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Articles 511 - 540 of 905
Full-Text Articles in Physical Sciences and Mathematics
Creating Lakes From Open Pit Mines: Processes And Considerations, Emphasis On Northern Environments, Christopher H. Gammons, Les N. Harris, James M. Castro, Peter A. Cott, Bruce W. Hanna
Creating Lakes From Open Pit Mines: Processes And Considerations, Emphasis On Northern Environments, Christopher H. Gammons, Les N. Harris, James M. Castro, Peter A. Cott, Bruce W. Hanna
Geological Engineering
Creating Lakes from Open Pit Mines: Processes and Considerations, Emphasis on Northern Environments. This document summarizes the literature of mining pit lakes (through 2007), with a particular focus on issues that are likely to be of special relevance to the creation and management of pit lakes in northern climates. Pit lakes are simply waterbodies formed by filling the open pit left upon the completion of mining operations with water. Like natural lakes, mining pit lakes display a huge diversity in each of these subject areas. However, pit lakes are young and therefore are typically in a non-equilibrium state with respect …
Setting Targets For Resource Condition In Doradine Catchment, Leon Van Wyk, Gregory Paul Raper
Setting Targets For Resource Condition In Doradine Catchment, Leon Van Wyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Peter Nichols, General Counsel of the Lower Arkansas Valley “Super Ditch” Company, Trout, Raley, Montano, Witwer & Freeman PC, Colorado
33 slides
Watershed Condition Assessment For Little River Canyon National Preserve, Alabama, Nathan Demille Rinehart
Watershed Condition Assessment For Little River Canyon National Preserve, Alabama, Nathan Demille Rinehart
Masters Theses & Specialist Projects
No abstract provided.
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2007, Daniel M. Dauer, Harold G. Marshal, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Frederick A. Hoffman
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2007, Daniel M. Dauer, Harold G. Marshal, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Frederick A. Hoffman
Status and Trends for Virginia Chesapeake Bay
The period prior to the implementation of the Chesapeake Bay Monitoring Program was characterized by a marked decline in the water quality of the Chesapeake Bay. The disappearance of submerged aquatic vegetation in certain regions of the Bay, declines in the abundance of some commercially and recreationally important species, increases in the incidence of low dissolved oxygen events, changes in the Bay's food web, and other ecological problems were related to deteriorating water quality (e.g. USEPA, 1982,1983;Officer et al.,1984; Orth and Moore, 1984). The results of concentrated research efforts in the late 1970s and early 1980s stimulated the establishment of …
Mesoscale Dispersive Flux In The Lower Reaches Of The Elizabeth River Estuary, Byron Danrich Tracy
Mesoscale Dispersive Flux In The Lower Reaches Of The Elizabeth River Estuary, Byron Danrich Tracy
Civil & Environmental Engineering Theses & Dissertations
Congress has mandated under Section 303(d) of the Clean Water Act that Total Maximum Daily Loads (TMDL's) be established for impaired water bodies to further identify and regulate their waste assimilative capacity. To establish a TMDL, the sources of waste loading or pollutants must be identified, and a method of determining how each should be limited or removed must be developed. Using a water quality model is a typical method for determining these limits, and since new or changed limits will likely impact local businesses and government budgets, the model must be accurate. For most tidal systems larger than small …
Bridging The Governance Gap: Strategies To Integrate Water And Land Use Planning, Sarah Bates Van De Wetering, University Of Montana (Missoula). Public Policy Research Institute
Bridging The Governance Gap: Strategies To Integrate Water And Land Use Planning, Sarah Bates Van De Wetering, University Of Montana (Missoula). Public Policy Research Institute
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
16 pages.
Includes bibliographical references
"2007"
"Collaborative Governance Report 2"
Slides: Linking Growth, Land Use And Water, Jim Holway
Slides: Linking Growth, Land Use And Water, Jim Holway
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Jim Holway, Global Institute of Sustainability, Civil and Environmental Engineering, Arizona Water Institute, Arizona State University
29 slides
Slides: Beyond Rethinking: Redoing Western Water Law, Janet Neuman
Slides: Beyond Rethinking: Redoing Western Water Law, Janet Neuman
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Professor Janet Neuman, Lewis & Clark Law School
17 slides
Rethinking Western Water Law: Instream Flows, Reed D. Benson
Rethinking Western Water Law: Instream Flows, Reed D. Benson
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Reed D. Benson, University of New Mexico School of Law
1 page.
Slides: Water Needs And Strategies For A Sustainable Future, Shaun Mcgrath
Slides: Water Needs And Strategies For A Sustainable Future, Shaun Mcgrath
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Shaun McGrath, Program Director, Western Governors’ Association
25 slides
Sustainable Water Policies In The Rocky Mountain West: An Action Agenda, Sarah Bates
Sustainable Water Policies In The Rocky Mountain West: An Action Agenda, Sarah Bates
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Sarah Bates, Western Progress
10 pages.
Includes bibliographical references
"Review Draft, May 15, 2008"
Slides: Energy Production And The West's Wild Places, Amy Mall
Slides: Energy Production And The West's Wild Places, Amy Mall
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Amy Mall, Senior Policy Analyst, Natural Resources Defense Council
28 slides
Population Dynamics Of Freshwater Invertebrates In Beltrami County, Amanda Johnson
Population Dynamics Of Freshwater Invertebrates In Beltrami County, Amanda Johnson
Honors Capstones
Capstone submitted as a graduate requirement for the BSU Honors Program.
A Comparison Of Agricultural And Urban Influences On Water Quality In South West Wa, Nardia Keipert, David Weaver, Robert Summers, Christian Zammit, Artemis Kitsios, Simon Neville, Martin Clarke
A Comparison Of Agricultural And Urban Influences On Water Quality In South West Wa, Nardia Keipert, David Weaver, Robert Summers, Christian Zammit, Artemis Kitsios, Simon Neville, Martin Clarke
Conference papers and presentations
In Western Australia, a number of coastal rivers and estuaries have suffered from eutrophication since the 1960’s. Often the focus of the threat to water quality in these areas has been agriculture because of its extensive nature and widespread use of highly soluble fertilisers. Over recent years a focus on nutrient inputs, outputs and nutrient balance in a number of projects provides an opportunity to compare the relative nutrient threats from the agricultural and urban sectors, placed in the context of increasing urbanisation and development. These disparate data sets also allow a comparison of nutrient inputs in each sector in …
Using E. Coli And Bacteroides Distribution And Abundance In A Eutrophic Lake As A Tracer For Nutrient Inputs, Wilgreen Lake, Madison County, Kentucky, Theresa A. Aguiar, Walter S. Borowski, Alice C. Layton, Larry Mckay
Using E. Coli And Bacteroides Distribution And Abundance In A Eutrophic Lake As A Tracer For Nutrient Inputs, Wilgreen Lake, Madison County, Kentucky, Theresa A. Aguiar, Walter S. Borowski, Alice C. Layton, Larry Mckay
EKU Faculty and Staff Scholarship
Wilgreen Lake is a eutrophic lake that has been listed on the EPA’s 303d list as nutrient impaired. Potential sources of this impairment are likely from humans, cattle manure, and fertilizers. We suspect that the majority of nutrients originate from human sources, namely from septic tank effluent emanating from key housing developments ringing the lakeshore. We test our hypothesis with conventional microbial assays (Escherichia coli) and RT-PCR techniques (Bacteroides).
We took water samples at 19 sampling locations on 4 occasions, and measured the abundance of Escherichia coli using IDEXX methods. Corresponding sub-samples slated for potential PCR …
A Watershed Analysis Of Pattee Pond: Implications For Water Quality And Land Use Management, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
A Watershed Analysis Of Pattee Pond: Implications For Water Quality And Land Use Management, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Pattee Pond (2008, 1992)
The Colby Environmental Assessment Team (CEAT) investigated the impact of land use patterns on the water quality of Pattee Pond in Winslow, Maine, during the summer and fall of 2008. Physical, chemical, and biological characteristics of water quality were analyzed to evaluate the current health of the lake. Data collected were compared with previous studies conducted by the Maine Department of Environmental Protection (DEP) and CEAT to examine changes in water quality and land use over time. Trends in Pattee Pond water quality suggest an improvement since the 1970s. However, the lake is still experiencing algal blooms resulting from phosphorus …
Assessment Of Water Quality Trends In The North Fork Of Kentucky River Basin: Focus On Pathogen Impairment, Kentucky Water Resources Research Institute
Assessment Of Water Quality Trends In The North Fork Of Kentucky River Basin: Focus On Pathogen Impairment, Kentucky Water Resources Research Institute
KWRRI Research Reports
This project consisted of analyzing existing water quality data for streams in the Upper Forks of Kentucky River Basin, with a particular focus on pathogen trends. According to the most recent 303(d) list of Kentucky waters, the majority of streams assessed in the Upper Forks of Kentucky River Basin are impaired for primary recreational contact as a result of pathogens. The state pathogen standard for primary contact recreation is expressed in a dual form which specifies that the 30-day geometric mean of fecal coliform counts not exceed 200 colonies per 100 mL (on a minimum of five samples) and not …
Phosphorus Primer For Maine’S Lakes, Lindsay B. Philips
Phosphorus Primer For Maine’S Lakes, Lindsay B. Philips
Honors Theses
Phosphorus plays a major role in aquatic systems and the life that they support. It is a macronutrient that constitutes 0.5lf microorganisms and zooplankton by mass. Phosphorus is of great importance in terrestrial, agricultural, and plant systems as a macronutrient, and when it comes to aquatic systems, we tend to look at phosphorus in terms of its influence on lake primary productivity. Lakes are often phosphorus sinks because they are maintained by hydrological sources that are capable of causing nutrient influx. To understand phosphorus cycling in lake systems, it is important to consider the many sources and forms of phosphorus …
Using Combined Prediction Models To Quantify And Visualize Stormwater Runoff In An Urban Watershed, Keshia Koehn, Cristina Scarlat, Kristofor Brye
Using Combined Prediction Models To Quantify And Visualize Stormwater Runoff In An Urban Watershed, Keshia Koehn, Cristina Scarlat, Kristofor Brye
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Stormwater runoff can transport nutrients, sediments, chemicals, and pathogens to surface waterbodies. Managing runoff is crucial to preserving water quality in rapidly developing urban watersheds like those in Northwest Arkansas. A watershed containing the majority of the University of Arkansas campus was designated as the study area because stormwater from it drains into the West Fork of the White River, designated as an impaired waterbody due to siltation. The project objective was to develop methodology to test existing stormwater drainage infrastructure, identify potential areas of improvement, and estimate potentially contaminated runoff by combining two widely used prediction models. The U.S. …
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2006, Daniel M. Dauer, Harold G. Marshall, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Frederick A. Hoffman
Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2006, Daniel M. Dauer, Harold G. Marshall, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Frederick A. Hoffman
Status and Trends for Virginia Chesapeake Bay
The period prior to the implementation of the Chesapeake Bay Monitoring Program was characterized by a marked decline in the water quality of the Chesapeake Bay. The disappearance of submerged aquatic vegetation in certain regions of the Bay, declines in the abundance of some commercially and recreationally important species, increases in the incidence of low dissolved oxygen events, changes in the Bay's food web, and other ecological problems have been related to the deteriorating water quality (e.g. USEPA, 1982,1983;Officer et al.,1984; Orth and Moore, 1984). The results of concentrated research efforts in the late 1970s and early 1980s stimulated the …
Land Use And Water Quality Characterization Of Boeuf Basin, La, Joseph Wesley Leblanc
Land Use And Water Quality Characterization Of Boeuf Basin, La, Joseph Wesley Leblanc
LSU Master's Theses
The three primary goals of this project were to establish the ambient background of water quality in the Lake Boeuf basin in southeast Louisiana; establish land use patterns in the basin and the relation to water quality; and develop a preliminary plan to improve water quality through the use of best management practices and wetland assimilation. Urban and agricultural acreage borders the basin and runoff from these lands forces loadings of nutrients into the adjacent canals where they become channelized and ultimately exit the Boeuf Basin into Lac des Allemandes. From September 2007 until February 2008, water sampling occurred monthly …
A Century Of Land Use And Water Quality In Watersheds Of The Continental U.S., Whitney P. Broussard Iii
A Century Of Land Use And Water Quality In Watersheds Of The Continental U.S., Whitney P. Broussard Iii
LSU Doctoral Dissertations
Human endeavors, particularly the agricultural and industrial activities of the last half century, now produce more biologically available nitrogen (N) than all other natural sources combined. The increased N availability can have consequences for the health of aquatic biota on the local, regional, and global scales. One manifestation of this problem is the formation of coastal hypoxic zones where terrestrial N loading creates eutrophic conditions in coastal waters. This dissertation examines a century of changes in land use and water quality to quantify the relationships between agricultural land use practices and riverine N yields in the Mississippi River Basin and …
Fecal Microbe Distribution And Abundance Used As A Possible Proxy For Nutrient Source Identification In Eutrophic Wilgreen Lake, Madison County, Kentucky, Theresa A. Aguiar, Walter S. Borowski
Fecal Microbe Distribution And Abundance Used As A Possible Proxy For Nutrient Source Identification In Eutrophic Wilgreen Lake, Madison County, Kentucky, Theresa A. Aguiar, Walter S. Borowski
EKU Faculty and Staff Scholarship
Wilgreen Lake is a eutrophic lake that has been listed on the EPA’s 303d list as nutrient impaired. Potential sources of this impairment are from humans, cattle manure and fertilizers. We suspect that the majority of nutrients originate from human sources. As a possible proxy for nutrient input, we test our hypothesis by examining fecal microbe distribution and abundance in the lake.
We took water samples at 19 sampling locations on 4 occasions. Sampling spanned 26 June to 15 August with the last 3 sampling events occurring at roughly two-week intervals. These samples were then processed using IDEXX methods, which …
A Decade Of Colorado Supreme Court Water Decisions, 1996-2006: Special Report, Colorado Foundation For Water Education
A Decade Of Colorado Supreme Court Water Decisions, 1996-2006: Special Report, Colorado Foundation For Water Education
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
Presenter: Justice Greg Hobbs, Colorado Supreme Court
31 pages.
Includes color illustrations and map
"Acknowledgments: This special report highlights important features of Colorado Supreme Court water decisions handed down between 1996 and 2006. It contains excerpts from opinions authored by Justices Lohr, Vollack, Mullarkey, Kourlis, Hobbs, Martinez, Bender, Rice, Coats and Eid. It is adapted from an article that first appeared in The Water Report (www.thewaterreport.com), February 15, 2007, used with permission."
Slides: A Case Study Of The Roan Plateau Area, Mary Viviano
Slides: A Case Study Of The Roan Plateau Area, Mary Viviano
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
Presenter: Mary Viviano, EnCana Oil & Gas (USA) Inc.
14 slides
Slides: Summary: Sources Of Stress And The Changing Context Of Natural Resources Law And Policy In The New West, William R. Travis
Slides: Summary: Sources Of Stress And The Changing Context Of Natural Resources Law And Policy In The New West, William R. Travis
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
Presenter: Dr. William R. Travis, Department of Geography, University of Colorado at Boulder
43 slides
Some Preliminary Thoughts On Contrasts And Convergence In Environmental And Natural Resources Law, Karin P. Sheldon
Some Preliminary Thoughts On Contrasts And Convergence In Environmental And Natural Resources Law, Karin P. Sheldon
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
16 pages.
Includes bibliographical references
Case Studies Of Urban And Rural Lakes In Minnesota, Lisa M. Becker
Case Studies Of Urban And Rural Lakes In Minnesota, Lisa M. Becker
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.
Quantifying Hydrologic Fluxes To A Small Impounded Piedmont Lake, Greenville, South Carolina, Cameron Moore
Quantifying Hydrologic Fluxes To A Small Impounded Piedmont Lake, Greenville, South Carolina, Cameron Moore
Furman Lake Restoration Book Gallery
A presentation with text, charts, and images showing research gathered over a three month period in 2007 measuring the water flowing into and out of the Furman Lake. The research is pertinent to the Furman Lake Restoration Project as it will help assess the condition of the lake and plan for the future.