Skip to main content
U.S. flag

An official website of the United States government

Erin Gray

Erin is a Hydrologist at the New Mexico Water Science Center. Since joining the New Mexico Water Science Center in 2019, Erin has been a part of the Water Sustainability Unit, where she relies on her background in geochemistry and mapping to support various projects.

Professional Experience

  • January 2019 to present: hydrologist, U.S. Geological Survey, New Mexico Water Science Center, Albuquerque, New Mexico

    August 2017 to December 2019: engineering associate, Tucson Water, Tucson, Arizona

     

Education and Certifications

  • M.S. Hydrology, University of Arizona, 2018

    B.S. Environmental Hydrology, University of Arizona, 2017

     

Science and Products

PFAS Snow Sampling

Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Per- and polyfluoroalkyl substances (PFAS) are widespread anthropogenic chemicals that have been in use for the past 70 years. This class of compounds comprises thousands of chemicals including perfluorosulfonates (PFSAs) such as perfluorooctane sulfonate (PFOS), perfluorocarboxylic acids (PFCAs), and perfluorooctanoic acid (PFOA). As the use of these chemicals has grown so has their ubiquity in...
By
New Mexico Water Science Center
Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Per- and polyfluoroalkyl substances (PFAS) are widespread anthropogenic chemicals that have been in use for the past 70 years. This class of compounds comprises thousands of chemicals including perfluorosulfonates (PFSAs) such as perfluorooctane sulfonate (PFOS), perfluorocarboxylic acids (PFCAs), and perfluorooctanoic acid (PFOA). As the use of these chemicals has grown so has their ubiquity in...
Learn More

Water, sediment, and rock chemistry data from within and near the Florida River watershed in southern Colorado, April, May, and August–September, 2022 Water, sediment, and rock chemistry data from within and near the Florida River watershed in southern Colorado, April, May, and August–September, 2022

This data release is composed of several datasets that contain water, sediment, and rock chemistry results from samples collected within and near the Florida River watershed in southern Colorado. Samples were collected during three sampling events in April 2022, May 2022, and August–September 2022. The data will aid investigators in understanding the sources and seasonality of aluminum...
By
New Mexico Water Science Center

Lagrangian water quality monitoring of the Animas River: Data release from a sonde-equipped raft sampling campaign that occurred on the Animas River between Trimble, CO to Farmington, NM in June, 2022 Lagrangian water quality monitoring of the Animas River: Data release from a sonde-equipped raft sampling campaign that occurred on the Animas River between Trimble, CO to Farmington, NM in June, 2022

The purpose of this data release is to provide water quality data that were collected during a raft sampling campaign near USGS streamgage 372728107475701 (Animas River at Bakers Bridge north of Durango, CO) to USGS streamgage 09364500 (Animas River at Farmington, NM) between the dates 06/06/2022 and 06/10/2022. Chemical and physical parameters were collected at 1-minute intervals with...
By
New Mexico Water Science Center

Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico

This U.S. Geological Survey (USGS) data release contains push-pull test results, Darcy velocity data, and contaminant mass flux data measured in Albuquerque, New Mexico, using passive flux meters (PFMs) in monitoring and sentinel wells associated with the Kirtland Air Force Base (KAFB) Bulk Fuels Facility (BFF). Push-pull test results were used to correct Darcy velocity data collected at...
By
New Mexico Water Science Center

Darcy flux and PFAS mass flux in groundwater at Cannon Air Force Base, Clovis, NM Darcy flux and PFAS mass flux in groundwater at Cannon Air Force Base, Clovis, NM

This United States Geological Survey (USGS) data release contains Darcy flux and mass flux of per- and polyfluoroalkyl substances (PFAS) measured using passive flux meters (PFMs) in monitoring wells associated with the Cannon Air Force Base (CAFB) in Clovis, New Mexico. The measurements were conducted by the USGS in cooperation with CAFB, the Air Force Civil Engineer Center, AECOM (an...
By
New Mexico Water Science Center

Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico

This U.S. Geological Survey (USGS) data release contains push-pull test results, Darcy velocity data, and contaminant mass flux data measured in Albuquerque, New Mexico, using passive flux meters (PFMs) in monitoring and sentinel wells associated with the Kirtland Air Force Base (KAFB) Bulk Fuels Facility. Push-pull test results were used to correct Darcy velocity data collected at large...
By
New Mexico Water Science Center

Geochemical and hydrological investigations of historical data collected at the Lee Acres Landfill and Giant Bloomfield Refinery, New Mexico, 1985–2020 Geochemical and hydrological investigations of historical data collected at the Lee Acres Landfill and Giant Bloomfield Refinery, New Mexico, 1985–2020

The Lee Acres Landfill and Giant Bloomfield Refinery are adjacent properties near the City of Farmington, New Mexico, each having undergone monitoring and remediation related to historical site activities. At the landfill, site cleanup has included the installation of a capillary barrier over former liquid waste lagoons and periodic monitoring of groundwater elevations and groundwater...
Authors
Erin L. Gray, Christina L. Ferguson
By
New Mexico Water Science Center

Sources of water and salts for the Zuni Salt Lake in west-central New Mexico Sources of water and salts for the Zuni Salt Lake in west-central New Mexico

The Zuni Salt Lake is located in a maar in west-central New Mexico and contains hypersaline water that has long been used by Native Americans for religious purposes and the collection of salt. There have been several investigations suggesting different sources for the water and salt to the lake. Springs, seeps, and ephemeral streamflow have all been observed to contribute freshwater to...
Authors
Andrew J. Robertson, Jeff D. Pepin, Erin L. Gray, Jake W. Collison, Jeb E. Brown, Andre Ritchie, Grady Ball
By
New Mexico Water Science Center

Per- and polyfluoroalkyl substances (PFAS) mass flux and mass balance at an aqueous film-forming foam release site in semiarid eastern New Mexico, USA Per- and polyfluoroalkyl substances (PFAS) mass flux and mass balance at an aqueous film-forming foam release site in semiarid eastern New Mexico, USA

Passive flux meters (PFMs) directly measure groundwater chemistry mass flux and Darcy flux, providing insight into contaminant source-zone architecture and transport properties. This study uses PFMs to characterize PFAS flux in groundwater at a semiarid site with a thick (greater than 90-m) unsaturated zone where groundwater has been contaminated with per- and polyfluoroalkyl substances...
Authors
Erin Louise Gray, Samuel Edwin Potteiger, Trevor Dylan Brannon, Stuart Bryan Norton, Jay Cho, Michael D. Annable
By
New Mexico Water Science Center

Database of water quality and groundwater elevation within and surrounding the Lee Acres Landfill, New Mexico, 1985–2020 Database of water quality and groundwater elevation within and surrounding the Lee Acres Landfill, New Mexico, 1985–2020

This report describes the background information related to and the contents of the Lee Acres-Giant Bloomfield Refinery Database (LAGBRD), which is a compilation of monitoring data collected at the Lee Acres Landfill and the Giant Bloomfield Refinery near Farmington, New Mexico. LAGBRD includes monitoring data from as early as 1985, when awareness was increasing regarding contamination...
Authors
Erin L. Gray, Christina L. Ferguson
By
Water Resources Mission Area, New Mexico Water Science Center

Science and Products

PFAS Snow Sampling

Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Per- and polyfluoroalkyl substances (PFAS) are widespread anthropogenic chemicals that have been in use for the past 70 years. This class of compounds comprises thousands of chemicals including perfluorosulfonates (PFSAs) such as perfluorooctane sulfonate (PFOS), perfluorocarboxylic acids (PFCAs), and perfluorooctanoic acid (PFOA). As the use of these chemicals has grown so has their ubiquity in...
By
New Mexico Water Science Center
Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Assessment of Per- and Polyfluoroalkyl Substances in Water Resources of New Mexico

Per- and polyfluoroalkyl substances (PFAS) are widespread anthropogenic chemicals that have been in use for the past 70 years. This class of compounds comprises thousands of chemicals including perfluorosulfonates (PFSAs) such as perfluorooctane sulfonate (PFOS), perfluorocarboxylic acids (PFCAs), and perfluorooctanoic acid (PFOA). As the use of these chemicals has grown so has their ubiquity in...
Learn More

Water, sediment, and rock chemistry data from within and near the Florida River watershed in southern Colorado, April, May, and August–September, 2022 Water, sediment, and rock chemistry data from within and near the Florida River watershed in southern Colorado, April, May, and August–September, 2022

This data release is composed of several datasets that contain water, sediment, and rock chemistry results from samples collected within and near the Florida River watershed in southern Colorado. Samples were collected during three sampling events in April 2022, May 2022, and August–September 2022. The data will aid investigators in understanding the sources and seasonality of aluminum...
By
New Mexico Water Science Center

Lagrangian water quality monitoring of the Animas River: Data release from a sonde-equipped raft sampling campaign that occurred on the Animas River between Trimble, CO to Farmington, NM in June, 2022 Lagrangian water quality monitoring of the Animas River: Data release from a sonde-equipped raft sampling campaign that occurred on the Animas River between Trimble, CO to Farmington, NM in June, 2022

The purpose of this data release is to provide water quality data that were collected during a raft sampling campaign near USGS streamgage 372728107475701 (Animas River at Bakers Bridge north of Durango, CO) to USGS streamgage 09364500 (Animas River at Farmington, NM) between the dates 06/06/2022 and 06/10/2022. Chemical and physical parameters were collected at 1-minute intervals with...
By
New Mexico Water Science Center

Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico

This U.S. Geological Survey (USGS) data release contains push-pull test results, Darcy velocity data, and contaminant mass flux data measured in Albuquerque, New Mexico, using passive flux meters (PFMs) in monitoring and sentinel wells associated with the Kirtland Air Force Base (KAFB) Bulk Fuels Facility (BFF). Push-pull test results were used to correct Darcy velocity data collected at...
By
New Mexico Water Science Center

Darcy flux and PFAS mass flux in groundwater at Cannon Air Force Base, Clovis, NM Darcy flux and PFAS mass flux in groundwater at Cannon Air Force Base, Clovis, NM

This United States Geological Survey (USGS) data release contains Darcy flux and mass flux of per- and polyfluoroalkyl substances (PFAS) measured using passive flux meters (PFMs) in monitoring wells associated with the Cannon Air Force Base (CAFB) in Clovis, New Mexico. The measurements were conducted by the USGS in cooperation with CAFB, the Air Force Civil Engineer Center, AECOM (an...
By
New Mexico Water Science Center

Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico Passive flux meter data from monitoring wells and sentinel wells in relation to the Kirtland Air Force Base Bulk Fuels Facility, Albuquerque, New Mexico

This U.S. Geological Survey (USGS) data release contains push-pull test results, Darcy velocity data, and contaminant mass flux data measured in Albuquerque, New Mexico, using passive flux meters (PFMs) in monitoring and sentinel wells associated with the Kirtland Air Force Base (KAFB) Bulk Fuels Facility. Push-pull test results were used to correct Darcy velocity data collected at large...
By
New Mexico Water Science Center

Geochemical and hydrological investigations of historical data collected at the Lee Acres Landfill and Giant Bloomfield Refinery, New Mexico, 1985–2020 Geochemical and hydrological investigations of historical data collected at the Lee Acres Landfill and Giant Bloomfield Refinery, New Mexico, 1985–2020

The Lee Acres Landfill and Giant Bloomfield Refinery are adjacent properties near the City of Farmington, New Mexico, each having undergone monitoring and remediation related to historical site activities. At the landfill, site cleanup has included the installation of a capillary barrier over former liquid waste lagoons and periodic monitoring of groundwater elevations and groundwater...
Authors
Erin L. Gray, Christina L. Ferguson
By
New Mexico Water Science Center

Sources of water and salts for the Zuni Salt Lake in west-central New Mexico Sources of water and salts for the Zuni Salt Lake in west-central New Mexico

The Zuni Salt Lake is located in a maar in west-central New Mexico and contains hypersaline water that has long been used by Native Americans for religious purposes and the collection of salt. There have been several investigations suggesting different sources for the water and salt to the lake. Springs, seeps, and ephemeral streamflow have all been observed to contribute freshwater to...
Authors
Andrew J. Robertson, Jeff D. Pepin, Erin L. Gray, Jake W. Collison, Jeb E. Brown, Andre Ritchie, Grady Ball
By
New Mexico Water Science Center

Per- and polyfluoroalkyl substances (PFAS) mass flux and mass balance at an aqueous film-forming foam release site in semiarid eastern New Mexico, USA Per- and polyfluoroalkyl substances (PFAS) mass flux and mass balance at an aqueous film-forming foam release site in semiarid eastern New Mexico, USA

Passive flux meters (PFMs) directly measure groundwater chemistry mass flux and Darcy flux, providing insight into contaminant source-zone architecture and transport properties. This study uses PFMs to characterize PFAS flux in groundwater at a semiarid site with a thick (greater than 90-m) unsaturated zone where groundwater has been contaminated with per- and polyfluoroalkyl substances...
Authors
Erin Louise Gray, Samuel Edwin Potteiger, Trevor Dylan Brannon, Stuart Bryan Norton, Jay Cho, Michael D. Annable
By
New Mexico Water Science Center

Database of water quality and groundwater elevation within and surrounding the Lee Acres Landfill, New Mexico, 1985–2020 Database of water quality and groundwater elevation within and surrounding the Lee Acres Landfill, New Mexico, 1985–2020

This report describes the background information related to and the contents of the Lee Acres-Giant Bloomfield Refinery Database (LAGBRD), which is a compilation of monitoring data collected at the Lee Acres Landfill and the Giant Bloomfield Refinery near Farmington, New Mexico. LAGBRD includes monitoring data from as early as 1985, when awareness was increasing regarding contamination...
Authors
Erin L. Gray, Christina L. Ferguson
By
Water Resources Mission Area, New Mexico Water Science Center
Was this page helpful?