Patrick Moran
Biologist for the Washington Water Science Center
Science and Products
Filter Total Items: 17
Coal Transport
The Issue: Federal and state natural resource managers and Tribes are concerned with the environmental impacts from unintentional release of coal dust from train cars during transport through the Northwest. Proposed new coal export terminals in Washington and Oregon would substantially increase rail traffic through the Northwest and the release of coal dust to the environment. How USGS will help...
Stormwater Microarray Study
Evaluation of Juvenile Trout Microarray Tools in the Development of an Ambient Monitoring Approach for Urban Streams
Lake Crescent
Lake Crescent in Olympic National Park is known for its clear, near-pristine water. Because the water is very low in plant nutrients, such as nitrogen and phosphorus, the lake is extremely susceptible to even small increases in nutrient levels, which could cause algal blooms and impact the health of three species of fish in the lake. Currently, the growth of bottom-dwelling algae in developed...
Lake Roosevelt-Upper Columbia River
Lake Roosevelt was formed on the Columbia River by the construction of the Grand Coulee Dam, and extends a total of 217 km to within 24 km of Canada The lake is heavily contaminated with trace elements that were discharged as slag material from a smelter in Canada; approximately 360 metric tons were discharged per day from 1900 to 1998. A study by the USGS reported that Lake Roosevelt bed...
Groundwater Pesticide
The Environmental Protection Agency (EPA) is developing a rule requiring States to have a formal plan for the pesticides atrazine, simazine, alachlor, metolachlor, and other pesticides of concern in order to continue using them. The Washington State Department of Agriculture (WSDA), the lead agency for a pesticide plan for Washington, will need an assessment of ground-water vulnerability to...
Filter Total Items: 40
Effect of sample holding time on bioaccessibility and sediment ecotoxicological assessments Effect of sample holding time on bioaccessibility and sediment ecotoxicological assessments
The ecotoxicological effects of hydrophobic organic compound (HOC) contamination in sediment are often assessed using laboratory exposures of cultured invertebrates to field-collected sediment. The use of a sediment holding time (storage at 4°C) between field sampling and the beginning of the bioassay is common practice, yet the effect of holding time on the reliability of bioassay...
Authors
Kara Huff Hartz, Federico Sinche, Samuel Nutile, Courtney Fung, Patrick Moran, Peter Van Metre, Lisa Nowell, Marc Mills, Michael Lydy
Mercury methylation and bioaccumulation in Sinclair Inlet, Kitsap County, Washington Mercury methylation and bioaccumulation in Sinclair Inlet, Kitsap County, Washington
The U.S. Geological Survey evaluated the transformation of mercury to bioavailable methylmercury in Sinclair Inlet, Kitsap County, Washington, and assessed the effect of the transformation processes on the mercury burden in marine organisms and sediment. In August 2008, samples of sediment, water, and biota from six sites in Sinclair Inlet and three bays representative of Puget Sound...
Authors
A.J. Paulson, M.C. Marvin-DiPasquale, P.W. Moran, A.R. Stewart, J.F. DeWild, J. Toft, J.L. Agee, E. Kakouros, Le H. Kieu, B. Carter, R.W. Sheibley, J. Cordell, David P. Krabbenhoft
Juvenile coho salmon growth and health in streams across an urbanization gradient Juvenile coho salmon growth and health in streams across an urbanization gradient
Expanding human population and urbanization alters freshwater systems through structural changes to habitat, temperature effects from increased runoff and reduced canopy cover, altered flows, and increased toxicants. Current stream assessments stop short of measuring health or condition of species utilizing these freshwater habitats and fail to link specific stressors mechanistically to...
Authors
Andrew R. Spanjer, Patrick Moran, Kimberly Larsen, Lisa Wetzel, Adam Hansen, David Beauchamp
Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams
Aquatic organisms in streams are exposed to pesticide mixtures that vary in composition over time in response to changes in flow conditions, pesticide inputs to the stream, and pesticide fate and degradation within the stream. To characterize mixtures of dissolved-phase pesticides and degradates in Midwestern streams, a synoptic study was conducted at 100 streams during May–August 2013...
Authors
Lisa Nowell, Patrick Moran, Travis S. Schmidt, Julia Norman, Naomi Nakagaki, Megan Shoda, Barbara Mahler, Peter C. Van Metre, Wesley Stone, Mark Sandstrom, Michelle L. Hladik
Influence of sediment chemistry and sediment toxicity on macroinvertebrate communities across 99 wadable streams of the Midwestern USA Influence of sediment chemistry and sediment toxicity on macroinvertebrate communities across 99 wadable streams of the Midwestern USA
Simultaneous assessment of sediment chemistry, sediment toxicity, and macroinvertebrate communities can provide multiple lines of evidence when investigating relations between sediment contaminants and ecological degradation. These three measures were evaluated at 99 wadable stream sites across 11 states in the Midwestern United States during the summer of 2013 to assess sediment...
Authors
Patrick Moran, Lisa Nowell, Nile Kemble, Barbara Mahler, Ian Waite, Peter C. Van Metre
Suspended sediment, turbidity, and stream water temperature in the Sauk River Basin, western Washington, water years 2012-16 Suspended sediment, turbidity, and stream water temperature in the Sauk River Basin, western Washington, water years 2012-16
The Sauk River is a federally designated Wild and Scenic River that drains a relatively undisturbed landscape along the western slope of the North Cascade Mountain Range, Washington, which includes the glaciated volcano, Glacier Peak. Naturally high sediment loads characteristic of basins draining volcanoes like Glacier Peak make the Sauk River a dominant contributor of sediment to the...
Authors
Kristin Jaeger, Christopher Curran, Scott Anderson, Scott Morris, Patrick Moran, Katherine Reams
Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers
The Midwest United States is an intensely agricultural region where pesticides in streams pose risks to aquatic biota, but temporal variability in pesticide concentrations makes characterization of their exposure to organisms challenging. To compensate for the effects of temporal variability, we deployed polar organic chemical integrative samplers (POCIS) in 100 small streams across the...
Authors
Peter C. Van Metre, David Alvarez, Barbara Mahler, Lisa Nowell, Mark Sandstrom, Patrick Moran
Monitoring plant tissue nitrogen isotopes to assess nearshore inputs of nitrogen to Lake Crescent, Olympic National Park, Washington Monitoring plant tissue nitrogen isotopes to assess nearshore inputs of nitrogen to Lake Crescent, Olympic National Park, Washington
Mats of filamentous-periphytic algae present in some nearshore areas of Lake Crescent, Olympic National Park, Washington, may indicate early stages of eutrophication from nutrient enrichment of an otherwise highly oligotrophic lake. Natural abundance ratios of stable isotopes of nitrogen (δ15N) measured in plant tissue growing in nearshore areas of the lake indicate that the major source...
Authors
Stephen Cox, Patrick Moran, Raegan Huffman, Steven Fradkin
Development and application of freshwater sediment-toxicity benchmarks for currently used pesticides Development and application of freshwater sediment-toxicity benchmarks for currently used pesticides
Sediment-toxicity benchmarks are needed to interpret the biological significance of currently used pesticides detected in whole sediments. Two types of freshwater sediment benchmarks for pesticides were developed using spiked-sediment bioassay (SSB) data from the literature. These benchmarks can be used to interpret sediment-toxicity data or to assess the potential toxicity of pesticides...
Authors
Lisa Nowell, Julia Norman, Christopher Ingersoll, Patrick Moran
Contaminant removal by wastewater treatment plants in the Stillaguamish River Basin, Washington Contaminant removal by wastewater treatment plants in the Stillaguamish River Basin, Washington
Human activities in most areas of the developed world typically release nutrients, pharmaceuticals, personal care products, pesticides, and other contaminants into the environment, many of which reach freshwater ecosystems. In urbanized areas, wastewater treatment plants (WWTPs) are critical facilities for collecting and reducing the amounts of wastewater contaminants (WWCs) that...
Authors
Jack Barbash, Patrick Moran, Richard Wagner, Michael Wolanek
Pesticide Toxicity Index: a tool for assessing potential toxicity of pesticide mixtures to freshwater aquatic organisms Pesticide Toxicity Index: a tool for assessing potential toxicity of pesticide mixtures to freshwater aquatic organisms
Pesticide mixtures are common in streams with agricultural or urban influence in the watershed. The Pesticide Toxicity Index (PTI) is a screening tool to assess potential aquatic toxicity of complex pesticide mixtures by combining measures of pesticide exposure and acute toxicity in an additive toxic-unit model. The PTI is determined separately for fish, cladocerans, and benthic...
Authors
Lisa Nowell, Julia Norman, Patrick Moran, Jeffrey Martin, Wesley Stone
Contaminants of emerging concern in the lower Stillaguamish River Basin, Washington, 2008-11 Contaminants of emerging concern in the lower Stillaguamish River Basin, Washington, 2008-11
A series of discrete water-quality samples were collected in the lower Stillaguamish River Basin near the city of Arlington, Washington, through a partnership with the Stillaguamish Tribe of Indians. These samples included surface waters of the Stillaguamish River, adjacent tributary streams, and paired inflow and outflow sampling at three wastewater treatment plants in the lower river...
Authors
Richard Wagner, Patrick Moran, Steven Zaugg, Jennifer Sevigny, Judy Pope
Science and Products
Filter Total Items: 17
Coal Transport
The Issue: Federal and state natural resource managers and Tribes are concerned with the environmental impacts from unintentional release of coal dust from train cars during transport through the Northwest. Proposed new coal export terminals in Washington and Oregon would substantially increase rail traffic through the Northwest and the release of coal dust to the environment. How USGS will help...
Stormwater Microarray Study
Evaluation of Juvenile Trout Microarray Tools in the Development of an Ambient Monitoring Approach for Urban Streams
Lake Crescent
Lake Crescent in Olympic National Park is known for its clear, near-pristine water. Because the water is very low in plant nutrients, such as nitrogen and phosphorus, the lake is extremely susceptible to even small increases in nutrient levels, which could cause algal blooms and impact the health of three species of fish in the lake. Currently, the growth of bottom-dwelling algae in developed...
Lake Roosevelt-Upper Columbia River
Lake Roosevelt was formed on the Columbia River by the construction of the Grand Coulee Dam, and extends a total of 217 km to within 24 km of Canada The lake is heavily contaminated with trace elements that were discharged as slag material from a smelter in Canada; approximately 360 metric tons were discharged per day from 1900 to 1998. A study by the USGS reported that Lake Roosevelt bed...
Groundwater Pesticide
The Environmental Protection Agency (EPA) is developing a rule requiring States to have a formal plan for the pesticides atrazine, simazine, alachlor, metolachlor, and other pesticides of concern in order to continue using them. The Washington State Department of Agriculture (WSDA), the lead agency for a pesticide plan for Washington, will need an assessment of ground-water vulnerability to...
Filter Total Items: 40
Effect of sample holding time on bioaccessibility and sediment ecotoxicological assessments Effect of sample holding time on bioaccessibility and sediment ecotoxicological assessments
The ecotoxicological effects of hydrophobic organic compound (HOC) contamination in sediment are often assessed using laboratory exposures of cultured invertebrates to field-collected sediment. The use of a sediment holding time (storage at 4°C) between field sampling and the beginning of the bioassay is common practice, yet the effect of holding time on the reliability of bioassay...
Authors
Kara Huff Hartz, Federico Sinche, Samuel Nutile, Courtney Fung, Patrick Moran, Peter Van Metre, Lisa Nowell, Marc Mills, Michael Lydy
Mercury methylation and bioaccumulation in Sinclair Inlet, Kitsap County, Washington Mercury methylation and bioaccumulation in Sinclair Inlet, Kitsap County, Washington
The U.S. Geological Survey evaluated the transformation of mercury to bioavailable methylmercury in Sinclair Inlet, Kitsap County, Washington, and assessed the effect of the transformation processes on the mercury burden in marine organisms and sediment. In August 2008, samples of sediment, water, and biota from six sites in Sinclair Inlet and three bays representative of Puget Sound...
Authors
A.J. Paulson, M.C. Marvin-DiPasquale, P.W. Moran, A.R. Stewart, J.F. DeWild, J. Toft, J.L. Agee, E. Kakouros, Le H. Kieu, B. Carter, R.W. Sheibley, J. Cordell, David P. Krabbenhoft
Juvenile coho salmon growth and health in streams across an urbanization gradient Juvenile coho salmon growth and health in streams across an urbanization gradient
Expanding human population and urbanization alters freshwater systems through structural changes to habitat, temperature effects from increased runoff and reduced canopy cover, altered flows, and increased toxicants. Current stream assessments stop short of measuring health or condition of species utilizing these freshwater habitats and fail to link specific stressors mechanistically to...
Authors
Andrew R. Spanjer, Patrick Moran, Kimberly Larsen, Lisa Wetzel, Adam Hansen, David Beauchamp
Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams
Aquatic organisms in streams are exposed to pesticide mixtures that vary in composition over time in response to changes in flow conditions, pesticide inputs to the stream, and pesticide fate and degradation within the stream. To characterize mixtures of dissolved-phase pesticides and degradates in Midwestern streams, a synoptic study was conducted at 100 streams during May–August 2013...
Authors
Lisa Nowell, Patrick Moran, Travis S. Schmidt, Julia Norman, Naomi Nakagaki, Megan Shoda, Barbara Mahler, Peter C. Van Metre, Wesley Stone, Mark Sandstrom, Michelle L. Hladik
Influence of sediment chemistry and sediment toxicity on macroinvertebrate communities across 99 wadable streams of the Midwestern USA Influence of sediment chemistry and sediment toxicity on macroinvertebrate communities across 99 wadable streams of the Midwestern USA
Simultaneous assessment of sediment chemistry, sediment toxicity, and macroinvertebrate communities can provide multiple lines of evidence when investigating relations between sediment contaminants and ecological degradation. These three measures were evaluated at 99 wadable stream sites across 11 states in the Midwestern United States during the summer of 2013 to assess sediment...
Authors
Patrick Moran, Lisa Nowell, Nile Kemble, Barbara Mahler, Ian Waite, Peter C. Van Metre
Suspended sediment, turbidity, and stream water temperature in the Sauk River Basin, western Washington, water years 2012-16 Suspended sediment, turbidity, and stream water temperature in the Sauk River Basin, western Washington, water years 2012-16
The Sauk River is a federally designated Wild and Scenic River that drains a relatively undisturbed landscape along the western slope of the North Cascade Mountain Range, Washington, which includes the glaciated volcano, Glacier Peak. Naturally high sediment loads characteristic of basins draining volcanoes like Glacier Peak make the Sauk River a dominant contributor of sediment to the...
Authors
Kristin Jaeger, Christopher Curran, Scott Anderson, Scott Morris, Patrick Moran, Katherine Reams
Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers
The Midwest United States is an intensely agricultural region where pesticides in streams pose risks to aquatic biota, but temporal variability in pesticide concentrations makes characterization of their exposure to organisms challenging. To compensate for the effects of temporal variability, we deployed polar organic chemical integrative samplers (POCIS) in 100 small streams across the...
Authors
Peter C. Van Metre, David Alvarez, Barbara Mahler, Lisa Nowell, Mark Sandstrom, Patrick Moran
Monitoring plant tissue nitrogen isotopes to assess nearshore inputs of nitrogen to Lake Crescent, Olympic National Park, Washington Monitoring plant tissue nitrogen isotopes to assess nearshore inputs of nitrogen to Lake Crescent, Olympic National Park, Washington
Mats of filamentous-periphytic algae present in some nearshore areas of Lake Crescent, Olympic National Park, Washington, may indicate early stages of eutrophication from nutrient enrichment of an otherwise highly oligotrophic lake. Natural abundance ratios of stable isotopes of nitrogen (δ15N) measured in plant tissue growing in nearshore areas of the lake indicate that the major source...
Authors
Stephen Cox, Patrick Moran, Raegan Huffman, Steven Fradkin
Development and application of freshwater sediment-toxicity benchmarks for currently used pesticides Development and application of freshwater sediment-toxicity benchmarks for currently used pesticides
Sediment-toxicity benchmarks are needed to interpret the biological significance of currently used pesticides detected in whole sediments. Two types of freshwater sediment benchmarks for pesticides were developed using spiked-sediment bioassay (SSB) data from the literature. These benchmarks can be used to interpret sediment-toxicity data or to assess the potential toxicity of pesticides...
Authors
Lisa Nowell, Julia Norman, Christopher Ingersoll, Patrick Moran
Contaminant removal by wastewater treatment plants in the Stillaguamish River Basin, Washington Contaminant removal by wastewater treatment plants in the Stillaguamish River Basin, Washington
Human activities in most areas of the developed world typically release nutrients, pharmaceuticals, personal care products, pesticides, and other contaminants into the environment, many of which reach freshwater ecosystems. In urbanized areas, wastewater treatment plants (WWTPs) are critical facilities for collecting and reducing the amounts of wastewater contaminants (WWCs) that...
Authors
Jack Barbash, Patrick Moran, Richard Wagner, Michael Wolanek
Pesticide Toxicity Index: a tool for assessing potential toxicity of pesticide mixtures to freshwater aquatic organisms Pesticide Toxicity Index: a tool for assessing potential toxicity of pesticide mixtures to freshwater aquatic organisms
Pesticide mixtures are common in streams with agricultural or urban influence in the watershed. The Pesticide Toxicity Index (PTI) is a screening tool to assess potential aquatic toxicity of complex pesticide mixtures by combining measures of pesticide exposure and acute toxicity in an additive toxic-unit model. The PTI is determined separately for fish, cladocerans, and benthic...
Authors
Lisa Nowell, Julia Norman, Patrick Moran, Jeffrey Martin, Wesley Stone
Contaminants of emerging concern in the lower Stillaguamish River Basin, Washington, 2008-11 Contaminants of emerging concern in the lower Stillaguamish River Basin, Washington, 2008-11
A series of discrete water-quality samples were collected in the lower Stillaguamish River Basin near the city of Arlington, Washington, through a partnership with the Stillaguamish Tribe of Indians. These samples included surface waters of the Stillaguamish River, adjacent tributary streams, and paired inflow and outflow sampling at three wastewater treatment plants in the lower river...
Authors
Richard Wagner, Patrick Moran, Steven Zaugg, Jennifer Sevigny, Judy Pope