Regional geochemical databases for the northern Midwest USA are being compiled to examine the various geogenic and anthropogenic factors that control the chemistry of groundwater. At the regional scale, variations are seen that are attributable to agricultural and urban effects, or to geologic factors. Examples of the former include enrichments of nitrate in groundwater, while examples of the latter mainly highlight geochemical differences between carbonate rocks and all other rock types in the region. This paper examines a few of these regional effects and the spatial scales at which they can be observe
The U.S. Geological Survey initiated a project in 2015 aimed at evaluating geochemical exploration m...
Nitrate-contaminated aquifers are common in landscapes dominated by agricultural land use. Health co...
Alluvial aquifer systems where pumping of municipal wells induces recharge from the adjacent river a...
Master of ScienceDepartment of GeologyMatthew KirkGroundwater from the High Plains aquifer is vital ...
The State of Wisconsin is located in an unusually water-rich portion of the world in the western par...
Surface water-groundwater interaction within a karstic system enhances contaminant transport, making...
In the resolution of patterns of groundwater flow, certain surface expression is noted as being help...
University of Minnesota Ph.D. dissertation. June 2012. Major: Water Resources Science. Advisor: Dr. ...
The objectives of this study are to ascertain some of the most common structures and depositional s...
A four-decade dataset (1974–2013) of 107,823 nitrate samples in 25,993 wells from western and easter...
This study utilizes 234 samples to provide a regional characterization and analysis of groundwater c...
Includes bibliographical references (pages [114]-117)A preliminary groundwater investigation was com...
Indiana University-Purdue University Indianapolis (IUPUI)ABSTRACT Dustin Graves ASSESSING THE ROLE...
In 2001, the U.S. Geological Survey, as part of the National Water Quality Assessment (NAWQA) Progra...
The Great Plains (Dakota) aquifer system is one of the most extensive in North America, extending fr...
The U.S. Geological Survey initiated a project in 2015 aimed at evaluating geochemical exploration m...
Nitrate-contaminated aquifers are common in landscapes dominated by agricultural land use. Health co...
Alluvial aquifer systems where pumping of municipal wells induces recharge from the adjacent river a...
Master of ScienceDepartment of GeologyMatthew KirkGroundwater from the High Plains aquifer is vital ...
The State of Wisconsin is located in an unusually water-rich portion of the world in the western par...
Surface water-groundwater interaction within a karstic system enhances contaminant transport, making...
In the resolution of patterns of groundwater flow, certain surface expression is noted as being help...
University of Minnesota Ph.D. dissertation. June 2012. Major: Water Resources Science. Advisor: Dr. ...
The objectives of this study are to ascertain some of the most common structures and depositional s...
A four-decade dataset (1974–2013) of 107,823 nitrate samples in 25,993 wells from western and easter...
This study utilizes 234 samples to provide a regional characterization and analysis of groundwater c...
Includes bibliographical references (pages [114]-117)A preliminary groundwater investigation was com...
Indiana University-Purdue University Indianapolis (IUPUI)ABSTRACT Dustin Graves ASSESSING THE ROLE...
In 2001, the U.S. Geological Survey, as part of the National Water Quality Assessment (NAWQA) Progra...
The Great Plains (Dakota) aquifer system is one of the most extensive in North America, extending fr...
The U.S. Geological Survey initiated a project in 2015 aimed at evaluating geochemical exploration m...
Nitrate-contaminated aquifers are common in landscapes dominated by agricultural land use. Health co...
Alluvial aquifer systems where pumping of municipal wells induces recharge from the adjacent river a...