MaryLynn Musgrove
MaryLynn Musgrove is a Research Physical Scientist and the Western Region Principal Aquifer Analyst for the National Water Quality Assessment (NAWQA) project. Her research interests include water quality, karst hydrology, and isotope geochemistry.
MaryLynn joined the USGS and Texas Water Science Center in 2006.
MaryLynn is currently a geochemist with the National Water Quality Assessment (NAWQA) project, acting as the Principal Aquifer Analyst for the Western U.S. region. Her research interests continue to address karst hydrology and carbonate aquifer geochemistry, with ongoing contributions to understanding the central Texas Edwards aquifer. She is also a Research Fellow at the University of Texas Environmental Science Institute where she regularly serves on the committees of graduate students.
Education and Certifications
MaryLynn has Masters and PhD degrees in Geological Sciences from the University of Texas at Austin, where she studied with Dr. Jay Banner.
Her graduate research focused on the application of geochemical tracers and environmental isotopes to karst aquifers, paleohydrology, and paleoclimate studies.
After completing her PhD in 2000, she completed postdoctoral work at Harvard University studying paleoclimate and links between science and policy.
Science and Products
Origin and characteristics of discharge at San Marcos Springs based on hydrologic and geochemical data (2008-10), Bexar, Comal, and Hays Counties, Texas
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers in the Pecos County region, Texas
Assessing the vulnerability of public-supply wells to contamination—Edwards aquifer near San Antonio, Texas
Simulations of groundwater flow and particle-tracking analysis in the zone of contribution to a public-supply well in San Antonio, Texas
Hydrogeology, chemical characteristics, and water sources and pathways in the zone of contribution of a public-supply well in San Antonio, Texas
Recent (2008-10) water quality in the Barton Springs segment of the Edwards aquifer and its contributing zone, central Texas, with emphasis on factors affecting nutrients and bacteria
Recent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone
Nitrate concentrations and potential sources in the Barton Springs segment of the Edwards aquifer and its contributing zone, Central Texas
Seasonal dripwater Mg/Ca and Sr/Ca variations driven by cave ventilation: Implications for and modeling of speleothem paleoclimate records
Geochemical evolution processes and water-quality observations based on results of the National Water-Quality Assessment Program in the San Antonio segment of the Edwards aquifer, Texas, 1996-2006
Zn and Cu isotopes as tracers of anthropogenic contamination in a sediment core from an urban lake
Physicochemical and analytical data for tributary water, lake water, and lake sediment, Lake Arrowhead, Clay and Archer Counties, Texas, 2006
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Origin and characteristics of discharge at San Marcos Springs based on hydrologic and geochemical data (2008-10), Bexar, Comal, and Hays Counties, Texas
The Edwards aquifer in south-central Texas is a productive and important water resource. Several large springs issuing from the aquifer are major discharge points, popular locations for recreational activities, and habitat for threatened and endangered species. Discharges from Comal and San Marcos Springs, the first and second largest spring complexes in Texas, are used as thresholds in groundwateAuthorsMaryLynn Musgrove, Cassi L. CrowA conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers in the Pecos County region, Texas
A conceptual model of the hydrogeologic framework, geochemistry, and groundwater-flow system of the Edwards-Trinity and related aquifers, which include the Pecos Valley, Igneous, Dockum, Rustler, and Capitan Reef aquifers, was developed as the second phase of a groundwater availability study in the Pecos County region in west Texas. The first phase of the study was to collect and compile groundwatAuthorsJohnathan R. Bumgarner, Gregory P. Stanton, Andrew Teeple, Jonathan V. Thomas, Natalie A. Houston, Jason Payne, MaryLynn MusgroveAssessing the vulnerability of public-supply wells to contamination—Edwards aquifer near San Antonio, Texas
This fact sheet highlights findings from the vulnerability study of a public-supply well field in San Antonio, Texas. The well field consists of six production wells that tap the Edwards aquifer. Typically, one or two wells are pumped at a time, yielding an average total of 20-21 million gallons per day. Water samples were collected from public-supply wells in the well field and from monitoring weAuthorsMartha L. Jagucki, MaryLynn Musgrove, Richard J. Lindgren, Lynne Fahlquist, Sandra M. EbertsSimulations of groundwater flow and particle-tracking analysis in the zone of contribution to a public-supply well in San Antonio, Texas
In 2006, a public-supply well in San Antonio, Texas, was selected for intensive study to assess the vulnerability of public-supply wells in the Edwards aquifer to contamination by a variety of compounds. A local-scale, steady-state, three-dimensional numerical groundwater-flow model was developed and used in this study to evaluate the movement of water and solutes from recharge areas to the selectAuthorsRichard L. Lindgren, Natalie A. Houston, MaryLynn Musgrove, Lynne S. Fahlquist, Leon J. KauffmanHydrogeology, chemical characteristics, and water sources and pathways in the zone of contribution of a public-supply well in San Antonio, Texas
In 2001, the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey initiated a series of studies on the transport of anthropogenic and natural contaminants (TANC) to public-supply wells (PSWs). The main goal of the TANC project was to better understand the source, transport, and receptor factors that control contaminant movement to PSWs in representative aquifers of the UAuthorsMaryLynn Musgrove, Lynne Fahlquist, Gregory P. Stanton, Natalie A. Houston, Richard J. LindgrenRecent (2008-10) water quality in the Barton Springs segment of the Edwards aquifer and its contributing zone, central Texas, with emphasis on factors affecting nutrients and bacteria
The Barton Springs zone, which comprises the Barton Springs segment of the Edwards aquifer and the watersheds to the west that contribute to its recharge, is in south-central Texas, an area with rapid growth in population and increasing amounts of land area affected by development. During November 2008-March 2010, an investigation of factors affecting the fate and transport of nutrients and bacterAuthorsBarbara Mahler, MaryLynn Musgrove, Thomas L. Sample, Corinne I. WongRecent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone
During 2008–10, the U.S. Geological Survey, in cooperation with the City of Austin, the City of Dripping Springs, the Barton Springs/Edwards Aquifer Conservation District, the Lower Colorado River Authority, Hays County, and Travis County, collected and analyzed water samples from five streams (Barton, Williamson, Slaughter, Bear, and Onion Creeks), two groundwater wells (Marbridge well [YD–58–50–AuthorsBarbara Mahler, MaryLynn Musgrove, Chris Herrington, Thomas L. SampleNitrate concentrations and potential sources in the Barton Springs segment of the Edwards aquifer and its contributing zone, Central Texas
The area contributing recharge to Barton Springs is undergoing rapid growth, accompanied by increased generation of wastewater. This study found that nitrate, a major component of wastewater and a nutrient that can degrade water quality, has increased in Barton Springs and the creeks that provide its recharge.AuthorsBarbara Mahler, MaryLynn Musgrove, Chris HerringtonSeasonal dripwater Mg/Ca and Sr/Ca variations driven by cave ventilation: Implications for and modeling of speleothem paleoclimate records
A 4-year study in a central Texas cave quantifies multiple mechanisms that control dripwater composition and how these mechanisms vary at different drip sites. We monitored cave-air compositions, in situ calcite growth, dripwater composition and drip rate every 4–6 weeks. Three groups of drip sites are delineated (Groups 1–3) based on geochemical variations in dripwater composition. Quantitative mAuthorsC.I. Wong, J.L. Banner, MaryLynn MusgroveGeochemical evolution processes and water-quality observations based on results of the National Water-Quality Assessment Program in the San Antonio segment of the Edwards aquifer, Texas, 1996-2006
As part of the National Water-Quality Assessment Program, the U.S. Geological Survey collected and analyzed groundwater samples during 1996-2006 from the San Antonio segment of the Edwards aquifer of central Texas, a productive karst aquifer developed in Cretaceous-age carbonate rocks. These National Water-Quality Assessment Program studies provide an extensive dataset of groundwater geochemistryAuthorsMaryLynn Musgrove, Lynne Fahlquist, Natalie A. Houston, Richard J. Lindgren, Patricia B. GingZn and Cu isotopes as tracers of anthropogenic contamination in a sediment core from an urban lake
In this work, we use stable Zn and Cu isotopes to identify the sources and timing of the deposition of these metals in a sediment core from Lake Ballinger near Seattle, Washington, USA. The base of the Lake Ballinger core predates settlement in the region, while the upper sections record the effects of atmospheric emissions from a nearby smelter and rapid urbanization of the watershed. δ66Zn and δAuthorsAnita Thapalia, David M. Borrok, Peter C. Van Metre, MaryLynn Musgrove, Edward R. LandaPhysicochemical and analytical data for tributary water, lake water, and lake sediment, Lake Arrowhead, Clay and Archer Counties, Texas, 2006
Lake Arrowhead is a reservoir about 24 kilometers southeast of Wichita Falls, Texas, that provides drinking water for the city of Wichita Falls and surrounding areas. The U.S. Geological Survey, in cooperation with the City of Wichita Falls, did a study in 2006 to assess conditions contributing to elevated arsenic concentrations in Lake Arrowhead. This report describes the sampling and analyticalAuthorsJennifer T. Wilson, MaryLynn Musgrove, Monti M. Haynie, Peter C. Van Metre - News