A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
Aaron D Firnstahl
Aaron is a Hydrologic Technician at the Upper Midwest Water Science Center.
Education and Certifications
B.S. 2009, Geology and Geophysics; B.S. History; Certificate, European Studies; Certificate, Classical Studies; University of Wisconsin-Madison
Science and Products
Well Water Advisory Forecasts for northeast Wisconsin
SARS-CoV-2 Data from National Wastewater Surveillance System Surge Capacity Sampling, September 2021
A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.
Microbial source tracking and land use associations for antibiotic resistance genes in private wells influenced by human and livestock fecal sources
Assessing private well contamination in Grant, Iowa, and Lafayette Counties, Wisconsin: The southwest Wisconsin groundwater and geology study
Statewide quantitative microbial risk assessment for waterborne viruses, bacteria, and protozoa in public water supply wells in Minnesota
Fate and seasonality of antimicrobial resistance genes during full-scale anaerobic digestion of cattle manure across seven livestock production facilities
Sources and risk factors for nitrate and microbial contamination of private household wells in the fractured dolomite aquifer of northeastern Wisconsin
Quantitative microbial risk assessment for contaminated private wells in the fractured dolomite aquifer of Kewaunee County, Wisconsin
Microbial pathogens and contaminants of emerging concern in groundwater at an urban subsurface stormwater infiltration site
Viral, bacterial, and protozoan pathogens and fecal markers in wells supplying groundwater to public water systems in Minnesota, USA
Septic systems and rainfall influence human fecal markers and indicator organisms occurrence in private wells in southeastern Pennsylvania
Laboratory for Infectious Disease and the Environment (LIDE)
Cryptosporidium incidence and surface water influence of groundwater supplying public water systems in Minnesota, USA
Automated time-series measurement of microbial concentrations in groundwater-derived water supplies
Science and Products
Well Water Advisory Forecasts for northeast Wisconsin
SARS-CoV-2 Data from National Wastewater Surveillance System Surge Capacity Sampling, September 2021
A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.