Professional Paper 1737-A
This report is available below as a complete 288-page PDF and as separate PDF files of each of the publication sections.
This study of the Transport of Anthropogenic and Natural Contaminants to public-supply wells (TANC study) is being conducted as part of the U.S. Geological Survey National Water Quality Assessment (NAWQA) Program and was designed to increase understanding of the most important factors to consider in ground-water vulnerability assessments. The seven TANC studies that began in 2001 used retrospective data and ground-water flow models to evaluate hydrogeologic variables that affect aquifer susceptibility and vulnerability at a regional scale. Ground-water flow characteristics, regional water budgets, pumping-well information, and water-quality data were compiled from existing data and used to develop conceptual models of ground-water conditions for each study area. Steady-state regional ground-water flow models were used to represent the conceptual models, and advective particle-tracking simulations were used to compute areas contributing recharge and traveltimes from recharge to selected public-supply wells. Retrospective data and modeling results were tabulated into a relational database for future analysis. Seven study areas were selected to evaluate a range of hydrogeologic settings and management practices across the Nation: the Salt Lake Valley, Utah; the Eagle Valley and Spanish Springs Valley, Nevada; the San Joaquin Valley, California; the Northern Tampa Bay region, Florida; the Pomperaug River Basin, Connecticut; the Great Miami River Basin, Ohio; and the Eastern High Plains, Nebraska. This Professional Paper Chapter presents the hydrogeologic settings and documents the ground-water flow models for each of the NAWQA TANC regional study areas that began work in 2001. Methods used to compile retrospective data, determine contributing areas of public-supply wells, and characterize oxidation-reduction (redox) conditions also are presented. This Professional Paper Chapter provides the foundation for future susceptibility and vulnerability analyses in the TANC study areas and comparisons among regional aquifer systems. The report is organized in sections. In addition to the introductory section (Section 1) are seven sections that present the hydrogeologic characterization and ground-water flow model documentation for each TANC regional study area (Sections 2 through 8). Abstracts in Sections 2 through 8 provide summaries and major findings for each regional study area.
Download the complete report in PDF format: Professional Paper 1737-A
|Download Section 1||Overview of Regional Studies of the Transport of Anthropogenic and Natural Contaminants to Public-Supply Wells in PDF format: Section 1|
|Download Section 2||Hydrogeologic Setting and Ground-Water Flow Simulations of the Salt Lake Valley Regional Study Area, Utah in PDF format: Section 2|
|Download Section 3||Hydrogeologic Settings and Ground-Water Flow Simulations of the Eagle Valley and Spanish Springs Valley Regional Study Areas, Nevada in PDF format: Section 3|
|Download Section 4||Hydrogeologic Setting and Ground-Water Flow Simulations of the San Joaquin Valley Regional Study Area, California in PDF format: Section 4|
|Download Section 5||Hydrogeologic Setting and Ground-Water Flow Simulations of the Northern Tampa Bay Regional Study Area, Florida in PDF format: Section 5|
|Download Section 6||Hydrogeologic Setting and Ground-Water Flow Simulations of the Pomperaug River Basin Regional Study Area, Connecticut in PDF format: Section 6|
|Download Section 7||Hydrogeologic Setting and Ground-Water Flow Simulations of the Great Miami River Basin Regional Study Area, Ohio in PDF format: Section 7|
|Download Section 8||Hydrogeologic Setting and Ground-Water Flow Simulations of the Eastern High Plains Regional Study Area, Nebraska in PDF format: Section 8|
|Download Appendix 1||Database Dictionary for the Study of Anthropogenic and Natural Contaminants in PDF format: Appendix 1|
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Paschke, Suzanne S., ed., 2007, Hydrogeologic settings and ground-water flow simulations for regional studies of the transport of anthropogenic and natural contaminants to public-supply wells—studies begun in 2001: U.S. Geological Survey Professional Paper 1737-A, 244 p.
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