Source to Outcome Research Framework that was updated from the 2022 Source to Receptor Research Framework
Stephanie Gordon
Stephanie is a Physical Scientist at the Eastern Ecological Science Center in Kearneysville, WV.
Stephanie started with the USGS as a volunteer with the Eastern Geographic Science Center in 2015 working on the Sediment-bound Contaminant Resiliency and Response (SCoRR) project and has since worked on a diverse variety of projects. Her research includes using geospatial tools to quantify landscape contaminant sources and understand relationships to biological endpoints. This work has focused on landscape sources of endocrine disrupting compounds in the Chesapeake Bay Watershed and their relationship to fish health and water quality; data management and mapping support for USGS Chesapeake Bay activities; and includes similar work on harmful algal blooms and shallow well contamination at national and regional scales.
Professional Experience
2018 to present: Geographer, U.S. Geological Survey, Leetown Science Center, Kearneysville, West Virginia
2015 to 2017: Student Contractor – Geography, U.S. Geological Survey, Eastern Geographic Science Center, Reston, Virginia
Education and Certifications
M.S., 2019, George Mason University, Fairfax, VA Thesis: Population Dynamics and Pharmaceutical Contamination in Streams and Rivers Across the United States
B.A., 2013, James Madison University, Harrisonburg, VA
Science and Products
Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community
Public, bottled, and private drinking water: Shared contaminant-mixture exposures and effects challenge Public, bottled, and private drinking water: Shared contaminant-mixture exposures and effects challenge
Tissue distribution and temporal and spatial assessment of per- and polyfluoroalkyl substances (PFAS) in smallmouth bass (Micropterus dolomieu) in the mid-Atlantic United States Tissue distribution and temporal and spatial assessment of per- and polyfluoroalkyl substances (PFAS) in smallmouth bass (Micropterus dolomieu) in the mid-Atlantic United States
Mixed contaminant exposure in tapwater and the potential implications for human-health in disadvantaged communities in California Mixed contaminant exposure in tapwater and the potential implications for human-health in disadvantaged communities in California
Temporal analysis of water chemistry and smallmouth bass (Micropterus dolomieu) health at two sites with divergent land use in the Susquehanna River watershed, Pennsylvania, USA Temporal analysis of water chemistry and smallmouth bass (Micropterus dolomieu) health at two sites with divergent land use in the Susquehanna River watershed, Pennsylvania, USA
Tire-derived contaminants 6PPD and 6PPD-Q: Analysis, sample handling, and reconnaissance of United States stream exposures Tire-derived contaminants 6PPD and 6PPD-Q: Analysis, sample handling, and reconnaissance of United States stream exposures
Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications
Exposures and potential health implications of contaminant mixtures in linked source water, finished drinking water, and tapwater from public-supply drinking water systems in Minneapolis/St. Paul area, USA Exposures and potential health implications of contaminant mixtures in linked source water, finished drinking water, and tapwater from public-supply drinking water systems in Minneapolis/St. Paul area, USA
Predicted aquatic exposure effects from a national urban stormwater study Predicted aquatic exposure effects from a national urban stormwater study
Bottled water contaminant exposures and potential human effects Bottled water contaminant exposures and potential human effects
A case study: Temporal trends of environmental stressors and reproductive health of smallmouth bass (Micropterus dolomieu) from a site in the Potomac River Watershed, Maryland, USA A case study: Temporal trends of environmental stressors and reproductive health of smallmouth bass (Micropterus dolomieu) from a site in the Potomac River Watershed, Maryland, USA
Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed
Geospatial Analyses and Applications Core Technology Team
USGS Scientists Develop an Interactive Mapping Tool to Visualize PFAS in Tap Water
Agricultural best management practices can improve water quality and conditions for fisheries in the Chesapeake Bay Watershed
USGS Integrates Findings about Endocrine-Disrupting Compounds in the Chesapeake Watershed
Endocrine Disrupting Compounds in the Chesapeake Bay Watershed Science Team
Data for the Potomac River Watershed Accumulated Wastewater Viewer Data for the Potomac River Watershed Accumulated Wastewater Viewer
“DelRiv 24k – LU": Land Use/Land Cover Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments “DelRiv 24k – LU": Land Use/Land Cover Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments
“DelRiv 24k – NE": Natural Environment Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments “DelRiv 24k – NE": Natural Environment Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments
Estimated Densities of Residential Septic Tanks across the Conterminous United States for HUC12, NHDV2 Catchment, and Block Group Scales Estimated Densities of Residential Septic Tanks across the Conterminous United States for HUC12, NHDV2 Catchment, and Block Group Scales
Landscape data compiled for fish health sites in and around the Chesapeake Bay Watershed. Landscape data compiled for fish health sites in and around the Chesapeake Bay Watershed.
Water Chemistry and Smallmouth Bass Biological Data from Pine Creek and West Branch Mahantango Creek, Pennsylvania, 2015-2019 Water Chemistry and Smallmouth Bass Biological Data from Pine Creek and West Branch Mahantango Creek, Pennsylvania, 2015-2019
“ChesBay 24k – LU": Land Use/Land Cover Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.0, October 2024) “ChesBay 24k – LU": Land Use/Land Cover Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.0, October 2024)
“ChesBay 24k – NE": Natural Environment Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025) “ChesBay 24k – NE": Natural Environment Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025)
“ChesBay 24k – CL": Climate Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025) “ChesBay 24k – CL": Climate Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025)
“ChesBay 24k – HU": Human Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.1, March 2025) “ChesBay 24k – HU": Human Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.1, March 2025)
PFAS Reconnaissance Landscape Data PFAS Reconnaissance Landscape Data
Water Chemistry and Smallmouth Bass Biological Data From the Potomac River, Dargan, Maryland, 2013-2019 Water Chemistry and Smallmouth Bass Biological Data From the Potomac River, Dargan, Maryland, 2013-2019
Source to Outcome Research Framework that was updated from the 2022 Source to Receptor Research Framework

Juvenile Coho salmon (Oncorhynchus kisutch) behavior is assessed following exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) behavior is assessed following exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Diagram depicting the sources of drinking water (surface water and groundwater), known and potential sources of contaminants introduced to drinking water (urban and agricultural land use, runoff, infiltration, waste, and wastewater sources) and routes of potential exposure from the point of use (drinking water in the home, at work, and from bottled water).
Diagram depicting the sources of drinking water (surface water and groundwater), known and potential sources of contaminants introduced to drinking water (urban and agricultural land use, runoff, infiltration, waste, and wastewater sources) and routes of potential exposure from the point of use (drinking water in the home, at work, and from bottled water).

Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.
Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.
PFAS in US Tapwater Interactive Dashboard PFAS in US Tapwater Interactive Dashboard
Environmental Health Program at the U.S. Geological Survey Environmental Health Program at the U.S. Geological Survey
Drop by Drop Drop by Drop
USGS Chesapeake Bay Studies - Data Catalog USGS Chesapeake Bay Studies - Data Catalog
U.S. Geological Survey COVID-19 Wastewater Surveillance U.S. Geological Survey COVID-19 Wastewater Surveillance
Per- and Polyfluoroalkyl Substances (PFAS) in U.S. Tapwater: Comparison of Public-Supply and Underserved Private-Well Exposures and Associated Health Implications Per- and Polyfluoroalkyl Substances (PFAS) in U.S. Tapwater: Comparison of Public-Supply and Underserved Private-Well Exposures and Associated Health Implications
Code Release for USGS Chesapeake Bay Studies - Data Catalog Application Code Release for USGS Chesapeake Bay Studies - Data Catalog Application
Science and Products
Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community Tapwater exposures, residential risk, and mitigation in a PFAS-impacted-groundwater community
Public, bottled, and private drinking water: Shared contaminant-mixture exposures and effects challenge Public, bottled, and private drinking water: Shared contaminant-mixture exposures and effects challenge
Tissue distribution and temporal and spatial assessment of per- and polyfluoroalkyl substances (PFAS) in smallmouth bass (Micropterus dolomieu) in the mid-Atlantic United States Tissue distribution and temporal and spatial assessment of per- and polyfluoroalkyl substances (PFAS) in smallmouth bass (Micropterus dolomieu) in the mid-Atlantic United States
Mixed contaminant exposure in tapwater and the potential implications for human-health in disadvantaged communities in California Mixed contaminant exposure in tapwater and the potential implications for human-health in disadvantaged communities in California
Temporal analysis of water chemistry and smallmouth bass (Micropterus dolomieu) health at two sites with divergent land use in the Susquehanna River watershed, Pennsylvania, USA Temporal analysis of water chemistry and smallmouth bass (Micropterus dolomieu) health at two sites with divergent land use in the Susquehanna River watershed, Pennsylvania, USA
Tire-derived contaminants 6PPD and 6PPD-Q: Analysis, sample handling, and reconnaissance of United States stream exposures Tire-derived contaminants 6PPD and 6PPD-Q: Analysis, sample handling, and reconnaissance of United States stream exposures
Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications
Exposures and potential health implications of contaminant mixtures in linked source water, finished drinking water, and tapwater from public-supply drinking water systems in Minneapolis/St. Paul area, USA Exposures and potential health implications of contaminant mixtures in linked source water, finished drinking water, and tapwater from public-supply drinking water systems in Minneapolis/St. Paul area, USA
Predicted aquatic exposure effects from a national urban stormwater study Predicted aquatic exposure effects from a national urban stormwater study
Bottled water contaminant exposures and potential human effects Bottled water contaminant exposures and potential human effects
A case study: Temporal trends of environmental stressors and reproductive health of smallmouth bass (Micropterus dolomieu) from a site in the Potomac River Watershed, Maryland, USA A case study: Temporal trends of environmental stressors and reproductive health of smallmouth bass (Micropterus dolomieu) from a site in the Potomac River Watershed, Maryland, USA
Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed
Geospatial Analyses and Applications Core Technology Team
USGS Scientists Develop an Interactive Mapping Tool to Visualize PFAS in Tap Water
Agricultural best management practices can improve water quality and conditions for fisheries in the Chesapeake Bay Watershed
USGS Integrates Findings about Endocrine-Disrupting Compounds in the Chesapeake Watershed
Endocrine Disrupting Compounds in the Chesapeake Bay Watershed Science Team
Data for the Potomac River Watershed Accumulated Wastewater Viewer Data for the Potomac River Watershed Accumulated Wastewater Viewer
“DelRiv 24k – LU": Land Use/Land Cover Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments “DelRiv 24k – LU": Land Use/Land Cover Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments
“DelRiv 24k – NE": Natural Environment Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments “DelRiv 24k – NE": Natural Environment Related Data Summaries for the Delaware River Watershed Within NHD Plus HR catchments
Estimated Densities of Residential Septic Tanks across the Conterminous United States for HUC12, NHDV2 Catchment, and Block Group Scales Estimated Densities of Residential Septic Tanks across the Conterminous United States for HUC12, NHDV2 Catchment, and Block Group Scales
Landscape data compiled for fish health sites in and around the Chesapeake Bay Watershed. Landscape data compiled for fish health sites in and around the Chesapeake Bay Watershed.
Water Chemistry and Smallmouth Bass Biological Data from Pine Creek and West Branch Mahantango Creek, Pennsylvania, 2015-2019 Water Chemistry and Smallmouth Bass Biological Data from Pine Creek and West Branch Mahantango Creek, Pennsylvania, 2015-2019
“ChesBay 24k – LU": Land Use/Land Cover Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.0, October 2024) “ChesBay 24k – LU": Land Use/Land Cover Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.0, October 2024)
“ChesBay 24k – NE": Natural Environment Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025) “ChesBay 24k – NE": Natural Environment Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025)
“ChesBay 24k – CL": Climate Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025) “ChesBay 24k – CL": Climate Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 3.0, March 2025)
“ChesBay 24k – HU": Human Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.1, March 2025) “ChesBay 24k – HU": Human Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments (ver. 2.1, March 2025)
PFAS Reconnaissance Landscape Data PFAS Reconnaissance Landscape Data
Water Chemistry and Smallmouth Bass Biological Data From the Potomac River, Dargan, Maryland, 2013-2019 Water Chemistry and Smallmouth Bass Biological Data From the Potomac River, Dargan, Maryland, 2013-2019
Source to Outcome Research Framework that was updated from the 2022 Source to Receptor Research Framework
Source to Outcome Research Framework that was updated from the 2022 Source to Receptor Research Framework

Juvenile Coho salmon (Oncorhynchus kisutch) behavior is assessed following exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) behavior is assessed following exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Juvenile Coho salmon (Oncorhynchus kisutch) exhibiting abnormal behaviors associated with exposure to 6PPD-quinone, a derivative of the compound 6PPD which is used in tires to prevent wear.
Diagram depicting the sources of drinking water (surface water and groundwater), known and potential sources of contaminants introduced to drinking water (urban and agricultural land use, runoff, infiltration, waste, and wastewater sources) and routes of potential exposure from the point of use (drinking water in the home, at work, and from bottled water).
Diagram depicting the sources of drinking water (surface water and groundwater), known and potential sources of contaminants introduced to drinking water (urban and agricultural land use, runoff, infiltration, waste, and wastewater sources) and routes of potential exposure from the point of use (drinking water in the home, at work, and from bottled water).

Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.
Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.