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: 25
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 Environmental Pr
Authors
Mark D. Kozar, David J. Weary
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 observed at 45
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
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 large plung
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
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 periods o
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
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. The recent c
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
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 the preser
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
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 coal region
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
No abstract available.
Authors
Mark D. Kozar, Kurt J. McCoy
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 yield of 0.
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
No abstract available.
Authors
Mark D. Kozar, Charlynn J. Sheets, Curt A. Hughes
Water quality in the Kanawha-New River basin: West Virginia, Virginia, and North Carolina, 1996-98
This report summarizes major findings about water quality in the Kanawha-New River basin that emerged from an assessment conducted between 1996 and 1998 by the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program. Water quality is discussed in terms of local and regional issues and compared to conditions found in all 36 NAWQA study areas assessed to date. Findings also a
Authors
Katherine S. Paybins, Terence Messinger, James H. Eychaner, Douglas B. Chambers, Mark D. Kozar
Ground-water quality in the Appalachian Plateaus, Kanawha River basin, West Virginia
Water samples collected from 30 privately-owned and small public-supply wells in the Appalachian Plateaus of the Kanawha River Basin were analyzed for a wide range of constituents, including bacteria, major ions, nutrients, trace elements, radon, pesticides, and volatile organic compounds. Concentrations of most constituents from samples analyzed did not exceed U.S. Environmental Protection Agency
Authors
Charlynn J. Sheets, Mark D. Kozar
Science and Products
Filter Total Items: 25
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 Environmental Pr
Authors
Mark D. Kozar, David J. Weary
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 observed at 45
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
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 large plung
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
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 periods o
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
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. The recent c
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
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 the preser
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
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 coal region
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
No abstract available.
Authors
Mark D. Kozar, Kurt J. McCoy
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 yield of 0.
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
No abstract available.
Authors
Mark D. Kozar, Charlynn J. Sheets, Curt A. Hughes
Water quality in the Kanawha-New River basin: West Virginia, Virginia, and North Carolina, 1996-98
This report summarizes major findings about water quality in the Kanawha-New River basin that emerged from an assessment conducted between 1996 and 1998 by the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program. Water quality is discussed in terms of local and regional issues and compared to conditions found in all 36 NAWQA study areas assessed to date. Findings also a
Authors
Katherine S. Paybins, Terence Messinger, James H. Eychaner, Douglas B. Chambers, Mark D. Kozar
Ground-water quality in the Appalachian Plateaus, Kanawha River basin, West Virginia
Water samples collected from 30 privately-owned and small public-supply wells in the Appalachian Plateaus of the Kanawha River Basin were analyzed for a wide range of constituents, including bacteria, major ions, nutrients, trace elements, radon, pesticides, and volatile organic compounds. Concentrations of most constituents from samples analyzed did not exceed U.S. Environmental Protection Agency
Authors
Charlynn J. Sheets, Mark D. Kozar