World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
44
Citations
8738
World Ranking
4650
National Ranking
1775

Overview

Peter B. McMahon is affiliated with the United States Geological Survey in the United States. Their research primarily focuses on environmental science and engineering, engaging extensively in subfields such as global and planetary change, mechanics of materials, geochemistry and petrology, environmental engineering, and environmental chemistry.

The scientist's work covers a broad spectrum of topics within environmental and earth sciences. Key areas of research include:

  • Atmospheric and Environmental Gas Dynamics
  • Hydrocarbon exploration and reservoir analysis
  • Groundwater and Isotope Geochemistry
  • Groundwater flow and contamination studies
  • Geochemistry and Geologic Mapping
  • Fluoride Effects and Removal
  • Water Quality and Resources Studies

Peter B. McMahon has contributed to numerous scientific publications, frequently appearing in journals such as The Science of The Total Environment, Applied Geochemistry, and Chemical Geology. The following are selected recent papers authored by them:

  • "Perfluoroalkyl and Polyfluoroalkyl Substances in Groundwater Used as a Source of Drinking Water in the Eastern United States," 2022, Environmental Science & Technology
  • "Fluoride occurrence in United States groundwater," 2020, The Science of The Total Environment

The scientist often collaborates with several coauthors, including Andrew G. Hunt, Justin T. Kulongoski, Janice M. Gillespie, David H. Shimabukuro, and Tracy A. Davis. These collaborative efforts contribute to the breadth and depth of research output spanning multiple related topics and fields.

Peter B. McMahon's frequent publication venues reflect a focus on environmental and earth sciences, with a measurable presence in journals and reports such as The Science of The Total Environment, Applied Geochemistry, Chemical Geology, Antarctica A Keystone in a Changing World, and Scientific Investigations Report.

Best Publications

  • Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley

    Bridget R. Scanlon;Claudia C. Faunt;Laurent Longuevergne;Robert C. Reedy

  • Redox Processes and Water Quality of Selected Principal Aquifer Systems

    P.B. McMahon;F.H. Chapelle

  • Deducing the Distribution of Terminal Electron‐Accepting Processes in Hydrologically Diverse Groundwater Systems

    Francis H. Chapelle;Peter B. McMahon;Neil M. Dubrovsky;Roger F. Fujii

  • Microbial production of organic acids in aquitard sediments and its role in aquifer geochemistry

    Peter B. McMahon;Francis H. Chapelle

  • Climate Variability Controls on Unsaturated Water and Chemical Movement, High Plains Aquifer, USA

    Jason J. Gurdak;Randall T. Hanson;Peter B. McMahon;Breton W. Bruce

  • Effect of nitrate, organic carbon, and temperature on potential denitrification rates in nitrate-rich riverbed sediments

    Unknown

  • Geochemistry of dissolved inorganic carbon in a Coastal Plain aquifer. 1. Sulfate from confining beds as an oxidant in microbial CO2 production

    Francis H. Chapelle;Peter B. McMahon

  • Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States

    P. B. McMahon;K. F. Dennehy;B. W. Bruce;J. K. Böhlke

  • N2O Emissions from a Nitrogen-Enriched River

    P.B. McMahon;K.F. Dennehy

  • Denitrification and mixing in a stream—aquifer system: effects on nitrate loading to surface water

    P.B. McMahon;J.K. Böhlke

  • A comparison of recharge rates in aquifers of the United States based on groundwater-age data

    P. B. McMahon;L. N. Plummer;J. K. Böhlke;S. D. Shapiro

  • Geochemistry, radiocarbon ages, and paleorecharge conditions along a transect in the central High Plains aquifer, southwestern Kansas, USA

    P.B. McMahon;J.K. Böhlke;S.C. Christenson

  • Elevated Manganese Concentrations in United States Groundwater, Role of Land Surface-Soil-Aquifer Connections.

    Peter B. McMahon;Kenneth Belitz;James E. Reddy;Tyler D. Johnson

  • Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators.

    Paul M. Bradley;Larry B. Barber;Dana W. Kolpin;Peter B. McMahon

  • Using chemical, hydrologic, and age dating analysis to delineate redox processes and flow paths in the riparian zone of a glacial outwash aquifer-stream system

    Larry J. Puckett;Timothy K. Cowdery;Peter B. McMahon;Lan H. Tornes

  • Fate of effluent-borne contaminants beneath septic tank drainfields overlying a Karst aquifer.

    Brian G. Katz;Dale W. Griffin;Peter B. McMahon;Harmon S. Harden

  • Biodegradation of 17β-Estradiol, Estrone and Testosterone in Stream Sediments

    Paul M. Bradley;Larry B. Barber;Francis H. Chapelle;James L. Gray

  • Brackish groundwater in the United States

    Jennifer S. Stanton;David W. Anning;Craig J. Brown;Richard B. Moore

  • Source and transport controls on the movement of nitrate to public supply wells in selected principal aquifers of the United States

    P. B. McMahon;J. K. Böhlke;L. J. Kauffman;K. L. Kipp

  • The quality of our Nation's waters: water quality in Principal Aquifers of the United States, 1991-2010

    Leslie A. DeSimone;Peter B. McMahon;Michael R. Rosen

  • Regional patterns in the isotopic composition of natural and anthropogenic nitrate in groundwater, high plains, U.S.A

    P. B. McMahon;J. K. Bohlke

Frequent Co-Authors

Francis H. Chapelle
Francis H. Chapelle United States Geological Survey
Andrew G. Hunt
Andrew G. Hunt United States Geological Survey
Paul M. Bradley
Paul M. Bradley United States Geological Survey
John Karl Böhlke
John Karl Böhlke United States Geological Survey
Kenneth Belitz
Kenneth Belitz United States Geological Survey
Mark A. Engle
Mark A. Engle The University of Texas at El Paso
Larry B. Barber
Larry B. Barber United States Geological Survey
Dana W. Kolpin
Dana W. Kolpin United States Geological Survey
Avner Vengosh
Avner Vengosh Duke University
James T. Morris
James T. Morris University of South Carolina

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