Steven R Corsi
Steven Corsi is a Research Hydrologist (Chemistry) with the Upper Midwest Water Science Center.
AREAS OF EXPERTISE
- Impact of aircraft and pavement deicers on aquatic ecosystems
- Evaluation of the effectiveness of airport deicer management systems
- Assessment of anthropogenic impact on stream water quality
- Aquatic toxicity evaluation
- Recreational water quality
- Surface water investigations of waterborne pathogens
Education and Certifications
M.S. in Civil and Environmental Engineering, University of Wisconsin, 1989
B.S. in Physics, University of Wisconsin-Eau Claire, 1986
Affiliations and Memberships*
State of Wisconsin Licensed Professional Hydrologist
Society of Toxicology and Chemistry
Science and Products
Filter Total Items: 13
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Patterns of host-associated fecal indicators driven by hydrology, precipitation, and land use attributes in Great Lakes watersheds
Fecal contamination from sewage and agricultural runoff is a pervasive problem in Great Lakes watersheds. Most work examining fecal pollution loads relies on discrete samples of fecal indicators and modeling land use. In this study, we made empirical measurements of human and ruminant-associated fecal indicator bacteria and combined these with hydrological measurements in eight watersheds ranging
Authors
Deborah K. Dila, Steven R. Corsi, Peter L. Lenaker, Austin K. Baldwin, Melinda J. Bootsma, Sandra L. McLellan
Year-round presence of neonicotinoid insecticides in tributaries to the Great Lakes, USA
To better characterize the transport of neonicotinoid insecticides to the world's largest freshwater ecosystem, monthly samples (October 2015–September 2016) were collected from 10 major tributaries to the Great Lakes, USA. For the monthly tributary samples, neonicotinoids were detected in every month sampled and five of the six target neonicotinoids were detected. At least one neonicotinoid was d
Authors
Michelle L. Hladik, Steven R. Corsi, Dana W. Kolpin, Austin K. Baldwin, Brett R. Blackwell, Jenna E. Cavallin
Response to comment on “Primary sources and toxicity of PAHs in Milwaukee-area streambed sediments”—The authors' reply
No abstract available.
Authors
Austin K. Baldwin, Steven R. Corsi, Michelle A. Lutz, Christopher G. Ingersoll, Rebecca A. Dorman, Christopher Magruder, Matthew Magruder
An “EAR” on environmental surveillance and monitoring: A case study on the use of Exposure–Activity Ratios (EARs) to prioritize sites, chemicals, and bioactivities of concern in Great Lakes waters
Current environmental monitoring approaches focus primarily on chemical occurrence. However, based on concentration alone, it can be difficult to identify which compounds may be of toxicological concern and should be prioritized for further monitoring, in-depth testing, or management. This can be problematic because toxicological characterization is lacking for many emerging contaminants. New sour
Authors
Brett R. Blackwell, Gerald T. Ankley, Steven R. Corsi, Laura A. DeCicco, Kieth A. Houck, Richard S. Judson, Shibin Li, Matthew T. Martin, Elizabeth Murphy, Anthony L. Schroeder, Edwin R. Smith, Joe Swintek, Daniel L. Villeneuve
Hydrologic, land cover, and seasonal patterns of waterborne pathogens in Great Lakes tributaries
Great Lakes tributaries are known to deliver waterborne pathogens from a host of sources. To examine the hydrologic, land cover, and seasonal patterns of waterborne pathogens (i.e. protozoa (2), pathogenic bacteria (4) human viruses, (8) and bovine viruses (8)) eight rivers were monitored in the Great Lakes Basin over 29 months from February 2011 to June 2013. Sampling locations represented a wide
Authors
Peter L. Lenaker, Steven R. Corsi, Mark A. Borchardt, Susan K. Spencer, Austin K. Baldwin, Michelle A. Lutz
Primary sources and toxicity of PAHs in Milwaukee-area streambed sediment
High concentrations of polycyclic aromatic hydrocarbons (PAHs) in streams can be a significant stressor to aquatic organisms. To understand the likely sources and toxicity of PAHs in Milwaukee-area streams, streambed sediment samples from 40 sites and parking lot dust samples from 6 sites were analyzed for 38 parent PAHs and 25 alkylated PAHs. Diagnostic ratios, profile correlations, principal com
Authors
Austin K. Baldwin, Steven R. Corsi, Michelle A. Lutz, Christopher G. Ingersoll, Rebecca A. Dorman, Christopher Magruder, Matthew Magruder
Plastic debris in 29 Great Lakes tributaries: Relations to watershed attributes and hydrology
Plastic debris is a growing contaminant of concern in freshwater environments, yet sources, transport, and fate remain unclear. This study characterized the quantity and morphology of floating micro- and macroplastics in 29 Great Lakes tributaries in six states under different land covers, wastewater effluent contributions, population densities, and hydrologic conditions. Tributaries were sampled
Authors
Austin K. Baldwin, Steven R. Corsi, Sherri A. Mason
Quantification of human-associated fecal indicators reveal sewage from urban watersheds as a source of pollution to Lake Michigan
Sewage contamination of urban waterways from sewer overflows and failing infrastructure is a major environmental and public health concern. Fecal coliforms (FC) are commonly employed as fecal indicator bacteria, but do not distinguish between human and non-human sources of fecal contamination. Human Bacteroides and humanLachnospiraceae, two genetic markers for human-associated indicator bacteria,
Authors
Hayley T. Olds, Deborah K. Dila, Melinda J. Bootsma, Steven R. Corsi, Sandra L. McLellan
Organic contaminants in Great Lakes tributaries: Prevalence and potential aquatic toxicity
Organic compounds used in agriculture, industry, and households make their way into surface waters through runoff, leaking septic-conveyance systems, regulated and unregulated discharges, and combined sewer overflows, among other sources. Concentrations of these organic waste compounds (OWCs) in some Great Lakes tributaries indicate a high potential for adverse impacts on aquatic organisms. During
Authors
Austin K. Baldwin, Steven R. Corsi, Laura A. De Cicco, Peter L. Lenaker, Michelle A. Lutz, Daniel J. Sullivan, Kevin D. Richards
Comparative evaluation of statistical and mechanistic models of Escherichia coli at beaches in southern Lake Michigan
Statistical and mechanistic models are popular tools for predicting the levels of indicator bacteria at recreational beaches. Researchers tend to use one class of model or the other, and it is difficult to generalize statements about their relative performance due to differences in how the models are developed, tested, and used. We describe a cooperative modeling approach for freshwater beaches im
Authors
Ammar Safaie, Aaron Wendzel, Zhongfu Ge, Meredith Nevers, Richard L. Whitman, Steven R. Corsi, Mantha S. Phanikumar
Predicting recreational water quality advisories: A comparison of statistical methods
Epidemiological studies indicate that fecal indicator bacteria (FIB) in beach water are associated with illnesses among people having contact with the water. In order to mitigate public health impacts, many beaches are posted with an advisory when the concentration of FIB exceeds a beach action value. The most commonly used method of measuring FIB concentration takes 18–24 h before returning a res
Authors
Wesley R. Brooks, Steven R. Corsi, Michael N. Fienen, Rebecca B. Carvin
Human and bovine viruses and bacteria at three Great Lakes beaches: Environmental variable associations and health risk
Waterborne pathogens were measured at three beaches in Lake Michigan, environmental factors for predicting pathogen concentrations were identified, and the risk of swimmer infection and illness was estimated. Waterborne pathogens were detected in 96% of samples collected at three Lake Michigan beaches in summer, 2010. Samples were quantified for 22 pathogens in four microbial categories (human vir
Authors
Steven R. Corsi, Mark A. Borchardt, Rebecca B. Carvin, Tucker R Burch, Susan K. Spencer, Michelle A. Lutz, Colleen M. McDermott, Kimberly M. Busse, Gregory Kleinheinz, Xiaoping Feng, Jun Zhu
Science and Products
Filter Total Items: 13
No Result Found
Filter Total Items: 72
Patterns of host-associated fecal indicators driven by hydrology, precipitation, and land use attributes in Great Lakes watersheds
Fecal contamination from sewage and agricultural runoff is a pervasive problem in Great Lakes watersheds. Most work examining fecal pollution loads relies on discrete samples of fecal indicators and modeling land use. In this study, we made empirical measurements of human and ruminant-associated fecal indicator bacteria and combined these with hydrological measurements in eight watersheds ranging
Authors
Deborah K. Dila, Steven R. Corsi, Peter L. Lenaker, Austin K. Baldwin, Melinda J. Bootsma, Sandra L. McLellan
Year-round presence of neonicotinoid insecticides in tributaries to the Great Lakes, USA
To better characterize the transport of neonicotinoid insecticides to the world's largest freshwater ecosystem, monthly samples (October 2015–September 2016) were collected from 10 major tributaries to the Great Lakes, USA. For the monthly tributary samples, neonicotinoids were detected in every month sampled and five of the six target neonicotinoids were detected. At least one neonicotinoid was d
Authors
Michelle L. Hladik, Steven R. Corsi, Dana W. Kolpin, Austin K. Baldwin, Brett R. Blackwell, Jenna E. Cavallin
Response to comment on “Primary sources and toxicity of PAHs in Milwaukee-area streambed sediments”—The authors' reply
No abstract available.
Authors
Austin K. Baldwin, Steven R. Corsi, Michelle A. Lutz, Christopher G. Ingersoll, Rebecca A. Dorman, Christopher Magruder, Matthew Magruder
An “EAR” on environmental surveillance and monitoring: A case study on the use of Exposure–Activity Ratios (EARs) to prioritize sites, chemicals, and bioactivities of concern in Great Lakes waters
Current environmental monitoring approaches focus primarily on chemical occurrence. However, based on concentration alone, it can be difficult to identify which compounds may be of toxicological concern and should be prioritized for further monitoring, in-depth testing, or management. This can be problematic because toxicological characterization is lacking for many emerging contaminants. New sour
Authors
Brett R. Blackwell, Gerald T. Ankley, Steven R. Corsi, Laura A. DeCicco, Kieth A. Houck, Richard S. Judson, Shibin Li, Matthew T. Martin, Elizabeth Murphy, Anthony L. Schroeder, Edwin R. Smith, Joe Swintek, Daniel L. Villeneuve
Hydrologic, land cover, and seasonal patterns of waterborne pathogens in Great Lakes tributaries
Great Lakes tributaries are known to deliver waterborne pathogens from a host of sources. To examine the hydrologic, land cover, and seasonal patterns of waterborne pathogens (i.e. protozoa (2), pathogenic bacteria (4) human viruses, (8) and bovine viruses (8)) eight rivers were monitored in the Great Lakes Basin over 29 months from February 2011 to June 2013. Sampling locations represented a wide
Authors
Peter L. Lenaker, Steven R. Corsi, Mark A. Borchardt, Susan K. Spencer, Austin K. Baldwin, Michelle A. Lutz
Primary sources and toxicity of PAHs in Milwaukee-area streambed sediment
High concentrations of polycyclic aromatic hydrocarbons (PAHs) in streams can be a significant stressor to aquatic organisms. To understand the likely sources and toxicity of PAHs in Milwaukee-area streams, streambed sediment samples from 40 sites and parking lot dust samples from 6 sites were analyzed for 38 parent PAHs and 25 alkylated PAHs. Diagnostic ratios, profile correlations, principal com
Authors
Austin K. Baldwin, Steven R. Corsi, Michelle A. Lutz, Christopher G. Ingersoll, Rebecca A. Dorman, Christopher Magruder, Matthew Magruder
Plastic debris in 29 Great Lakes tributaries: Relations to watershed attributes and hydrology
Plastic debris is a growing contaminant of concern in freshwater environments, yet sources, transport, and fate remain unclear. This study characterized the quantity and morphology of floating micro- and macroplastics in 29 Great Lakes tributaries in six states under different land covers, wastewater effluent contributions, population densities, and hydrologic conditions. Tributaries were sampled
Authors
Austin K. Baldwin, Steven R. Corsi, Sherri A. Mason
Quantification of human-associated fecal indicators reveal sewage from urban watersheds as a source of pollution to Lake Michigan
Sewage contamination of urban waterways from sewer overflows and failing infrastructure is a major environmental and public health concern. Fecal coliforms (FC) are commonly employed as fecal indicator bacteria, but do not distinguish between human and non-human sources of fecal contamination. Human Bacteroides and humanLachnospiraceae, two genetic markers for human-associated indicator bacteria,
Authors
Hayley T. Olds, Deborah K. Dila, Melinda J. Bootsma, Steven R. Corsi, Sandra L. McLellan
Organic contaminants in Great Lakes tributaries: Prevalence and potential aquatic toxicity
Organic compounds used in agriculture, industry, and households make their way into surface waters through runoff, leaking septic-conveyance systems, regulated and unregulated discharges, and combined sewer overflows, among other sources. Concentrations of these organic waste compounds (OWCs) in some Great Lakes tributaries indicate a high potential for adverse impacts on aquatic organisms. During
Authors
Austin K. Baldwin, Steven R. Corsi, Laura A. De Cicco, Peter L. Lenaker, Michelle A. Lutz, Daniel J. Sullivan, Kevin D. Richards
Comparative evaluation of statistical and mechanistic models of Escherichia coli at beaches in southern Lake Michigan
Statistical and mechanistic models are popular tools for predicting the levels of indicator bacteria at recreational beaches. Researchers tend to use one class of model or the other, and it is difficult to generalize statements about their relative performance due to differences in how the models are developed, tested, and used. We describe a cooperative modeling approach for freshwater beaches im
Authors
Ammar Safaie, Aaron Wendzel, Zhongfu Ge, Meredith Nevers, Richard L. Whitman, Steven R. Corsi, Mantha S. Phanikumar
Predicting recreational water quality advisories: A comparison of statistical methods
Epidemiological studies indicate that fecal indicator bacteria (FIB) in beach water are associated with illnesses among people having contact with the water. In order to mitigate public health impacts, many beaches are posted with an advisory when the concentration of FIB exceeds a beach action value. The most commonly used method of measuring FIB concentration takes 18–24 h before returning a res
Authors
Wesley R. Brooks, Steven R. Corsi, Michael N. Fienen, Rebecca B. Carvin
Human and bovine viruses and bacteria at three Great Lakes beaches: Environmental variable associations and health risk
Waterborne pathogens were measured at three beaches in Lake Michigan, environmental factors for predicting pathogen concentrations were identified, and the risk of swimmer infection and illness was estimated. Waterborne pathogens were detected in 96% of samples collected at three Lake Michigan beaches in summer, 2010. Samples were quantified for 22 pathogens in four microbial categories (human vir
Authors
Steven R. Corsi, Mark A. Borchardt, Rebecca B. Carvin, Tucker R Burch, Susan K. Spencer, Michelle A. Lutz, Colleen M. McDermott, Kimberly M. Busse, Gregory Kleinheinz, Xiaoping Feng, Jun Zhu
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government