Mark D. Kozar
Mark Kozar is a hydrologist and groundwater specialist at the Virginia and West Virginia Water Science Center.
Science and Products
Filter Total Items: 27
Quality-assurance plan for groundwater activities, U.S. Geological Survey, Washington Water Science Center Quality-assurance plan for groundwater activities, U.S. Geological Survey, Washington Water Science Center
This report documents the standard procedures, policies, and field methods used by the U.S. Geological Survey’s (USGS) Washington Water Science Center staff for activities related to the collection, processing, analysis, storage, and publication of groundwater data. This groundwater quality-assurance plan changes through time to accommodate new methods and requirements developed by the...
Authors
Mark D. Kozar, Sue C. Kahle
Groundwater quality in West Virginia, 1993-2008 Groundwater quality in West Virginia, 1993-2008
Approximately 42 percent of all West Virginians rely on groundwater for their domestic water supply. However, prior to 2008, the quality of the West Virginia’s groundwater resource was largely unknown. The need for a statewide assessment of groundwater quality prompted the U.S. Geological Survey (USGS), in cooperation with West Virginia Department of Environmental Protection (WVDEP)...
Authors
Douglas B. Chambers, Mark D. Kozar, Jeremy S. White, Katherine S. Paybins
Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia
Due to increasing population and economic development in the northern Shenandoah Valley of Virginia and West Virginia, water availability has become a primary concern for water-resource managers in the region. To address these issues, the U.S. Geological Survey (USGS), in cooperation with the West Virginia Department of Health and Human Services and the West Virginia Department of...
Authors
Mark D. Kozar, David J. Weary
Hydrogeologic Factors Affecting Base-Flow Yields in the Jefferson County Area, West Virginia, October-November 2007 Hydrogeologic Factors Affecting Base-Flow Yields in the Jefferson County Area, West Virginia, October-November 2007
Base-flow yields at approximately the annual 75-percent-duration flow were determined for watersheds in the Jefferson County area, WV, from stream-discharge measurements made during October 31 to November 2, 2007. Five discharge measurements of Opequon Creek defined increased flow from 29,000,000 gallons per day (gal/d) at Carters Ford to 51,400,000 gal/d near Vanville. No flow was...
Authors
Ronald D. Evaldi, Katherine S. Paybins, Mark D. Kozar
Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia
Recent geologic mapping at a scale of 1:24,000 has enabled a qualitative correlation of the occurrence of springs and sinkholes with bedrock structures and ground-water conditions in the northern Great Valley of Virginia and West Virginia. Sinkholes tend to be concentrated in zones of faulting, local minor folding, and clustered within susceptible bedrock units at the noses and axes of...
Authors
Daniel H. Doctor, David J. Weary, Randall C. Orndorff, George E. Harlow, Mark D. Kozar, David L. Nelms
Hydrogeology and water quality of the Leetown area, West Virginia Hydrogeology and water quality of the Leetown area, West Virginia
The U.S. Geological Survey’s Leetown Science Center and the co-located U.S. Department of Agriculture’s National Center for Cool and Cold Water Aquaculture both depend on large volumes of cold clean ground water to support research operations at their facilities. Currently, ground-water demands are provided by three springs and two standby production wells used to augment supplies during...
Authors
Mark D. Kozar, Kurt J. McCoy, David J. Weary, Malcolm S. Field, Herbert A. Pierce, William Bane Schill, John A. Young
Hydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia Hydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia
The Leetown Science Center is a research facility operated by the U.S. Geological Survey that occupies approximately 455-acres near Kearneysville, Jefferson County, West Virginia. Aquatic and fish research conducted at the Center requires adequate supplies of high-quality, cold ground water. Three large springs and three production wells currently (in 2006) supply water to the Center...
Authors
Mark D. Kozar, David J. Weary, Katherine S. Paybins, Herbert A. Pierce
Relation of Chlorofluorocarbon Ground-Water Age Dates to Water Quality in Aquifers of West Virginia Relation of Chlorofluorocarbon Ground-Water Age Dates to Water Quality in Aquifers of West Virginia
The average apparent age of ground water in fractured-bedrock aquifers in West Virginia was determined using chlorofluorocarbon (CFC) dating methods. Since the introduction of CFC gases as refrigerants in the late 1930s, atmospheric concentrations have increased until production ceased in the mid-1990s. CFC dating methods are based on production records that date to the early 1940s, and...
Authors
J. Kurt, Mark D. Kozar
Ground-water quality in unmined areas and near reclaimed surface coal mines in the northern and central Appalachian coal regions, Pennsylvania and West Virginia Ground-water quality in unmined areas and near reclaimed surface coal mines in the northern and central Appalachian coal regions, Pennsylvania and West Virginia
Findings are presented from investigations during 1996-1998 by the U.S. Geological Survey National Water-Quality Assessment Program. Ground-water quality in 58 wells downgradient of reclaimed surface coal mines is compared to ground-water quality from 25 wells in unmined areas (background concentrations) in the bituminous coal fields of the northern Appalachian coal region (high-sulfur...
Authors
Steven D. McAuley, Mark D. Kozar
Geohydrology and simulation of ground-water flow in Ohio River alluvial aquifers near Point Pleasant, Lubeck, Parkersburg, Vienna, Moundsville, and Glendale, West Virginia Geohydrology and simulation of ground-water flow in Ohio River alluvial aquifers near Point Pleasant, Lubeck, Parkersburg, Vienna, Moundsville, and Glendale, West Virginia
No abstract available.
Authors
Mark D. Kozar, Kurt J. McCoy
Aquifer-characteristics data for West Virginia Aquifer-characteristics data for West Virginia
Specific-capacity, storage-coefficient, and specific-yield data for wells in West Virginia were compiled to provide a data set from which transmissivity could be estimated. This data can be used for analytical and mathematical groundwater flow modeling. Analysis of available storage-coefficient and (or) specific-yield data indicates the Ohio River alluvial aquifer has a median specific...
Authors
Mark D. Kozar, Melvin V. Mathes
Ground-water quality and geohydrology of the Blue Ridge physiographic province, New River basin, Virginia and North Carolina Ground-water quality and geohydrology of the Blue Ridge physiographic province, New River basin, Virginia and North Carolina
No abstract available.
Authors
Mark D. Kozar, Charlynn J. Sheets, Curt A. Hughes
Science and Products
Filter Total Items: 27
Quality-assurance plan for groundwater activities, U.S. Geological Survey, Washington Water Science Center Quality-assurance plan for groundwater activities, U.S. Geological Survey, Washington Water Science Center
This report documents the standard procedures, policies, and field methods used by the U.S. Geological Survey’s (USGS) Washington Water Science Center staff for activities related to the collection, processing, analysis, storage, and publication of groundwater data. This groundwater quality-assurance plan changes through time to accommodate new methods and requirements developed by the...
Authors
Mark D. Kozar, Sue C. Kahle
Groundwater quality in West Virginia, 1993-2008 Groundwater quality in West Virginia, 1993-2008
Approximately 42 percent of all West Virginians rely on groundwater for their domestic water supply. However, prior to 2008, the quality of the West Virginia’s groundwater resource was largely unknown. The need for a statewide assessment of groundwater quality prompted the U.S. Geological Survey (USGS), in cooperation with West Virginia Department of Environmental Protection (WVDEP)...
Authors
Douglas B. Chambers, Mark D. Kozar, Jeremy S. White, Katherine S. Paybins
Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia
Due to increasing population and economic development in the northern Shenandoah Valley of Virginia and West Virginia, water availability has become a primary concern for water-resource managers in the region. To address these issues, the U.S. Geological Survey (USGS), in cooperation with the West Virginia Department of Health and Human Services and the West Virginia Department of...
Authors
Mark D. Kozar, David J. Weary
Hydrogeologic Factors Affecting Base-Flow Yields in the Jefferson County Area, West Virginia, October-November 2007 Hydrogeologic Factors Affecting Base-Flow Yields in the Jefferson County Area, West Virginia, October-November 2007
Base-flow yields at approximately the annual 75-percent-duration flow were determined for watersheds in the Jefferson County area, WV, from stream-discharge measurements made during October 31 to November 2, 2007. Five discharge measurements of Opequon Creek defined increased flow from 29,000,000 gallons per day (gal/d) at Carters Ford to 51,400,000 gal/d near Vanville. No flow was...
Authors
Ronald D. Evaldi, Katherine S. Paybins, Mark D. Kozar
Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia
Recent geologic mapping at a scale of 1:24,000 has enabled a qualitative correlation of the occurrence of springs and sinkholes with bedrock structures and ground-water conditions in the northern Great Valley of Virginia and West Virginia. Sinkholes tend to be concentrated in zones of faulting, local minor folding, and clustered within susceptible bedrock units at the noses and axes of...
Authors
Daniel H. Doctor, David J. Weary, Randall C. Orndorff, George E. Harlow, Mark D. Kozar, David L. Nelms
Hydrogeology and water quality of the Leetown area, West Virginia Hydrogeology and water quality of the Leetown area, West Virginia
The U.S. Geological Survey’s Leetown Science Center and the co-located U.S. Department of Agriculture’s National Center for Cool and Cold Water Aquaculture both depend on large volumes of cold clean ground water to support research operations at their facilities. Currently, ground-water demands are provided by three springs and two standby production wells used to augment supplies during...
Authors
Mark D. Kozar, Kurt J. McCoy, David J. Weary, Malcolm S. Field, Herbert A. Pierce, William Bane Schill, John A. Young
Hydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia Hydrogeologic Setting and Ground-Water Flow in the Leetown Area, West Virginia
The Leetown Science Center is a research facility operated by the U.S. Geological Survey that occupies approximately 455-acres near Kearneysville, Jefferson County, West Virginia. Aquatic and fish research conducted at the Center requires adequate supplies of high-quality, cold ground water. Three large springs and three production wells currently (in 2006) supply water to the Center...
Authors
Mark D. Kozar, David J. Weary, Katherine S. Paybins, Herbert A. Pierce
Relation of Chlorofluorocarbon Ground-Water Age Dates to Water Quality in Aquifers of West Virginia Relation of Chlorofluorocarbon Ground-Water Age Dates to Water Quality in Aquifers of West Virginia
The average apparent age of ground water in fractured-bedrock aquifers in West Virginia was determined using chlorofluorocarbon (CFC) dating methods. Since the introduction of CFC gases as refrigerants in the late 1930s, atmospheric concentrations have increased until production ceased in the mid-1990s. CFC dating methods are based on production records that date to the early 1940s, and...
Authors
J. Kurt, Mark D. Kozar
Ground-water quality in unmined areas and near reclaimed surface coal mines in the northern and central Appalachian coal regions, Pennsylvania and West Virginia Ground-water quality in unmined areas and near reclaimed surface coal mines in the northern and central Appalachian coal regions, Pennsylvania and West Virginia
Findings are presented from investigations during 1996-1998 by the U.S. Geological Survey National Water-Quality Assessment Program. Ground-water quality in 58 wells downgradient of reclaimed surface coal mines is compared to ground-water quality from 25 wells in unmined areas (background concentrations) in the bituminous coal fields of the northern Appalachian coal region (high-sulfur...
Authors
Steven D. McAuley, Mark D. Kozar
Geohydrology and simulation of ground-water flow in Ohio River alluvial aquifers near Point Pleasant, Lubeck, Parkersburg, Vienna, Moundsville, and Glendale, West Virginia Geohydrology and simulation of ground-water flow in Ohio River alluvial aquifers near Point Pleasant, Lubeck, Parkersburg, Vienna, Moundsville, and Glendale, West Virginia
No abstract available.
Authors
Mark D. Kozar, Kurt J. McCoy
Aquifer-characteristics data for West Virginia Aquifer-characteristics data for West Virginia
Specific-capacity, storage-coefficient, and specific-yield data for wells in West Virginia were compiled to provide a data set from which transmissivity could be estimated. This data can be used for analytical and mathematical groundwater flow modeling. Analysis of available storage-coefficient and (or) specific-yield data indicates the Ohio River alluvial aquifer has a median specific...
Authors
Mark D. Kozar, Melvin V. Mathes
Ground-water quality and geohydrology of the Blue Ridge physiographic province, New River basin, Virginia and North Carolina Ground-water quality and geohydrology of the Blue Ridge physiographic province, New River basin, Virginia and North Carolina
No abstract available.
Authors
Mark D. Kozar, Charlynn J. Sheets, Curt A. Hughes