The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
Judith C Thomas
Judith Thomas has been a hydrologist with the U.S. Geological Survey for almost 20 years with expertise in groundwater and water quality. Judith is currently the section chief for Groundwater and Geophysics in the Central Midwest Water Science Center.
Judith has a B.S. from Purdue University and a M.S. from Indiana University. Judith started her career with the USGS in July 2000 in Middleton, Wisconsin where she worked on various projects in groundwater, surface water, and water quality. In 2006, Judith headed west to join the USGS in Grand Junction, Colorado. Some of Judith's Colorado projects included working in northwest Colorado characterizing groundwater resources in areas of significant energy development for the Bureau of Land Management as well as installing and monitoring a groundwater well network in areas of irrigated Mancos Shale in Delta and Montrose, Colorado.
Science and Products
Groundwater Monitoring in McHenry County, Illinois
Groundwater Monitoring in McHenry County, Illinois
Airborne Electromagnetic (AEM) Survey 2023 - Illinois River Basin
The U.S. Geological Survey (USGS) is conducting an Airborne ElectroMagnetic (AEM) Survey starting in late January 2023 and lasting three to four weeks. A helicopter towing a large hoop from a cable will begin making low-level flights over the Illinois River Basin, covering much of central Illinois and parts of northwest Indiana.
Lower Gunnison River Basin Groundwater Selenium
The east side of the Uncompahgre River Basin has been a known contributor of dissolved selenium to recipient streams. Discharge of groundwater containing dissolved selenium contributes to surface-water selenium concentrations and loads; however, the groundwater system on the east side of the Uncompahgre River Basin is not well characterized.
Piceance Basin Water-Quality Data
As large-scale energy development continues in the Piceance Basin, there is potential for changes in surface-water and groundwater resources. In the southern Piceance Basin, a water task force consisting of numerous local governments, municipalities, and energy companies collectively identified the need for a common data repository. In the northern Piceance Basin, similar efforts were underway in...
Roaring Fork Watershed Water-Quality Data
The Roaring Fork Watershed, located in the Rocky Mountains 150 miles west of Denver, Colorado, has seen rapid development and population growth in recent years. The USGS, in cooperation with Pitkin County, Colorado Water Conservation District, Ruedi Water and Power Authority, and other local entities, conducted a comprehensive surface- and ground-water resource assessment in the Roaring Fork River...
NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin (AD)
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
Burke Minsley speaking to group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022
linkResearch geophysicist Burke Minsley discussing aerial electromagnetic (AEM) survey equipment with group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022. In March 2022, a helicopter carried an airborne electromagnetic induction sensor over parts of southeast and southwest Wisconsin as part of a USGS study to map the aquifers in t
Burke Minsley speaking to group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022
linkResearch geophysicist Burke Minsley discussing aerial electromagnetic (AEM) survey equipment with group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022. In March 2022, a helicopter carried an airborne electromagnetic induction sensor over parts of southeast and southwest Wisconsin as part of a USGS study to map the aquifers in t
Measuring water-quality parameters in a domestic-supply well
A hydrologic technician uses a meter to measure water-quality parameters, such as pH, dissolved oxygen, and specific conductance, in a domestic-supply well.
A hydrologic technician uses a meter to measure water-quality parameters, such as pH, dissolved oxygen, and specific conductance, in a domestic-supply well.
Science and Products
Groundwater Monitoring in McHenry County, Illinois
Groundwater Monitoring in McHenry County, Illinois
Airborne Electromagnetic (AEM) Survey 2023 - Illinois River Basin
The U.S. Geological Survey (USGS) is conducting an Airborne ElectroMagnetic (AEM) Survey starting in late January 2023 and lasting three to four weeks. A helicopter towing a large hoop from a cable will begin making low-level flights over the Illinois River Basin, covering much of central Illinois and parts of northwest Indiana.
Lower Gunnison River Basin Groundwater Selenium
The east side of the Uncompahgre River Basin has been a known contributor of dissolved selenium to recipient streams. Discharge of groundwater containing dissolved selenium contributes to surface-water selenium concentrations and loads; however, the groundwater system on the east side of the Uncompahgre River Basin is not well characterized.
Piceance Basin Water-Quality Data
As large-scale energy development continues in the Piceance Basin, there is potential for changes in surface-water and groundwater resources. In the southern Piceance Basin, a water task force consisting of numerous local governments, municipalities, and energy companies collectively identified the need for a common data repository. In the northern Piceance Basin, similar efforts were underway in...
Roaring Fork Watershed Water-Quality Data
The Roaring Fork Watershed, located in the Rocky Mountains 150 miles west of Denver, Colorado, has seen rapid development and population growth in recent years. The USGS, in cooperation with Pitkin County, Colorado Water Conservation District, Ruedi Water and Power Authority, and other local entities, conducted a comprehensive surface- and ground-water resource assessment in the Roaring Fork River...
NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin (AD)
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
The USGS is bringing expertise in the use of airborne electromagnetic (AEM) surveys to support groundwater studies. Like medical imaging allows us to non-invasively measure inside the human body, AEM surveys help to investigate Earth's subsurface without the need for expensive drilling.
Burke Minsley speaking to group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022
linkResearch geophysicist Burke Minsley discussing aerial electromagnetic (AEM) survey equipment with group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022. In March 2022, a helicopter carried an airborne electromagnetic induction sensor over parts of southeast and southwest Wisconsin as part of a USGS study to map the aquifers in t
Burke Minsley speaking to group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022
linkResearch geophysicist Burke Minsley discussing aerial electromagnetic (AEM) survey equipment with group of USGS employees and Cooperators at AEM survey in southwest Wisconsin 2022. In March 2022, a helicopter carried an airborne electromagnetic induction sensor over parts of southeast and southwest Wisconsin as part of a USGS study to map the aquifers in t
Measuring water-quality parameters in a domestic-supply well
A hydrologic technician uses a meter to measure water-quality parameters, such as pH, dissolved oxygen, and specific conductance, in a domestic-supply well.
A hydrologic technician uses a meter to measure water-quality parameters, such as pH, dissolved oxygen, and specific conductance, in a domestic-supply well.