Explanipedia

Assessing potential effects of oil and gas development activities on groundwater quality near and overlying the Elk Hills and North Coles Levee Oil Fields, San Joaquin Valley, California Open

John G. Warden, Matthew K. Landon, Michael J. Stephens, Tracy A. Davis, Janice M. Gillespie , et al. · 2024

Groundwater resources are utilized near areas of intensive oil and gas development in California’s San Joaquin Valley. In this study, we examined chemical and isotopic data to assess if thermogenic gas or saline water from oil producing fo…

Land-use interactions, Oil-Field infrastructure, and natural processes control hydrocarbon and arsenic concentrations in groundwater, Poso Creek Oil Field, California, USA Open

Peter B. McMahon, Matthew K. Landon, Michael J. Stephens, Kim A. Taylor, Michael T. Wright , et al. · 2024

Like many hydrocarbon production areas in the U.S., the Poso Creek Oil Field in California includes and is adjacent to other land uses (agricultural and other developed lands) that affect the hydrology and geochemistry of the aquifer overl…

Spectral characterization of dissolved organic matter in groundwater to assess mixing with oil-field water near selected oil fields, southern California Open

Angela M. Hansen, Tamara E. C. Kraus, Matthew K. Landon, Peter B. McMahon · 2023

Samples of oil-field water (oil wells, injectate, disposal ponds) and groundwater near selected oil and gas fields in southern California were analyzed for dissolved organic carbon (DOC) concentration and by optical spectroscopic technique…

Fluid migration pathways to groundwater in mature oil fields: Exploring the roles of water injection/production and oil-well integrity in California, USA Open

Peter B. McMahon, Mathew K. Landon, Michael J. Stephens, Kim A. Taylor, Janice M. Gillespie , et al. · 2023

Mature oil fields potentially contain multiple fluid migration pathways toward protected groundwater (total dissolved solids, TDS, in nonexempted aquifer <10,000 mg/L) because of their extensive development histories. Time-series data for …

Multiple-well monitoring site within the Poso Creek Oil Field, Kern County, California Open

Rhett R. Everett, Peter B. McMahon, Michael J. Stephens, Janice M. Gillespie, M. Shepherd , et al. · 2023

First posted July 12, 2023 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 The Poso Creek Oil Field is one of the many fields selecte…

Groundwater quality near the Montebello Oil Field, Los Angeles County, California Open

Jennifer S. Stanton, Michael Land, Matthew K. Landon, David H. Shimabukuro, Peter B. McMahon , et al. · 2023

First posted February 6, 2023 For additional information, contact: Director, California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 Groundwater quality and potential sources and migratio…

Over a third of groundwater in USA public-supply aquifers is Anthropocene-age and susceptible to surface contamination Open

Bryant C. Jurgens, Kirsten E. Faulkner, Peter B. McMahon, Andrew G. Hunt, Gerolamo C. Casile , et al. · 2022

The distribution of groundwater age is useful for evaluating the susceptibility and sustainability of groundwater resources. Here, we compute the aquifer-scale cumulative distribution function to characterize the age distribution for 21 Pr…

Occurrence of water and thermogenic gas from oil-bearing formations in groundwater near the Orcutt Oil Field, California, USA Open

Robert A. Anders, Matthew K. Landon, Peter B. McMahon, Justin T. Kulongoski, Andrew G. Hunt , et al. · 2022

Study region: Santa Barbara County, California, USA. Study focus: To analyze a wide array of newly collected chemical, isotopic, dissolved gas, and age dating tracers in conjunction with historical data from groundwater and oil wells to de…

Perfluoroalkyl and Polyfluoroalkyl Substances in Groundwater Used as a Source of Drinking Water in the Eastern United States Open

Peter B. McMahon, Andrea K. Tokranov, Laura M. Bexfield, Bruce D. Lindsey, Tyler D. Johnson , et al. · 2022

In 2019, 254 samples were collected from five aquifer systems to evaluate perfluoroalkyl and polyfluoroalkyl substance (PFAS) occurrence in groundwater used as a source of drinking water in the eastern United States. The samples were analy…

Noble gas signatures constrain oil-field water as the carrier phase of hydrocarbons occurring in shallow aquifers in the San Joaquin Basin, USA Open

Rūta Karolytė, Peter H. Barry, Andrew G. Hunt, Justin T. Kulongoski, Rebecca Tyne , et al. · 2021

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Karolyte, R., Barry, P. H., Hunt, A. G., Kulongoski, J. T., Tyne, R. L., Davis, T. A., …

Relative risk of groundwater-quality degradation near California (USA) oil fields estimated from 3H, 14C, and 4He Open

Peter B. McMahon, Mathew K. Landon, Tracy A. Davis, Michael T. Wright, Celia Z. Rosecrans , et al. · 2021

Relative risks of groundwater-quality degradation near selected California oil fields are estimated by examining spatial and temporal patterns in chemical and isotopic data in the context of groundwater-age categories defined by tritium an…

Groundwater Quality of Aquifers Overlying the Oxnard Oil Field, Ventura County, California Open

Celia Z. Rosecrans, Mathew K. Landon, Peter B. McMahon, Janice M. Gillespie, Justin T. Kulongoski , et al. · 2021

Groundwater samples collected from irrigation, monitoring, and municipal supply wells near the Oxnard Oil Field were analyzed for chemical and isotopic tracers to evaluate if thermogenic gas or water from hydrocarbon-bearing formations hav…

Origin and geochemistry of formation waters from the lower Eagle Ford Group, Gulf Coast Basin, south central Texas Open

Mark A. Engle, Colin A. Doolan, Janet A. Pitman, Matthew S. Varonka, Jessica Chenault , et al. · 2020

The lower Eagle Ford Group (LEFG) is one of the most productive continuous hydrocarbon plays in the United States but few associated produced waters data and minimal interpretation have been published. This effort focuses on results from c…

Multiple-well monitoring site adjacent to the Lost Hills oil field, Kern County, California Open

Rhett R. Everett, Adam Kjos, Anthony Brown, Janice M. Gillespie, Peter B. McMahon · 2020

First posted February 21, 2020 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 The U.S. Geological Survey (USGS), in cooperation with…

Between Species/Between Spaces: Art and Science on the Outer Cape Open

Kendra Sullivan, Dylan Gauthier, Mark Adams, Jean Barberis, Joshua S. Edwards , et al. · 2020

Between Species/Between Spaces assembles text and images resulting from a pilot artistic research residency hosted by the Cape Cod Modern House Trust and the Cape Cod National Seashore in Cape Cod, MA. Artists in the book reflect on the ge…

Author Correction: Methane emissions from groundwater pumping in the USA Open

Justin T. Kulongoski, Peter B. McMahon · 2019

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Occurrence and Sources of Radium in Groundwater Associated with Oil Fields in the Southern San Joaquin Valley, California Open

Peter B. McMahon, Avner Vengosh, Tracy A. Davis, Matthew K. Landon, Rebecca Tyne , et al. · 2019

Geochemical data from 40 water wells were used to examine the occurrence and sources of radium (Ra) in groundwater associated with three oil fields in California (Fruitvale, Lost Hills, South Belridge). ²²⁶Ra+²²⁸Ra ac…

Groundwater quality of a public supply aquifer in proximity to oil development, Fruitvale oil field, Bakersfield, California Open

Michael T. Wright, Peter B. McMahon, Matthew K. Landon, Justin T. Kulongoski · 2019

Due to concerns over the effects of oil production activities on groundwater quality in California, chemical, isotopic, dissolved gas and age-dating tracers were analyzed in samples collected from public-supply wells and produced-water sit…

Methane emissions from groundwater pumping in the USA Open

Justin T. Kulongoski, Peter B. McMahon · 2019

Atmospheric methane accumulation contributes to climate change, hence quantifying methane emissions is essential to assess and model the impacts. Here, we estimate methane emissions from groundwater pumping in the Los Angeles Basin (LAB), …

Groundwater quality and hydrology with emphasis on selenium mobilization and transport in the Lower Gunnison River Basin, Colorado, 2012–16 Open

Judith C. Thomas, Peter B. McMahon, L. Rick Arnold · 2019

First posted June 28, 2019 For additional information, contact: Director, Colorado Water Science CenterU.S. Geological SurveyBox 25046, MS-415Denver, CO 80225-0046 Dissolved selenium is a contaminant of concern in the lower Gunnison River …

Regional patterns in the geochemistry of oil-field water, southern San Joaquin Valley, California, USA Open

Peter B. McMahon, Justin T. Kulongoski, Avner Vengosh, Isabelle M. Cozzarelli, Matthew K. Landon , et al. · 2018

Chemical and isotopic data for water co-extracted with hydrocarbons in oil and gas fields are commonly used to examine the source of the formation water and possible impacts on groundwater in areas of oil and gas development. Understanding…

Groundwater chemistry and water-level elevations in bedrock aquifers of the Piceance and Yellow Creek watersheds, Rio Blanco County, Colorado, 2013–16 Open

Judith C. Thomas, Peter B. McMahon · 2018

First posted November 21, 2018 For additional information, contact: Director, Colorado Water Science CenterU.S. Geological SurveyBox 25046, MS 415Denver, CO 80225 The Piceance and Yellow Creek watersheds in Rio Blanco County, Colorado, are…

Computer simulation of mass transport in groundwater : affect of macroscopic heterogeneities in hydraulic conductivity Open

Peter B. McMahon · 2017

In this study a computer model was used to simulate dissolved chloride movement through alluvial sediments which border the Canadian River in Hutchinson County, Texas. Hydraulic conductivity values of the sediments were required in order t…

Response of selenium concentrations in groundwater to seasonal canal leakage, lower Gunnison River Basin, Colorado, 2013 Open

Joshua Linard, Peter B. McMahon, L. Rick Arnold, Judith C. Thomas · 2016

First posted May 23, 2016 Revised January 13, 2017 For additional information, contact: Director, USGS Colorado Water Science CenterBox 25046, Mail Stop 415Denver, CO 80225http://co.water.usgs.gov/ Selenium is a water-quality concern in th…

Preliminary results from exploratory sampling of wells for the California oil, gas, and groundwater program, 2014–15 Open

Peter B. McMahon, Justin T. Kulongoski, Michael T. Wright, Michael Land, Matthew K. Landon , et al. · 2016

First posted August 3, 2016 Revised January 31, 2017 For additional information, contact: Director, California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819http://ca.water.usgs.gov In 2014…

Produced water chemistry for samples from four petroleum wells, southern San Joaquin Valley, California, 2014 Open

Tracy A. Davis, Justin T. Kulongoski, Peter B. McMahon · 2016

The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board collected produced water samples from four petroleum wells in the southern San Joaquin Valley on November 5, 2014. This digital datase…

The water-energy nexus: an earth science perspective Open

Richard W. Healy, William M. Alley, Mark A. Engle, Peter B. McMahon, Jerad Bales · 2015

Water availability and use are closely connected with energy development and use. Water cannot be delivered to homes, businesses, and industries without energy, and most forms of energy development require large amounts of water. The Unite…

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