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Articles 31 - 60 of 252
Full-Text Articles in Physical Sciences and Mathematics
Runoff Quality Responses To Cattle-Gazing Strategy And Grassed Buffer Zone Length, Dwayne R. Edwards, Brian T. Larsen, Teng T. Lim
Runoff Quality Responses To Cattle-Gazing Strategy And Grassed Buffer Zone Length, Dwayne R. Edwards, Brian T. Larsen, Teng T. Lim
KWRRI Research Reports
Grazed pastures represent a source of potential nonpoint pollution. In comparison to other nonpoint sources (e.g., row-cropped lands), relatively little information exists regarding possible magnitudes of pollution from grazed pasture; how that pollution is affected by weather, soil, management and other variables; and how the pollution can be minimized. The objective of this study was to assess how the quality of runoff from simulated grazed pasture is influenced by grazing duration (4-12 weeks), grazing strategy (no grazing, conventional grazing and rotational grazing), and by the use of grassed buffer strips (ranging in length from O to 18.3 m) installed down-slope …
Development Of A River Basin Management Framework Using Gis And Watershed Modeling: Application To The North Fork Of The Kentucky River, L. Ormsbee, S. Yost, T. Stumbur, T. Bischoff
Development Of A River Basin Management Framework Using Gis And Watershed Modeling: Application To The North Fork Of The Kentucky River, L. Ormsbee, S. Yost, T. Stumbur, T. Bischoff
KWRRI Research Reports
No abstract provided.
Modeling Transport Of Colloid-Bound Herbicides And Heavy Metals To Groundwater, Anastasios D. Karathanasis, R. E. Phillips, A. K. Seta
Modeling Transport Of Colloid-Bound Herbicides And Heavy Metals To Groundwater, Anastasios D. Karathanasis, R. E. Phillips, A. K. Seta
KWRRI Research Reports
Recent studies have suggested that contaminant transport to groundwater may be enhanced by association with colloidal particles. This study evaluated the role of water dispersible colloids with diverse mineralogical composition in co-transporting selected herbicides and heavy metals through intact soil columns. Colloid recovery in the eluents ranged from 45-90% for the herbicides and 10-60% for the heavy metals. The presence of colloids enhanced the transport of atrazine by 2-18%, and metolachlor by 8-30%. The corresponding increase for Cu and Zn was 2-150 and 5-30 times, respectively. For Pb, there was essentially no elution in the absence of colloids, suggesting nearly …
Formulation Enhanced Transport Of A Soil Applied Herbicide, V. P. Evangelou, Louis M. Mcdonald, Sandra Prima
Formulation Enhanced Transport Of A Soil Applied Herbicide, V. P. Evangelou, Louis M. Mcdonald, Sandra Prima
KWRRI Research Reports
Because pesticides are applied as formulated particles and the affinity of the active ingredient for the formulation is higher than for the bulk water, we hypothesized that a formulation complex could affect active ingredient transport. Our objectives were to investigate the nature and extent of surfactant-atrazine-clay/oxide surface interactions. When atrazine and an anionic surfactant were dried onto plain or Fe-coated sand and leached, atrazine concentrations in the initial leachate were lower in the Fe-coated sand treatment. This was likely due to an electrostatic attraction between the sand and surfactant. When a nonionic surfactant was used, atrazine concentration in the initial …
Metal-Resistance Genetically Engineered Bacteria, Sylvia Daunert, Donna Scott, Sridhar Ramanathan
Metal-Resistance Genetically Engineered Bacteria, Sylvia Daunert, Donna Scott, Sridhar Ramanathan
KWRRI Research Reports
Bacterial-based electrochemical and optical sensing systems that respond in a highly selective and sensitive manner to antimonite and arsenite have been developed. This was accomplished by using genetically engineered bacteria bearing one of two plasmids constructed for our studies. The first plasmid, pBGD23, contains the operator/promoter region (O/P) and the gene of the ArsR protein from the ars operon upstream from the β-galactosidase gene. In the absence of antimonite/arsenite, ArsR binds to the 0/P site and prevents the transcription of the genes for ArsR and β-galactosidase, thus blocking expression of these proteins. When antimonite or arsenite is present in the …
Flash-Flood Monitoring And Modeling In Kentucky, Mark French, Nageshwar Bhaskar, George K. A. Kyiamah
Flash-Flood Monitoring And Modeling In Kentucky, Mark French, Nageshwar Bhaskar, George K. A. Kyiamah
KWRRI Research Reports
This research project focused on the evaluation of hydrologic issue of flash-flooding in the state of Kentucky. The primary objectives of this project were the following:
(1) to initiate the establishment of a hydrologic database archive necessary for characterizing rainfall and runoff associated with flash-flooding;
(2) identification of appropriate modeling approaches for evaluating site-specific flash-flood runoff behavior.
Specific tasks accomplished to meet the objectives include the following:
(1) development of a rainfall and streamflow data archive using existing measurement gages and identification of the rain gage data from two sources for preliminary quality control;
(2) identification of the spatial and …
Task Ll Report, Part 2: Evaluation Of Water Supplies In The Red River, Dix River, And Mainstem Watersheds Of The Kentucky River, D. I. Carey, A. W. Fogle, L. G. Morris
Task Ll Report, Part 2: Evaluation Of Water Supplies In The Red River, Dix River, And Mainstem Watersheds Of The Kentucky River, D. I. Carey, A. W. Fogle, L. G. Morris
KWRRI Research Reports
This study was part of a larger study of water supplies throughout the Kentucky River Basin conducted by the Kentucky Water Resources Research Institute for the Kentucky River Authority. This report examines municipal and private water supplies in the Red River, Dix River, and mainstem Kentucky River watersheds. Municipal supplies which depend on the mainstem Kentucky River, and municipal and private supplies in the North, South, and Middle Fork watersheds of the Kentucky River basin are examined in separate reports.
Water Use Estimation And Forecasting For The Kentucky River Basin: A Preliminary Draft Report, Glenn C. Blomquist, William Hoyt, Dayuan Hu, Colleeen G. Scott
Water Use Estimation And Forecasting For The Kentucky River Basin: A Preliminary Draft Report, Glenn C. Blomquist, William Hoyt, Dayuan Hu, Colleeen G. Scott
KWRRI Research Reports
We estimate aggregate monthly water use for summer, peak demand and nonsummer off-peak demand periods for the Kentucky River Basin. Using Kentucky Division of Water use data, U.S. Census data for county demographic and economic conditions, and U.S. Weather Service data for weather conditions we estimate use for the 1970-1993 period. Our model allows for idiosyncratic effects of each of the 27 counties in the sample. We find factors such as population and manufacturing employment effect use and temperature and rainfall in current and preceding months effect use during the summer, peak period. The model predicts well within the sample …
Executive Summary: Kentucky River Basin Water Supply Assessment Study, L. Ormsbee
Executive Summary: Kentucky River Basin Water Supply Assessment Study, L. Ormsbee
KWRRI Research Reports
This is a high level summary of the KWRRI study assessing the water supply concerns in the Kentucky River Basin.
Evaluation Of Water Supplies In The Upper Forks Of The Kentucky River Basin, Kentucky Water Resource Research Institute
Evaluation Of Water Supplies In The Upper Forks Of The Kentucky River Basin, Kentucky Water Resource Research Institute
KWRRI Research Reports
This study examined municipal and private water supplies in the Upper Forks of the Kentucky River. Municipal water systems in Letcher, Knott, Leslie, and Breathitt counties in the North Fork Kentucky River Basin, Leslie county in the Middle Fork Kentucky River Basin, and Owsley and Clay counties in the South Fork Kentucky River were examined for current and projected water supply adequacy and water system needs. Eight municipal water suppliers- Fleming-Neon Water Company, Whitesburg Municipal Water, Hindman Municipal Water Works, Hazard Water Department, Jackson Municipal Water Works, Booneville Water and Sewer, and Manchester Water Works- and three purchasing districts: Vicco …
Task V Report- Estimation Of The Responsiveness Of Water Use To Changes In Rates: A Methodology And Final Estimates Using Kawc Data, G. Blomquist, W. Hoyt
Task V Report- Estimation Of The Responsiveness Of Water Use To Changes In Rates: A Methodology And Final Estimates Using Kawc Data, G. Blomquist, W. Hoyt
KWRRI Research Reports
No abstract provided.
Kybasin: A Water Supply Assessment Model For The Kentucky River Basin, J. Herman, L. Ormsbee
Kybasin: A Water Supply Assessment Model For The Kentucky River Basin, J. Herman, L. Ormsbee
KWRRI Research Reports
KYBASIN is a computer model developed for the Kentucky River Authority by the Kentucky Water Reource Research Institute (KWRRI) for the express purpose of simulating the Kentucky River Basin under a severe drought. The model was developed as part of the KWRRI Kentucky River Basin Water Supply Assessment Study. This study was authorized by the KRA in a contract with the KWRRI dated April 1, 1995. Ownership of the model is exclusively that of the Authority and specific rules governing KYBASIN'S distribution or license agreement nay be applicable. It is strongly recommended the user contact the Authority concerning this matter …
Kyrom: A Drought Management Model For The Kentucky River Basin Users Manual, J. Herman, L. Ormsbee
Kyrom: A Drought Management Model For The Kentucky River Basin Users Manual, J. Herman, L. Ormsbee
KWRRI Research Reports
The Kentucky River Operation and Management model is a computer application developed for the Kentucky River Authority by the Kentucky Water Resources Research Institute (KWRRI) for the purpose of simulating the Kentucky River Basin during drought periods. The model was developed as part of the KWRRI Kentucky River Basin Water Supply Assessment Study. This study was authorized by the KRA in a contract with the KWRRI dated April 1, 1995. Ownership of the model is exclusively that of the Authority and specific rules governing KYROM's distribution or license agreement may be applicable. It is strongly recommended the user contact the …
Task L Report: Summary And Evaluation Of Water Supply Studies For The Kentucky River Basin, L. Ormsbee, J. Herman, G. Blomquist, W. Hoyt
Task L Report: Summary And Evaluation Of Water Supply Studies For The Kentucky River Basin, L. Ormsbee, J. Herman, G. Blomquist, W. Hoyt
KWRRI Research Reports
This report provides a review and critique of previous water supply studies for the Kentucky River Basin. The main focus of the review is on the 1990 Harza study, entitled Phase 1 Report: Water Demands and Water Supply Yield and Deficit.
Task Lll Report: Deficit Analysis, L. Ormsbee, J. Herman
Task Lll Report: Deficit Analysis, L. Ormsbee, J. Herman
KWRRI Research Reports
This report summarizes the water supply deficit results of Phase lll of the KWRRI Kentucky River Basin Water Supply Assessment Study commissioned by the Kentucky River Authority. The purpose of Phase lll is to quantify water supply in the Kentucky River Basin during a severe drought for the existing supply system/resources under current and projected demand forecasts. A quantification of the susceptibility of the basin to a severe drought is necessary for the Authority to properly develop a long-range water supply plan.
This is part 3 of a three part Assessment Study of the River basin water supply.
Task I Report: Summary And Evaluation Of Previous Water Supply Studies For The Kentucky River Basin, Kentucky Water Resources Research Institute
Task I Report: Summary And Evaluation Of Previous Water Supply Studies For The Kentucky River Basin, Kentucky Water Resources Research Institute
KWRRI Research Reports
This report summarizes the results of Task I of the KWRRI Kentucky River Basin Water Supply Assessment Study.The KWRRI study was requested by the Kentucky River Authority in order to provide a basis for management decisions for the Kentucky River Basin. This study was necessitated as a result of unexamined or changing conditions that could significantly impact the conclusions and recommendations of the previous HARZA studies (Harza, et al, 1990; Harza, et al, 1991).
Fish Lateral Line Neurophysiological And Neurobehavioral Responses As A Sensitive Water Quality Monitoring System, Hong Y. Yan
Fish Lateral Line Neurophysiological And Neurobehavioral Responses As A Sensitive Water Quality Monitoring System, Hong Y. Yan
KWRRI Research Reports
Cadmium is a heavy metal ion that can cause deleterious effects on aquatic animals. This study uses both electrophysiological recordings from lateral line nerves and videotaping of schooling behavior to investigate the effects of cadmium exposure on fish. The fathead minnows were exposed to cadmium at a concentration of 450 μg/1 over a 24-hr period. Extracellular recording with a silver hook electrode was used to record compound action potentials from the lateral lines of control and experimental fish. After a short time exposure (24 hr) to cadmium ions, all of the electrophysiological activities of the lateral line nerves were suppressed. …
Potential For Crop Residue To Restrict Herbicide Movement In Surface From Water Corn And Soybean Fields, William W. Witt
Potential For Crop Residue To Restrict Herbicide Movement In Surface From Water Corn And Soybean Fields, William W. Witt
KWRRI Research Reports
As no-tillage and other conservation tillage practices continue to increase, it is important to have knowledge of herbicide adsorption on crop residue with regard to the potential for the herbicide to be removed from the residue and move with runoff water from the field into nearby surface waters. Previous research had compared herbicide adsorption to various residues, but it was difficult to make comparisons among these studies because the residues were from different crops or the amount of residue decomposition was different. The amount of "weathering" or "aging" of the residue at the time of herbicide treatment could alter the …
Technical Appendix To Task Iii Report: Deficit Algorythm Methodology, J. Herman, L. Ormsbee
Technical Appendix To Task Iii Report: Deficit Algorythm Methodology, J. Herman, L. Ormsbee
KWRRI Research Reports
This appendix contains a detailed description of the algorithm used by the KYBASIN model to quantify water supply deficits in the Kentucky River Basin. This document is an attachment to the report entitled Task III Report-Deficit Analysis (Ormsbee and Herman, 1996), which summarizes the water supply deficit results of Phase III of the KWRRI Kentucky River Basin Water Supply Assessment Study. The purpose of the study was to quantify water supply in the Kentucky River Basin during a severe drought for the existing supply system/resources under current and projected demand forecasts. The study was authorized by the Kentucky River Authority …
Task Ii Report: Part 1: Evaluation Of Water Supplies In The North, South, And Middle Fork Kentucky River Watersheds, D. I. Carey, L. G. Morris
Task Ii Report: Part 1: Evaluation Of Water Supplies In The North, South, And Middle Fork Kentucky River Watersheds, D. I. Carey, L. G. Morris
KWRRI Research Reports
No abstract provided.
Task V Report: Development And Evaluation Of Water Supply Alternatives, L. Ormsbee, J. Herman
Task V Report: Development And Evaluation Of Water Supply Alternatives, L. Ormsbee, J. Herman
KWRRI Research Reports
This report documents the procedure and results of Task V of the KWRRI Kentucky River Water Supply Assessment Study. This was authorized by the Kentucky River Authority in a contract with the Kentucky Water Resources Research Institute dated April 1, 1995. The three major tasks of the study are outlined below:
Task I. Review and assess previous studies and finalize study plan.
Task II. Assess and forecast demand and availability of water by/for off-stem users (Including the upper forks of the Kentucky River.)
Task III. Assess and forecast demand and availability of water by/for off-stem users (Including the impacts of …
Task Iii Report: Water Use Estimation And Forecasting For The Kentucky River Basin, Glenn C. Blomquist, William Hoyt, D. Hu, C. Scott
Task Iii Report: Water Use Estimation And Forecasting For The Kentucky River Basin, Glenn C. Blomquist, William Hoyt, D. Hu, C. Scott
KWRRI Research Reports
We estimate aggregate monthly water use for summer, peak demand and nonsummer off-peak demand periods for the Kentucky River Basin. Using Kentucky Division of Water use data, U.S. Census data for county demographic and economic conditions, and U.S. Weather Service data for weather conditions we estimate use for the 1970-1993 period. Our model allows for idiosyncratic effects of each of the 27 counties in the sample. We find factors such as population and manufacturing employment affect use and temperature and rainfall in current and preceding months effect use during the summer, peak period. The model predicts well within the sample …
Kentucky River Basin Water Supply Assessment Study, Kentucky Water Resources Research Institute
Kentucky River Basin Water Supply Assessment Study, Kentucky Water Resources Research Institute
KWRRI Research Reports
This report summarizes the results of task 1 of the KWRRI Kentucky River Basin Water Supply Assessment Study. The KWRRI study was requested by the Kentucky River Authority in order to provide a basis for management decisions for the Kentucky River Basin. This study was necessitated as a result of unexamined or changing conditions that could significantly impact the conclusions and recommendations of the previous HARZA studies (Harza, et al, 1990; Harza, et al, 1991.)
Among the unexamined or changed conditions are the following:
1. New population forecasts.
2. Impacts of water rates on consumption.
3. Impacts of demand curtailment …
Groundwater Study: Toyota Motor Manufacturing, Usa Georgetown, Kentucky, Gary Felton, Lyle V. A. Sendlein, Teri Dowdy, Daryl Hines
Groundwater Study: Toyota Motor Manufacturing, Usa Georgetown, Kentucky, Gary Felton, Lyle V. A. Sendlein, Teri Dowdy, Daryl Hines
KWRRI Research Reports
An eighteen month study of the Toyota Motor Manufacturing (TMM) plant site and the surrounding area was undertaken. The basic charge for this project was to characterize the groundwater that is potentially impacted by the TMM plant site. This included occurrence, flow direction, and, if possible, velocity. Because the area is karstified (has sinkholes, springs, caves, etc.) surface water and groundwater are intimately connected and, hence, surface water was frequently an important component of this work.
Data from TMM construction plans and monitoring work done subsequent to construction were elicited from the various repositories within the TMM infrastructure. Aerial color …
Chemical And Biological Monitoring Of A Constructed Wetland On Jones Branch Treating Acid Mine Drainage, Barbara A. Ramey, George Chalfant, Jon A. Walker
Chemical And Biological Monitoring Of A Constructed Wetland On Jones Branch Treating Acid Mine Drainage, Barbara A. Ramey, George Chalfant, Jon A. Walker
KWRRI Research Reports
Acid mine drainage (AMD) from an abandoned underground coal mine in the Jones Branch watershed in McCreary County, KY, substantially reduced water quality in Jones Branch. Downstream from the mine seeps, the pH was routinely below 4.5 and concentrations of most heavy metals, especially iron, were elevated. A cattail wetland (1,022 m2) was constructed on Jones Branch in 1988-1989 to obviate the effects of the AMD. Monthly chemical monitoring was performed on the water from above, from below, from the inlet and outlet of the wetland, and from the 25 cells within the wetland. Based on chemical monitoring, …
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part Ll: Diesel, Heating Oil, Other Middle Distillates And Waste Oil, Wesley J. Birge, A. J. Grant, J. R. Shaw, M. D. Kercher, D. P. Keogh
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part Ll: Diesel, Heating Oil, Other Middle Distillates And Waste Oil, Wesley J. Birge, A. J. Grant, J. R. Shaw, M. D. Kercher, D. P. Keogh
KWRRI Research Reports
This report consists of an appendix :Risk Assessment Plan for Petroleum Underground Storage Tanks in Kentucky and a second appendix: Environmental Half-Life and Ecological Effects of PAHs
Cso Impact Assessment For Banklick Creek, Lindell E. Ormsbee, A. Reddy, S. Gruzesky, A. Jain
Cso Impact Assessment For Banklick Creek, Lindell E. Ormsbee, A. Reddy, S. Gruzesky, A. Jain
KWRRI Research Reports
This report contains the results of a combined sewer overflow (CSO) impact assessment study for Banklick Creek, which flows into the Licking River just south of Covington, Kentucky in Kenton County, Kentucky. This study is a component of a larger study that was conducted to determine the general impact of CSOs in the Northern Kentucky Region. The study was conducted through the Kentucky Water Resource Research Institute of the University of Kentucky and was funded by the Kentucky Natural Resources and Environmental Protection Cabinet through a grant from the United States Environmental Protection Agency.
Lead In Kentucky Soils, T. W. Struttmann, Lyle V. A. Sendlein, Dave Fletcher
Lead In Kentucky Soils, T. W. Struttmann, Lyle V. A. Sendlein, Dave Fletcher
KWRRI Research Reports
This study reviewed the literature on the occurrence of lead in soils and its relationship to waste oil tank leaks. Many studies have been conducted on the natural occurrence of lead in rocks, soils and water. Very low levels (0.001 mg/l to 0.01 mg/l) are found in surface and groundwater, variable levels are found in soils (from less that 10 ppm to as high as 700 ppm but more normally a high of 70 ppm), and the lead levels found in rocks range from 7 to 80 mg/kg.
Risk assessment calculations have been made by several individuals, also with variable …
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Wesley J. Birge, L. C. Taylor, M. D. Kircher, A. J. Grant
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Wesley J. Birge, L. C. Taylor, M. D. Kircher, A. J. Grant
KWRRI Research Reports
This study addresses the development of guidelines for corrective actions to be applied to petroleum underground storage tanks (USTs) within the Commonwealth of Kentucky. The report presents findings and recommendations for gasoline, diesel fuel, heating oil, kerosene, jet fuel, and waste oil.
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part 1: Gasoline, Wesley J. Birge, M. D. Kercher, D. P. Keogh, L. C. Taylor
Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part 1: Gasoline, Wesley J. Birge, M. D. Kercher, D. P. Keogh, L. C. Taylor
KWRRI Research Reports
This report consists of three appendix:
- I Risk Assessment Procedures and Calculations
- II BTEX Half-life Estimates in Air, Soil, Groundwater, and Surface Water
- III Environmental and Ecological Effects of BTEX