Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Natural Resources Management and Policy (24)
- Social and Behavioral Sciences (24)
- Earth Sciences (22)
- Oceanography and Atmospheric Sciences and Meteorology (21)
- Environmental Monitoring (19)
-
- Fresh Water Studies (19)
- Life Sciences (19)
- Hydrology (14)
- Natural Resources and Conservation (13)
- Soil Science (10)
- Agriculture (9)
- Civil and Environmental Engineering (9)
- Engineering (9)
- Environmental Indicators and Impact Assessment (9)
- Environmental Health and Protection (8)
- Public Affairs, Public Policy and Public Administration (8)
- Sustainability (8)
- Environmental Engineering (6)
- Law (6)
- Communication (5)
- Environmental Studies (5)
- Plant Sciences (5)
- Urban Studies and Planning (5)
- Architecture (4)
- Arts and Humanities (4)
- Critical and Cultural Studies (4)
- Environmental Design (4)
- Institution
-
- University of Nebraska - Lincoln (17)
- Department of Primary Industries and Regional Development, Western Australia (10)
- Old Dominion University (10)
- University of Arkansas, Fayetteville (10)
- Air Force Institute of Technology (6)
-
- Bridgewater State University (6)
- University of Colorado Law School (6)
- Utah State University (5)
- University of Kentucky (4)
- University of Southern Maine (4)
- Portland State University (3)
- United Arab Emirates University (2)
- University of Nevada, Las Vegas (2)
- Western Kentucky University (2)
- Cleveland State University (1)
- Columbus State University (1)
- Edith Cowan University (1)
- Indiana State University (1)
- Marshall University (1)
- Munster Technological University (1)
- Stephen F. Austin State University (1)
- University of Massachusetts Boston (1)
- University of New Mexico (1)
- Wilfrid Laurier University (1)
- Keyword
-
- Natural resources (8)
- Western Australia (8)
- Natural resource management (6)
- Salinity (6)
- Taunton River (6)
-
- Water conservation projects (6)
- Arkansas (5)
- Orthophotomaps (5)
- Phosphorus (5)
- Water quality (5)
- Water quality sampling (5)
- Hydrology (4)
- Land use (4)
- NEEFC (4)
- Soil degradation (4)
- 1. Articles - Liquid (3)
- Conservation (3)
- Development (3)
- Groundwater (3)
- New England (3)
- Remnant vegetation (3)
- Risk assessment (3)
- Smart growth (3)
- Soil (3)
- United States (3)
- Water erosion (3)
- Water monitoring (3)
- Wind erosion (3)
- 2. Articles - Ice (2)
- 3. Articles - Vapor (2)
- Publication
-
- Reconstruction: Studies in Contemporary Culture (10)
- Nebraska Water Center: Faculty Publications (8)
- Arkansas Water Resources Center Technical Reports (7)
- Resource management technical reports (7)
- Theses and Dissertations (7)
-
- Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9) (5)
- Maps (5)
- Water Current Newsletter (4)
- Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences (3)
- Planning (3)
- Theses (3)
- Daugherty Water for Food Global Institute: Faculty Publications (2)
- Kentucky River Watershed Watch (2)
- Library Faculty & Staff Publications (2)
- Masters Theses & Specialist Projects (2)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1)
- All Maxine Goodman Levin School of Urban Affairs Publications (1)
- All other publications (1)
- All-Inclusive List of Electronic Theses and Dissertations (1)
- Books, Reports, and Studies (1)
- Bulletins 4000 - (1)
- Center for Advanced Land Management Information Technologies: Publications (1)
- Center for Lakes and Reservoirs Publications and Presentations (1)
- Civil and Environmental Engineering Faculty Publications and Presentations (1)
- Civil and Environmental Engineering and Construction Faculty Research (1)
- Environmental Science and Management Professional Master's Project Reports (1)
- Environmental, Earth, and Ocean Sciences Faculty Publication Series (1)
- Faculty Publications (1)
- Great Plains Research: A Journal of Natural and Social Sciences (through 2013) (1)
- Horticulture research reports (1)
- Publication Type
- File Type
Articles 31 - 60 of 97
Full-Text Articles in Water Resource Management
Slides: Summary—The California Perspective And California Perspective: Climate Change And Water Resources, Jeanine Jones
Slides: Summary—The California Perspective And California Perspective: Climate Change And Water Resources, Jeanine Jones
Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)
Presenter: Jeanine Jones, California Department of Water Resources.
2 pages and 16 slides.
Agenda: Climate Change And The Future Of The American West: Exploring The Legal And Policy Dimensions, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Climate Change And The Future Of The American West: Exploring The Legal And Policy Dimensions, University Of Colorado Boulder. Natural Resources Law Center
Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)
Sponsors: The William and Flora Hewlett Foundation; BP America; Holland & Hart; Patrick, Miller & Krope, P.C.; The Rocky Mountain Mineral Law Foundation, Rocky Mountain Natural Resource Center of the National Wildlife Federation, Western Water Assessment.
Exploring the legal and political dimensions that climate change will bring to the American West will be the focus of the CU-Boulder Natural Resources Law Center's 27th Annual Summer Conference.
Titled "Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions," the conference will be held June 7-9 at the Fleming Law Building on the University of Colorado at …
Slides: Climate Change And Water Resources And Risa Regional Integrated Sciences And Assessments: Building Bridges Between Climate Sciences And Society, Brad Udall
Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)
Presenter: Brad Udall, Executive Director, CIRES Western Water Assessment.
31 slides.
Slides: Impacts Of Climate Change On Municipal Water Supplies: A Time For Action, Richard Palmer
Slides: Impacts Of Climate Change On Municipal Water Supplies: A Time For Action, Richard Palmer
Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)
Presenter: Richard Palmer, Professor and Director, Water Resources Management and Drought Planning Group, University of Washington.
48 slides.
2005 Nutrient And Sediment Monitoring Report Kings River Near Berryville, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
2005 Nutrient And Sediment Monitoring Report Kings River Near Berryville, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Arkansas Water Resources Center Technical Reports
An automatic sampler and a USGS gauging station were established in 1998 and water quality sampling was begun in 1999 on the Kings River near Berryville, Arkansas. Continuous stage and discharge measurements and frequent water quality sampling have been used to determine pollutant concentrations and loads in the river. This report presents the results from the sampling and analysis for January 1, 2005 to December 31, 2005.
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Arkansas Water Resources Center Technical Reports
A water quality sampling station was installed at the Washington County road 195 bridge on the West Fork of the White River just above the confluence of the three main forks of the Upper White River in December 2001. The Quality Assurance Project Plan (QAPP) was approved by EPA Region six on March 2002 and sampling was begun at that time. This station is coordinated with a USGS gauging station at the same location. This station was instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus into …
2005 Nutrient And Sediment Monitoring Report Ballard Creek Near Arkansas/Oklahoma Line, Marc Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle, Marty Matlock
2005 Nutrient And Sediment Monitoring Report Ballard Creek Near Arkansas/Oklahoma Line, Marc Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle, Marty Matlock
Arkansas Water Resources Center Technical Reports
The Illinois River Basin has experienced water quality impairment from non-point source pollution for many years. This fact was well documented in the State of Arkansas' Water Quality Assessment report, the Soil Conservation Service River Basin Study, and several University of Arkansas studies. Thirty-seven sub-watersheds have been identified by the SCS in the Arkansas portion of the Illinois River basin. In the Arkansas portion of the Basin, the Illinois River, Evansville Creek, Baron Fork, Cincinnati Creek, Muddy Fork, Moores Creek, Clear Creek, Osage Creek and Flint Creek were all classified as not supporting their designated use as primary contact recreation …
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The L'Anguille River Near Palestine 2005 Annual Report, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana, R. Davis, K. Steele
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The L'Anguille River Near Palestine 2005 Annual Report, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana, R. Davis, K. Steele
Arkansas Water Resources Center Technical Reports
A water quality sampling station was installed at the L’Anguille River near Palestine in 2003. This station is coordinated with a USGS gauging station at the same location. This station is instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus in the River. The L’Anguille River was listed on Arkansas' 1998 (listed in later reports?) 303d list as impaired from sediment (turbidity). The L’Anguille River was the second stream to have total maximum daily loads (TMDL) determined in Arkansas. Accurate determination of stream nutrients and sediment is …
Water Quality Sampling, Analysis And Annual Load Determinations For Nutrients And Sediment At The Arkansas Highway 45 Bridge On The White River Just Above Beaver Lake, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana
Water Quality Sampling, Analysis And Annual Load Determinations For Nutrients And Sediment At The Arkansas Highway 45 Bridge On The White River Just Above Beaver Lake, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana
Arkansas Water Resources Center Technical Reports
Automatic water sampler and a U. S. Geological Survey gauging station were established in 1995 on the main stem of the Illinois River at the Arkansas Highway 59 Bridge. Since that time, continuous stage and discharge measurements and water quality sampling have been used to determine pollutant concentrations and loads in the Arkansas portion of the Illinois River. This report represents the results from the measurement and sampling by the Arkansas Water Resources Center -Water Quality Lab for January 1, 2005 to December 31, 2005.
Lockhart Catchment Appraisal 2005, Susan Murphy-White, P Leoni
Lockhart Catchment Appraisal 2005, Susan Murphy-White, P Leoni
Resource management technical reports
The Lockhart Catchment is the largest subcatchment of the Avon River Basin covering just over 3.56 million hectares, including 15 Shires running from Quairading and Bruce Rock in the north to Pingrup and Lake King in the south. This document aims to give the reader a starting point from which to further assess larger scale areas of the catchment for the purpose of planning to reverse and improve land degradation and sustainable farming in Western Australia.
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus In The Bayou Bartholomew At Garrett Bridge, Arkansas And Near Portland, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis, K. Steele
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus In The Bayou Bartholomew At Garrett Bridge, Arkansas And Near Portland, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis, K. Steele
Arkansas Water Resources Center Technical Reports
Water quality sampling stations were installed at the Bayou Bartholomew at Garrett Bridge, AR and near Portland, AR. These stations are coordinated with USGS gauging stations at the same locations. These stations are instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus in the River. Bayou Bartholomew watershed is about 437,000 hectares and is located in the south east corner of the state. The land use in the watershed is mostly in forest and cropland agriculture with some urban area. High turbidity levels and excessive silt loads …
Illinois River 2005 Pollutant Loads At Arkansas Highway 59 Bridge, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle
Illinois River 2005 Pollutant Loads At Arkansas Highway 59 Bridge, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle
Arkansas Water Resources Center Technical Reports
Automatic water sampler and a U. S. Geological Survey gauging station were established in 1995 on the main stem of the Illinois River at the Arkansas Highway 59 Bridge. Since that time, continuous stage and discharge measurements and water quality sampling have been used to determine pollutant concentrations and loads in the Arkansas portion of the Illinois River. This report represents the results from the measurement and sampling by the Arkansas Water Resources Center -Water Quality Lab for January 1, 2005 to December 31, 2005.
Human Development And Resources Use In The Coastal Zone: Influences On Human Health, Robert E. Bowen, Anamarija Frankic, Mary E. Davis
Human Development And Resources Use In The Coastal Zone: Influences On Human Health, Robert E. Bowen, Anamarija Frankic, Mary E. Davis
Environmental, Earth, and Ocean Sciences Faculty Publication Series
Coastal watersheds and nearshore marine areas are the most valuable and dynamic places on Earth. Human population growth is great in these regions, which are home to some of the most sensitive habitats in the world. Coastal areas provide more than half of the overall service value derived from the global environment (Costanza et al., 1997). Natural (e.g., hurricanes and tsunamis) and human pressures on this environment require it to constantly adjust. More than any other area, the global coast has defined the progress of human culture and continues to be a singular influence in how humans connect to the …
A Multimetric Benthic Index For Georgia's Wadeable Streams, Amanda Lynn Middleton
A Multimetric Benthic Index For Georgia's Wadeable Streams, Amanda Lynn Middleton
Theses and Dissertations
Using an ecoregional approach, multimetric indices were developed to describe stream condition in each geographically distinct region of Georgia. Collected from predetermined reference and impaired condition streams, macroinvertebrate data were used to develop multimetric indices. Multimetric indices identified a range of stream conditions, as well as, the overall health of aquatic ecosystems. Based on multimetric indices, the Multimetric Rating System grouped streams according to overall stream condition. The Multimetric Rating System used multiple indices to describe various facets of stream condition. Therefore, it may be concluded that the Multimetric Rating System is a robust water management tool that may be …
Evaluation Of Microbial Diversity In Wetland Through Polymerase Chain Reaction (Pcr) And Restriction Fragment Length Polymorphism (Rflp), Gregory K. Joseph
Evaluation Of Microbial Diversity In Wetland Through Polymerase Chain Reaction (Pcr) And Restriction Fragment Length Polymorphism (Rflp), Gregory K. Joseph
Theses and Dissertations
The diversity of microbial communities in wetlands has not been fully measured. These communities may offer tools to naturally remediate sites polluted with chlorinated compounds. Polmerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP) are genomic techniques that are capable of rapidly characterizing bacteria communities and can provide valuable information about the diversity of microbial communities.
Modeling And Optimization Of Biological Nutrients Removal In Wastewater Treatment Processes Considering Advanced Kinetic Modeling Techniques, Nawras Nabil Ai Ghazaly
Modeling And Optimization Of Biological Nutrients Removal In Wastewater Treatment Processes Considering Advanced Kinetic Modeling Techniques, Nawras Nabil Ai Ghazaly
Theses
In the field of wastewater treatment, there is an increasing demand to improve the effluent
quality especially if it is going to be discharged to surface water. Effluent discharged
to surface water should have minimum nutrients level (nitrogen and phosphorus) in order
to avoid eutrophication and the resulting algal blooms which deplete the water from the oxygen
needed by other plant and animal species. Moreover, there is a demand to reduce the chemical
consumption in the treatment processes and to depend as much as we can on the biological
Treatment methods in achieving the required effluent quality in terms of …
Molecular Characterization Of Wetland Soil Bacterial Community In Constructed Mesocosms, Ethan C. Bishop
Molecular Characterization Of Wetland Soil Bacterial Community In Constructed Mesocosms, Ethan C. Bishop
Theses and Dissertations
The use of wetlands to effectively remediate aquifers contaminated with chlorinated solvents is an emerging technique, which shows high promise. In order to better understand this process and test its legitimacy, a treatment wetland was constructed at Wright-Patterson AFB, Dayton, Ohio and, in a joint effort with Wright State University (WSU), has previously shown the effective removal of PCE. The purpose of this research was to characterize the soil bacterial community, pre-PCE injection, among three wetland plant species from the sedge family (Cyperaceae) within constructed wetland mesocosms and to identify any bacterial dominance. Carex comosa, Scirpus atrovirens, and Eleocharis erythropoda …
On The Spatial Nature Of The Groundwater Pumping Externality, Nicholas Brozovic, David L. Sunding, David Zilberman
On The Spatial Nature Of The Groundwater Pumping Externality, Nicholas Brozovic, David L. Sunding, David Zilberman
Daugherty Water for Food Global Institute: Faculty Publications
Most existing economic analyses of optimal groundwater management use single-cell aquifer models, which assume that an aquifer responds uniformly and instantly to ground- water pumping. This paper demonstrates how spatially explicit aquifer response equations from the water resources engineering literature may be embedded in a general economic framework. Calibration of our theoretical model to published economic studies of spe- cific aquifers demonstrates that, by averaging basin drawdown across the entire resource, existing studies generally understate the magnitude of the groundwater pumping external- ity relative to spatially explicit models. For the aquifers studied, the drawdown predicted by single- cell models may …
Micro-Structural And Phase Configuration Effects Determining Water Content: Dielectric Relationships Of Aggregated Porous Media, J. M. Blonquist, Jr., Scott B. Jones, I. Lebron, D. A. Robinson
Micro-Structural And Phase Configuration Effects Determining Water Content: Dielectric Relationships Of Aggregated Porous Media, J. M. Blonquist, Jr., Scott B. Jones, I. Lebron, D. A. Robinson
Plants, Soils, and Climate Faculty Publications
Many porous media in which we determine water content are aggregated and characterized by a dual-porosity pore network, composed of interaggregate pores and intra-aggregate pores. This paper reports sample-scale permittivity measurements made in four stable aggregate media with dual porosity. Results indicate two distinct dielectric responses depending on whether the aggregates are surrounded by water or air. We relate transitions in the permittivity response to the water retention characteristic (WRC), showing that after the interaggregate pores have drained, the slope of the water content–permittivity relationship is significantly reduced (permittivity values ranging from 5 to 7). The hydraulic critical water content …
Amherst Ma: A New Village Plan For Atkins Corner, Maggie Jones, Richard Barringer
Amherst Ma: A New Village Plan For Atkins Corner, Maggie Jones, Richard Barringer
Planning
The case study describes a successful smart growth initiative in the town of Amherst, Massachusetts, at an intersection known as Atkins Corner. The initiative grew from two motivating factors: the necessity of realigning Route 116, a major north-to-south artery through the town, to decrease traffic accidents at the intersection and improve pedestrian safety; and a desire on the part of Hampshire College and the Town to create a village center at the intersection. Through a consensus-building process involving key town officials, Hampshire College, neighbors, and the design firm of Dodson Associates, agreement on the project was reached with local stakeholders …
Water Current, Volume 38, No. 2. Spring 2006
Water Current, Volume 38, No. 2. Spring 2006
Water Current Newsletter
Contents • July Water and Natural Resources Tour To Look at Missouri River and Northeast Nebraska by Steve Ress • Adaptive Management Sees Resilience, Uncertainty as Allies; Third Annual Conference Looks at Innovation in Water Management by Charles Flowerday • From the Director • Meet the Faculty • Great Plains CESU Funding Assistance For UNL Nears $1 Million by Steve Ress • Two Join Staff of Water Center and Water Resources Research Initiative • Water Quality Improvement Grant for Papillion Creek Watershed by Steve Ress • Managing Drought and Water Scarcity in Vulnerable Environments: Creating a Roadmap for Change in …
The Fate And Transport Of Nitrogen (N) And The Effect Of Emergent Plants On Natural Treatment Of N-Species At Las Vegas Wash, Nevada, Tanju Kiriscioglu
The Fate And Transport Of Nitrogen (N) And The Effect Of Emergent Plants On Natural Treatment Of N-Species At Las Vegas Wash, Nevada, Tanju Kiriscioglu
UNLV Theses, Dissertations, Professional Papers, and Capstones
The purpose of this study is to analyze the effect of emergent plant communities at Las Vegas Wash (the System) using a system dynamics modeling approach. Understanding the dynamics of nitrogen (N —major polluting nutrient in the Wash) that enters the System is important because it occasionally causes algal blooms, choking Lake Mead through excessive eutrophication. Emergent plant communities are an integral part of wetland ecosystems and they play a crucial role in natural treatment of nutrients. This study is intended to test this hypothesis.
The study makes use of Wash data from reliable sources (Las Vegas Valley Water District, …
Movement Behavior And Habitat Selection Of The Endangered June Sucker (Chasmistes Liorus) In Utah Lake, Utah, Kris A. Buelow
Movement Behavior And Habitat Selection Of The Endangered June Sucker (Chasmistes Liorus) In Utah Lake, Utah, Kris A. Buelow
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The June sucker (Chasmistes liorus) is a pelagic feeding sucker endemic to Utah Lake, Utah. It has been listed as an endangered species with the present population being estimated with as few as 300 individuals. Efforts to reinvigorate the population by placing breeding age individuals and augmenting the population with hatchery-reared fish have proved to have had limited success. At this stage there is an imperative to understand the behavioral traits and life history of June sucker to retrieve them from the brink. Previous efforts have been hampered by few individuals and a difficult habitat to study. Utah …
Biosorption Of Priority Pollutants Of Petroleum Refinery Wastewater, Deen Adnan Sheikha
Biosorption Of Priority Pollutants Of Petroleum Refinery Wastewater, Deen Adnan Sheikha
Theses
Heavy metals and organic materials pollution in the aquatic system have become a serious threat today. Zinc, phenol and naphthalene are common environmental contaminants. The fate and transport of these chemicals must be sufficiently understood to predict detrimental environmental impacts and to develop technically and economically appropriate remedial action to minimize environmental degradation. In this study, microbial biomass has emerged as an option for developing economic wastewater treatment. Dead algal biomass may passively sequester metals and organic materials by the process of biosorption from dilute solutions, where biomass functions as an ion exchanger by virtue of various reactive groups available …
Anaerobic Biodegradation Of Rdx And Tce: Single- And Dual-Contaminant Batch Tests, Travis S. M. Young, Matthew C. Morley, Daniel D. Snow
Anaerobic Biodegradation Of Rdx And Tce: Single- And Dual-Contaminant Batch Tests, Travis S. M. Young, Matthew C. Morley, Daniel D. Snow
Nebraska Water Center: Faculty Publications
Several sites in the United States have groundwater contaminated with mixtures of high explosives and chlorinated solvents. This research examined the ability of two microbial cultures (anaerobic sludge and a facultative enrichment culture) to biodegrade single- and dual-contaminant mixtures of trichloroethene (TCE) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) under anaerobic conditions. In single component batch tests, both cultures degraded 0.6–1 mg RDX/L and its nitroso metabolites to below detection limits in <7 days. During initial 9-day TCE biodegradation tests, the anaerobic sludge did not transform TCE, whereas the facultative culture transformed approximately 10% of the initial 1.4 mg TCE/L. Prior to dual-contaminant batch tests, both cultures were grown in the presence of TCE. Subsequently, both acclimated cultures rapidly biodegraded mixtures of RDX and TCE. Both cultures degraded RDX and RDX-nitroso compounds to below detection limits in <4 days. In the same tests, TCE-acclimated anaerobic sludge converted TCE primarily to cis-dichloroethene (cis-DCE), while the acclimated facultative culture produced cis-DCE and other chlorinated metabolites. These preliminary results demonstrate that anaerobic bioremediation may be part of a feasible groundwater remediation …7>
Hydrological Effects And Groundwater Fluctuations In Interdunal Environments In The Nebraska Sandhills, David Gosselin, Venkataramana Sridhar, F. Edwin Harvey, James Goeke
Hydrological Effects And Groundwater Fluctuations In Interdunal Environments In The Nebraska Sandhills, David Gosselin, Venkataramana Sridhar, F. Edwin Harvey, James Goeke
Great Plains Research: A Journal of Natural and Social Sciences (through 2013)
Nine years of groundwater monitoring data has documented the important influence that topographic relief and location in the groundwater flow system have on the hydrologic function of interdunal valleys. The western "wet" valley at the Gudmundsen Sandhills Laboratory in central Nebraska, which is a net discharge area, is more strongly buffered from the effects of annual-scale climatic variability than the eastern "dry" valley. The east valley is generally an area of net recharge and as such is more responsive to climatic variability. This study employed a simple water balance approach to estimate evapotranspiration (ET) from water level measurements in the …
Quantifying, Monitoring, And Improving The Efficiency Of Flood Irrigation In The Hydrosphere Of Candelaria Farms Preserve, Albuquerque, New Mexico, Anders Lundahl
Water Resources Professional Project Reports
Irrigation efficiency is the percent ratio of the amount of water applied to a field versus the amount of that water consumptively used by the crops on that field. Irrigation efficiency can be determined either by estimating the amount of water consumed by the crops, or the amount of water that is not consumed by the crops. Based on measured irrigation applications and reference evapotranspiration (ETo), the irrigation efficiency of Candelaria Farms Preserve, a representative farm serviced by the Middle Rio Grande Conservancy District during the 2005 water year, was 52 percent.
Investigation Of Copper Contamination And Corrosion Scale Mineralogy In Aging Drink Water Distributions Systems, Nadja F. Turek
Investigation Of Copper Contamination And Corrosion Scale Mineralogy In Aging Drink Water Distributions Systems, Nadja F. Turek
Theses and Dissertations
Research has shown higher levels of copper appear in drinking water conveyed through relatively new copper piping systems; older piping systems typically deliver lower copper levels in their drinking water. This research contributes field data from a real drinking water distribution system, providing a better understanding of this phenomenon, as it relates to treatment considerations and compliance with the Lead and Copper Rule. Copper pipes and copper levels were sampled from drinking water taps of 16 buildings with pipes ranging in age from less than 1 to 48 years. Water samples from each building were collected before and following a …
Modeling Study To Quantify The Benefits Of Groundwater Contaminant Source Remediation, David E. Wagner
Modeling Study To Quantify The Benefits Of Groundwater Contaminant Source Remediation, David E. Wagner
Theses and Dissertations
The purpose of this research was to quantify the benefits of groundwater contaminant source remediation by using a model to simulate how reduction of source mass was related to reduction of contaminant concentration at a receptor. This thesis sought to answer three research questions: (1) how are contaminant source mass reduction and reduction of mass flux leaving the source-zone related; (2) how can we quantify the effect of the important natural attenuation processes that act upon the dissolved contaminant as it travels from the source zone to downgradient receptors, and (3) under specified site conditions, what is the maximum contaminant …
Validation Of Methods To Measure Mass Flux Of A Groundwater Contaminant, Hyouk Yoon
Validation Of Methods To Measure Mass Flux Of A Groundwater Contaminant, Hyouk Yoon
Theses and Dissertations
In this study, flux measurements obtained using two methods are compared with known mass fluxes in a meso-scale three-dimensional artificial aquifer. One method, the tandem recirculating well (TRW) method, is applied using two different techniques. One technique is simple and inexpensive, only requiring measurement of heads, while the second technique requires conducting a tracer test. The second method, the integrated pump test (IPT) method, requires use of one or more pumping and observation wells in various configurations. The results of the experiments in the artificial aquifer show that the most expensive technique, the TRW method using tracers, provides the most …