Researcher, Rand Corporation
21 slides
Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak
Slides: Impacts Of Oil Shale On Carbon Emissions, Jeremy Boak
The Promise and Peril of Oil Shale Development (February 5)
Presenter: Dr. Jeremy Boak, Center for Oil Shale Technology & Research, Colorado School of Mines
43 slides
Water Management Plan For The Town Of Pingelly, Mark Pridham
Water Management Plan For The Town Of Pingelly, Mark Pridham
Resource management technical reports
No abstract provided.
Judy Reservoir Monitoring Project 2010 Final Report, Robin A. Matthews, Joan Vandersypen, Rachael D. (Rachael Dawn) Gravon, Jessie Rosanbalm
Judy Reservoir Monitoring Project 2010 Final Report, Robin A. Matthews, Joan Vandersypen, Rachael D. (Rachael Dawn) Gravon, Jessie Rosanbalm
Judy Reservoir
The purpose of this study was to identify and count the phytoplankton in water samples collected from Judy Reservoir, and measure other standard biological and chemical parameters. Water quality data and algae counts have been collected on a weekly basis since October 2006; annual data summaries were sent to the Skagit Public Utility District No. 1 in 2007 and 2008.
(rev. Feb 18, 2010)