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Toxic Substances Hydrology Featured Science Activities

Our science is summarized in a series of feature articles that highlight recent U.S. Geological Survey (USGS) environmental health science activities. They are short summaries of peer-reviewed journal articles and USGS reports co-authored by our specialized teams of scientists.
 

Filter Total Items: 213

USGS Scientist Receives Award for Assistance with National Wetlands Assessment

U.S. Geological Survey (USGS) scientist Dr. Keith A. Loftin received the U.S. Environmental Protection Agency (EPA) Office of Water's Achievement in Science and Technology Award for his contributions to the National Wetlands Condition Assessment.
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USGS Scientist Receives Award for Assistance with National Wetlands Assessment

U.S. Geological Survey (USGS) scientist Dr. Keith A. Loftin received the U.S. Environmental Protection Agency (EPA) Office of Water's Achievement in Science and Technology Award for his contributions to the National Wetlands Condition Assessment.
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Frequent Fliers—Web-Based Tool Aids in Understanding the Role of Wild Birds in Transmission of Avian Influenza

This visualization tool helps researchers and public health officials see how relations between poultry density and waterfowl migration routes affect the threat of avian influenza to people and the poultry industry.
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Frequent Fliers—Web-Based Tool Aids in Understanding the Role of Wild Birds in Transmission of Avian Influenza

This visualization tool helps researchers and public health officials see how relations between poultry density and waterfowl migration routes affect the threat of avian influenza to people and the poultry industry.
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Examining Shifts in Stream Microbial Communities Exposed to Oil and Gas Wastewaters

Shifts in the overall microbial community structure were present in stream sediments that contained chemicals associated with unconventional oil and gas wastewaters. This work is part of a long-term study designed to understand persistence of chemicals from oil and gas wastewaters in sediments and water and how those factors might be related to exposures and adverse health effects, if any, on...
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Examining Shifts in Stream Microbial Communities Exposed to Oil and Gas Wastewaters

Shifts in the overall microbial community structure were present in stream sediments that contained chemicals associated with unconventional oil and gas wastewaters. This work is part of a long-term study designed to understand persistence of chemicals from oil and gas wastewaters in sediments and water and how those factors might be related to exposures and adverse health effects, if any, on...
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Nitrate Addition Enhances Arsenic Immobilization in Groundwater

The addition of nitrate in a low oxygen groundwater resulted in the immobilization of naturally occurring dissolved arsenic and the conversion of nitrate to innocuous nitrogen gas.
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Nitrate Addition Enhances Arsenic Immobilization in Groundwater

The addition of nitrate in a low oxygen groundwater resulted in the immobilization of naturally occurring dissolved arsenic and the conversion of nitrate to innocuous nitrogen gas.
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Fish Diets Switch From Aquatic to Terrestrial Insects in Streams Effected By Metal Contamination

A riparian zone rich in terrestrial insects can provide an alternate food source for fish in metal-impacted watersheds.
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Fish Diets Switch From Aquatic to Terrestrial Insects in Streams Effected By Metal Contamination

A riparian zone rich in terrestrial insects can provide an alternate food source for fish in metal-impacted watersheds.
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Understanding Pathways of Unconventional Oil and Gas Produced Water Spills in the Environment

A new study measures the transport of chemicals associated with unconventional oil and gas (UOG) produced waters downstream from a pipeline leak in North Dakota. This work is part of a long-term study designed to understand chemical persistence in sediments and water and how those factors might be related to contaminant exposures and associated with adverse health effects, if any, on organisms.
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Understanding Pathways of Unconventional Oil and Gas Produced Water Spills in the Environment

A new study measures the transport of chemicals associated with unconventional oil and gas (UOG) produced waters downstream from a pipeline leak in North Dakota. This work is part of a long-term study designed to understand chemical persistence in sediments and water and how those factors might be related to contaminant exposures and associated with adverse health effects, if any, on organisms.
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Is White Sucker Tumor Prevalence in some Wisconsin Rivers Related to Environmental Contaminant Exposures or Other Factors?

The incidence of particular skin and liver tumors on white suckers collected from some Wisconsin rivers corresponded to the degree of urban development within the watershed. Further research is needed to understand the relationship between exposure to urban-sourced contaminants and the initiation, promotion, and potential for population-level effects of these tumors.
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Is White Sucker Tumor Prevalence in some Wisconsin Rivers Related to Environmental Contaminant Exposures or Other Factors?

The incidence of particular skin and liver tumors on white suckers collected from some Wisconsin rivers corresponded to the degree of urban development within the watershed. Further research is needed to understand the relationship between exposure to urban-sourced contaminants and the initiation, promotion, and potential for population-level effects of these tumors.
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USGS Online Mapper Provides a Decadal Look at Groundwater Quality

A new online interactive mapping tool provides summaries of decadal-scale changes in groundwater chemistry across the Nation.
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USGS Online Mapper Provides a Decadal Look at Groundwater Quality

A new online interactive mapping tool provides summaries of decadal-scale changes in groundwater chemistry across the Nation.
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Elevated Bladder Cancer in Northern New England—Drinking Water and Arsenic

Study finds bladder cancer risk was associated with water intake among participants with a history of private domestic well use. The trend was significant for participants who used shallow dug wells exclusively—a well type that typically has low arsenic concentrations but may have had higher concentrations historically.
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Elevated Bladder Cancer in Northern New England—Drinking Water and Arsenic

Study finds bladder cancer risk was associated with water intake among participants with a history of private domestic well use. The trend was significant for participants who used shallow dug wells exclusively—a well type that typically has low arsenic concentrations but may have had higher concentrations historically.
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New Study Measures Crop Bactericide, Nitrapyrin, in Iowa Streams

First-ever reconnaissance study documents the off-field transport of nitrapyrin — a nitrification inhibitor applied with fertilizers as a bactericide to kill natural soil bacteria for the purpose of increasing crop yields — to adjacent streams. This study is the first step in understanding the transport, occurrence, and potential effects of nitrapyrin or similar compounds on nitrogen processing in...
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New Study Measures Crop Bactericide, Nitrapyrin, in Iowa Streams

First-ever reconnaissance study documents the off-field transport of nitrapyrin — a nitrification inhibitor applied with fertilizers as a bactericide to kill natural soil bacteria for the purpose of increasing crop yields — to adjacent streams. This study is the first step in understanding the transport, occurrence, and potential effects of nitrapyrin or similar compounds on nitrogen processing in...
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USGS Study Identifies Factors Related to Cyanobacterial Harmful Algal Blooms

U.S. Geological Survey (USGS) scientists identified water-quality and environmental factors related to cyanobacterial harmful algal blooms at beaches in Ohio. This information was collected as part of a long-term plan to develop site-specific predictive models for microcystin concentrations.
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USGS Study Identifies Factors Related to Cyanobacterial Harmful Algal Blooms

U.S. Geological Survey (USGS) scientists identified water-quality and environmental factors related to cyanobacterial harmful algal blooms at beaches in Ohio. This information was collected as part of a long-term plan to develop site-specific predictive models for microcystin concentrations.
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Gestodene Affects Fish Reproductive Behavior in Laboratory Exposure Study

Short-term laboratory exposure of adult fathead minnows to the human contraceptive progestin, gestodene (GES), at environmentally relevant concentrations induced rapid and negative effects on reproductive health and suggests that wild fish may be similarly affected.
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Gestodene Affects Fish Reproductive Behavior in Laboratory Exposure Study

Short-term laboratory exposure of adult fathead minnows to the human contraceptive progestin, gestodene (GES), at environmentally relevant concentrations induced rapid and negative effects on reproductive health and suggests that wild fish may be similarly affected.
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