Joshua Valder
Midcontinent Region Science Coordinator
Education and Certifications
Doctorate of Philosophy, Atmospheric and Environmental Sciences, 2010, South Dakota School of Mines and Technology, Rapid City,SD;
Masters of Science, Geology and Geological Engineering, South Dakota
Affiliations and Memberships*
Adjunct Professor, South Dakota School of Mines and Technology, Rapid City, SD
Science and Products
Filter Total Items: 28
Revised groundwater-flow model of the glacial aquifer system north of Aberdeen, South Dakota, through water year 2015
The city of Aberdeen, in northeastern South Dakota, requires an expanded and sustainable supply of water to meet current and future demands. Conceptual and numerical models of the glacial aquifer system in the area north of Aberdeen were developed by the U.S. Geological Survey in cooperation with the City of Aberdeen in 2012. The U.S. Geological Survey, in cooperation with the City of Aberdeen, co
Authors
Joshua F. Valder, William G. Eldridge, Kyle W. Davis, Colton J. Medler, Karl R. Koth
Quality-assurance plan for groundwater activities, U.S. Geological Survey Dakota Water Science Center
As the Nation’s principal earth-science information agency, the U.S. Geological Survey (USGS) is depended upon to collect accurate data and produce factual and impartial interpretive reports. Methods for data collection and analysis that were developed by the USGS have become standard techniques used by numerous Federal, State, and local agencies and by private enterprises. The USGS has implemente
Authors
Joshua F. Valder, Janet M. Carter, Steven M. Robinson, Christopher D. Laveau, Joel A. Petersen
Conceptual model to assess water use associated with the life cycle of unconventional oil and gas development
As the demand for energy increases in the United States, so does the demand for water used to produce many forms of that energy. Technological advances, limited access to conventional oil and gas accumulations, and the rise of oil and gas prices resulted in increased development of unconventional oil and gas (UOG) accumulations. Unconventional oil and gas is developed using a method that combines
Authors
Joshua F. Valder, Ryan R. McShane, Theodore B. Barnhart, Roy Sando, Janet M. Carter, Robert F. Lundgren
Hydrogeologic framework and groundwater conditions of the Ararat Basin in Armenia
Armenia is a landlocked country located in the mountainous Caucasus region between Asia and Europe. It shares borders with the countries of Georgia on the north, Azerbaijan on the east, Iran on the south, and Turkey and Azerbaijan on the west. The Ararat Basin is a transboundary basin in Armenia and Turkey. The Ararat Basin (or Ararat Valley) is an intermountain depression that contains the Aras R
Authors
Joshua F. Valder, Janet M. Carter, Colton J. Medler, Ryan F. Thompson, Mark T. Anderson
Construction of a groundwater-flow model for the Big Sioux Aquifer using airborne electromagnetic methods, Sioux Falls, South Dakota
The city of Sioux Falls is the fastest growing community in South Dakota. In response to this continued growth and planning for future development, Sioux Falls requires a sustainable supply of municipal water. Planning and managing sustainable groundwater supplies requires a thorough understanding of local groundwater resources. The Big Sioux aquifer consists of glacial outwash sands and gravels a
Authors
Joshua F. Valder, Gregory C. Delzer, Janet M. Carter, Bruce D. Smith, David V. Smith
Building groundwater modeling capacity in Mongolia
Ulaanbaatar, the capital city of Mongolia (fig. 1), is dependent on groundwater for its municipal and industrial water supply. The population of Mongolia is about 3 million people, with about one-half the population residing in or near Ulaanbaatar (World Population Review, 2016). Groundwater is drawn from a network of shallow wells in an alluvial aquifer along the Tuul River. Evidence indicates th
Authors
Joshua F. Valder, Janet M. Carter, Mark T. Anderson, Kyle W. Davis, Michelle A. Haynes, Dorjsuren Dechinlhundev
Building science-based groundwater tools and capacity in Armenia for the Ararat Basin
The U.S. Geological Survey (USGS) and U.S. Agency for International Development (USAID) began a study in 2016 to help build science-based groundwater tools and capacity for the Ararat Basin in Armenia. The growth of aquaculture and other uses in the Ararat Basin has been accompanied by increased withdrawals of groundwater, which has resulted in a reduction of artesian conditions (decreased springf
Authors
Janet M. Carter, Joshua F. Valder, Mark T. Anderson, Patrick Meyer, Jo L. Eimers
Fluvial sediment fingerprinting: literature review and annotated bibliography
The U.S. Geological Survey has evaluated and adopted various field methods for collecting real-time sediment and nutrient data. These methods have proven to be valuable representations of sediment and nutrient concentrations and loads but are not able to accurately identify specific source areas. Recently, more advanced data collection and analysis techniques have been evaluated that show promise
Authors
Joyce E. Williamson, Adel E. Haj, John F. Stamm, Joshua F. Valder, Vicki L. Prautzch
Quality and age of shallow groundwater in the Bakken Formation production area, Williston Basin, Montana and North Dakota
The quality and age of shallow groundwater in the Bakken Formation production area were characterized using data from 30 randomly distributed domestic wells screened in the upper Fort Union Formation. Comparison of inorganic and organic chemical concentrations to health based drinking-water standards, correlation analysis of concentrations with oil and gas well locations, and isotopic data give no
Authors
Peter B. McMahon, Rodney R. Caldwell, Joel M. Galloway, Joshua F. Valder, Andrew G. Hunt
Anthropogenic organic compounds in source water of select community water systems in the United States, 2002-10
Drinking water delivered by community water systems (CWSs) comes from one or both of two sources: surface water and groundwater. Source water is raw, untreated water used by CWSs and is usually treated before distribution to consumers. Beginning in 2002, the U.S. Geological Survey’s (USGS) National Water-Quality Assessment Program initiated Source Water-Quality Assessments (SWQAs) at select CWSs a
Authors
Joshua F. Valder, Gregory C. Delzer, James A. Kingsbury, Jessica A. Hopple, Curtis V. Price, David A. Bender
Prioritization of constituents for national- and regional-scale ambient monitoring of water and sediment in the United States
A total of 2,541 constituents were evaluated and prioritized for national- and regional-scale ambient monitoring of water and sediment in the United States. This prioritization was done by the U.S. Geological Survey (USGS) in preparation for the upcoming third decade (Cycle 3; 2013–23) of the National Water-Quality Assessment (NAWQA) Program. This report provides the methods used to prioritize the
Authors
Lisa D. Olsen, Joshua F. Valder, Janet M. Carter, John S. Zogorski
Multivariate statistical approach to estimate mixing proportions for unknown end members
A multivariate statistical method is presented, which includes principal components analysis (PCA) and an end-member mixing model to estimate unknown end-member hydrochemical compositions and the relative mixing proportions of those end members in mixed waters. PCA, together with the Hotelling T2 statistic and a conceptual model of groundwater flow and mixing, was used in selecting samples that be
Authors
Joshua F. Valder, Andrew J. Long, Arden D. Davis, Scott J. Kenner
Science and Products
Filter Total Items: 28
Revised groundwater-flow model of the glacial aquifer system north of Aberdeen, South Dakota, through water year 2015
The city of Aberdeen, in northeastern South Dakota, requires an expanded and sustainable supply of water to meet current and future demands. Conceptual and numerical models of the glacial aquifer system in the area north of Aberdeen were developed by the U.S. Geological Survey in cooperation with the City of Aberdeen in 2012. The U.S. Geological Survey, in cooperation with the City of Aberdeen, co
Authors
Joshua F. Valder, William G. Eldridge, Kyle W. Davis, Colton J. Medler, Karl R. Koth
Quality-assurance plan for groundwater activities, U.S. Geological Survey Dakota Water Science Center
As the Nation’s principal earth-science information agency, the U.S. Geological Survey (USGS) is depended upon to collect accurate data and produce factual and impartial interpretive reports. Methods for data collection and analysis that were developed by the USGS have become standard techniques used by numerous Federal, State, and local agencies and by private enterprises. The USGS has implemente
Authors
Joshua F. Valder, Janet M. Carter, Steven M. Robinson, Christopher D. Laveau, Joel A. Petersen
Conceptual model to assess water use associated with the life cycle of unconventional oil and gas development
As the demand for energy increases in the United States, so does the demand for water used to produce many forms of that energy. Technological advances, limited access to conventional oil and gas accumulations, and the rise of oil and gas prices resulted in increased development of unconventional oil and gas (UOG) accumulations. Unconventional oil and gas is developed using a method that combines
Authors
Joshua F. Valder, Ryan R. McShane, Theodore B. Barnhart, Roy Sando, Janet M. Carter, Robert F. Lundgren
Hydrogeologic framework and groundwater conditions of the Ararat Basin in Armenia
Armenia is a landlocked country located in the mountainous Caucasus region between Asia and Europe. It shares borders with the countries of Georgia on the north, Azerbaijan on the east, Iran on the south, and Turkey and Azerbaijan on the west. The Ararat Basin is a transboundary basin in Armenia and Turkey. The Ararat Basin (or Ararat Valley) is an intermountain depression that contains the Aras R
Authors
Joshua F. Valder, Janet M. Carter, Colton J. Medler, Ryan F. Thompson, Mark T. Anderson
Construction of a groundwater-flow model for the Big Sioux Aquifer using airborne electromagnetic methods, Sioux Falls, South Dakota
The city of Sioux Falls is the fastest growing community in South Dakota. In response to this continued growth and planning for future development, Sioux Falls requires a sustainable supply of municipal water. Planning and managing sustainable groundwater supplies requires a thorough understanding of local groundwater resources. The Big Sioux aquifer consists of glacial outwash sands and gravels a
Authors
Joshua F. Valder, Gregory C. Delzer, Janet M. Carter, Bruce D. Smith, David V. Smith
Building groundwater modeling capacity in Mongolia
Ulaanbaatar, the capital city of Mongolia (fig. 1), is dependent on groundwater for its municipal and industrial water supply. The population of Mongolia is about 3 million people, with about one-half the population residing in or near Ulaanbaatar (World Population Review, 2016). Groundwater is drawn from a network of shallow wells in an alluvial aquifer along the Tuul River. Evidence indicates th
Authors
Joshua F. Valder, Janet M. Carter, Mark T. Anderson, Kyle W. Davis, Michelle A. Haynes, Dorjsuren Dechinlhundev
Building science-based groundwater tools and capacity in Armenia for the Ararat Basin
The U.S. Geological Survey (USGS) and U.S. Agency for International Development (USAID) began a study in 2016 to help build science-based groundwater tools and capacity for the Ararat Basin in Armenia. The growth of aquaculture and other uses in the Ararat Basin has been accompanied by increased withdrawals of groundwater, which has resulted in a reduction of artesian conditions (decreased springf
Authors
Janet M. Carter, Joshua F. Valder, Mark T. Anderson, Patrick Meyer, Jo L. Eimers
Fluvial sediment fingerprinting: literature review and annotated bibliography
The U.S. Geological Survey has evaluated and adopted various field methods for collecting real-time sediment and nutrient data. These methods have proven to be valuable representations of sediment and nutrient concentrations and loads but are not able to accurately identify specific source areas. Recently, more advanced data collection and analysis techniques have been evaluated that show promise
Authors
Joyce E. Williamson, Adel E. Haj, John F. Stamm, Joshua F. Valder, Vicki L. Prautzch
Quality and age of shallow groundwater in the Bakken Formation production area, Williston Basin, Montana and North Dakota
The quality and age of shallow groundwater in the Bakken Formation production area were characterized using data from 30 randomly distributed domestic wells screened in the upper Fort Union Formation. Comparison of inorganic and organic chemical concentrations to health based drinking-water standards, correlation analysis of concentrations with oil and gas well locations, and isotopic data give no
Authors
Peter B. McMahon, Rodney R. Caldwell, Joel M. Galloway, Joshua F. Valder, Andrew G. Hunt
Anthropogenic organic compounds in source water of select community water systems in the United States, 2002-10
Drinking water delivered by community water systems (CWSs) comes from one or both of two sources: surface water and groundwater. Source water is raw, untreated water used by CWSs and is usually treated before distribution to consumers. Beginning in 2002, the U.S. Geological Survey’s (USGS) National Water-Quality Assessment Program initiated Source Water-Quality Assessments (SWQAs) at select CWSs a
Authors
Joshua F. Valder, Gregory C. Delzer, James A. Kingsbury, Jessica A. Hopple, Curtis V. Price, David A. Bender
Prioritization of constituents for national- and regional-scale ambient monitoring of water and sediment in the United States
A total of 2,541 constituents were evaluated and prioritized for national- and regional-scale ambient monitoring of water and sediment in the United States. This prioritization was done by the U.S. Geological Survey (USGS) in preparation for the upcoming third decade (Cycle 3; 2013–23) of the National Water-Quality Assessment (NAWQA) Program. This report provides the methods used to prioritize the
Authors
Lisa D. Olsen, Joshua F. Valder, Janet M. Carter, John S. Zogorski
Multivariate statistical approach to estimate mixing proportions for unknown end members
A multivariate statistical method is presented, which includes principal components analysis (PCA) and an end-member mixing model to estimate unknown end-member hydrochemical compositions and the relative mixing proportions of those end members in mixed waters. PCA, together with the Hotelling T2 statistic and a conceptual model of groundwater flow and mixing, was used in selecting samples that be
Authors
Joshua F. Valder, Andrew J. Long, Arden D. Davis, Scott J. Kenner
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government