Robert W Black
Emeritus Scientist for the Washington Water Science Center
Science and Products
Filter Total Items: 14
White River Videography
The quantity and quality of instream habitat is one of many factors affecting aquatic organisms such as anadromous and non-anadromous salmonids. The measurement and assessment of instream habitat has been the focus of many habitat monitoring and restoration projects throughout the State of Washington. On-the-ground habitat monitoring is extremely important for specific variables and specific...
Cedar River Watershed
The Cedar River watershed provides two-thirds of the water supply for the greater Seattle metropolitan region, in addition to being home to numerous terrestrial and aquatic organisms such as salmon, some of which are Federally listed as threatened species. The City of Seattle is establishing monitoring plans for the Cedar River watershed to effectively manage the resource. A critical component of...
Filter Total Items: 31
Chemical concentrations in water and suspended sediment, Green River to Lower Duwamish Waterway near Seattle, Washington, 2016–17 Chemical concentrations in water and suspended sediment, Green River to Lower Duwamish Waterway near Seattle, Washington, 2016–17
From August 2016 to March 2017, the U.S. Geological Survey (USGS) collected representative samples of filtered and unfiltered water and suspended sediment (including the colloidal fraction) at USGS streamgage 12113390 (Duwamish River at Golf Course, at Tukwila, Washington) during 13 periods of differing flow conditions. Samples were analyzed by Washington-State-accredited laboratories...
Authors
Kathleen E. Conn, Robert Black, Norman T. Peterson, Craig Senter, Elena Chapman
Continuous-flow centrifugation to collect suspended sediment for chemical analysis Continuous-flow centrifugation to collect suspended sediment for chemical analysis
Recent advances in suspended-sediment monitoring tools and surrogate technologies have greatly improved the ability to quantify suspended-sediment concentrations and to estimate daily, seasonal, and annual suspended-sediment fluxes from rivers to coastal waters. However, little is known about the chemical composition of suspended sediment, and how it may vary spatially between water...
Authors
Kathleen E. Conn, Richard S. Dinicola, Robert Black, Stephen Cox, Richard Sheibley, James Foreman, Craig A. Senter, Norman T. Peterson
Effect of a levee setback on aquatic resources using two-dimensional flow and bioenergetics models Effect of a levee setback on aquatic resources using two-dimensional flow and bioenergetics models
Watershed restoration is the focus of many resource managers and can include a multitude of restoration actions each with specific restoration objectives. For the White River flowing through the cities of Pacific and Sumner, Washington, a levee setback has been proposed to reconnect the river with its historical floodplain to help reduce flood risks, as well as provide increased habitat...
Authors
Robert Black, Christiana Czuba, Christopher Magirl, Sarah McCarthy, Hans Berge, Kyle Comanor
Chemical concentrations and instantaneous loads, Green River to the Lower Duwamish Waterway near Seattle, Washington, 2013–15 Chemical concentrations and instantaneous loads, Green River to the Lower Duwamish Waterway near Seattle, Washington, 2013–15
In November 2013, U.S. Geological Survey streamgaging equipment was installed at a historical water-quality station on the Duwamish River, Washington, within the tidal influence at river kilometer 16.7 (U.S. Geological Survey site 12113390; Duwamish River at Golf Course at Tukwila, WA). Publicly available, real-time continuous data includes river streamflow, stream velocity, and...
Authors
Kathleen E. Conn, Robert Black, Ann Vanderpool-Kimura, James R. Foreman, Norman T. Peterson, Craig A. Senter, Stephen Sissel
Detecting significant change in stream benthic macroinvertebrate communities in wilderness areas Detecting significant change in stream benthic macroinvertebrate communities in wilderness areas
A major challenge in the biological monitoring of stream ecosystems in protected wilderness areas is discerning whether temporal changes in community structure are significantly outside of a reference condition that represents natural or acceptable annual variation in population cycles. Otherwise sites could erroneously be classified as impaired. Long-term datasets are essential for...
Authors
Alexander Milner, Andrea Woodward, Jerome Freilich, Robert Black, Vincent Resh
Nutrient attenuation in rivers and streams, Puget Sound Basin, Washington Nutrient attenuation in rivers and streams, Puget Sound Basin, Washington
Nutrients such as nitrogen and phosphorus are important for aquatic ecosystem health. Excessive amounts of nutrients, however, can make aquatic ecosystems harmful for biota because enhanced growth and decay cycles of aquatic algae can reduce dissolved oxygen in the water. In Puget Sound marine waters, low dissolved oxygen concentrations are observed in a number of marine nearshore areas...
Authors
Rich Sheibley, Christopher Konrad, Robert Black
Data compilation for assessing sediment and toxic chemical loads from the Green River to the lower Duwamish Waterway, Washington Data compilation for assessing sediment and toxic chemical loads from the Green River to the lower Duwamish Waterway, Washington
Between February and June 2013, the U.S. Geological Survey collected representative samples of whole water, suspended sediment, and (or) bed sediment from a single strategically located site on the Duwamish River, Washington, during seven periods of different flow conditions. Samples were analyzed by Washington-State-accredited laboratories for a large suite of compounds, including...
Authors
Kathleen E. Conn, Robert Black
Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington
The watershed model SPARROW (Spatially Related Regressions on Watershed attributes) was used to predict total nitrogen (TN) and total phosphorus (TP) loads and yields for the Middle Columbia River Basin in Idaho, Oregon, and Washington. The new models build on recently published models for the entire Pacific Northwest, and provide revised load predictions for the arid interior of the...
Authors
Henry Johnson, Robert Black, Daniel Wise
Impacts of agricultural land use on biological integrity: A causal analysis Impacts of agricultural land use on biological integrity: A causal analysis
Agricultural land use has often been linked to nutrient enrichment, habitat degradation, hydrologic alteration, and loss of biotic integrity in streams. The U.S. Geological Survey's National Water Quality Assessment Program sampled 226 stream sites located in eight agriculture‐dominated study units across the United States to investigate the geographic variability and causes of...
Authors
C.M. Riseng, M.J. Wiley, Robert Black, M.D. Munn
Response of algal metrics to nutrients and physical factors and identification of nutrient thresholds in agricultural streams Response of algal metrics to nutrients and physical factors and identification of nutrient thresholds in agricultural streams
Many streams within the United States are impaired due to nutrient enrichment, particularly in agricultural settings. The present study examines the response of benthic algal communities in agricultural and minimally disturbed sites from across the western United States to a suite of environmental factors, including nutrients, collected at multiple scales. The first objective was to...
Authors
Robert Black, Patrick Moran, Jill Frankforter
Environmental Setting of the Granger Drain and DR2 Basins, Washington, 2003-04 Environmental Setting of the Granger Drain and DR2 Basins, Washington, 2003-04
The Granger Drain and DR2 basins are located in the Yakima River basin in south central Washington. These agricultural basins are one of five areas in the United States selected for study as part of the National Water-Quality Assessment Program Agricultural Chemicals: Source, Transport, and Fate Study. The Program is designed to describe water-quality conditions and trends based on...
Authors
Karen Payne, Henry Johnson, Robert Black
Characterization of instream hydraulic and riparian habitat conditions and stream temperatures of the Upper White River Basin, Washington, using multispectral imaging systems Characterization of instream hydraulic and riparian habitat conditions and stream temperatures of the Upper White River Basin, Washington, using multispectral imaging systems
Instream hydraulic and riparian habitat conditions and stream temperatures were characterized for selected stream segments in the Upper White River Basin, Washington. An aerial multispectral imaging system used digital cameras to photograph the stream segments across multiple wavelengths to characterize fish habitat and temperature conditions. All imageries were georeferenced. Fish...
Authors
Robert Black, Alan Haggland, Greg Crosby
Science and Products
Filter Total Items: 14
White River Videography
The quantity and quality of instream habitat is one of many factors affecting aquatic organisms such as anadromous and non-anadromous salmonids. The measurement and assessment of instream habitat has been the focus of many habitat monitoring and restoration projects throughout the State of Washington. On-the-ground habitat monitoring is extremely important for specific variables and specific...
Cedar River Watershed
The Cedar River watershed provides two-thirds of the water supply for the greater Seattle metropolitan region, in addition to being home to numerous terrestrial and aquatic organisms such as salmon, some of which are Federally listed as threatened species. The City of Seattle is establishing monitoring plans for the Cedar River watershed to effectively manage the resource. A critical component of...
Filter Total Items: 31
Chemical concentrations in water and suspended sediment, Green River to Lower Duwamish Waterway near Seattle, Washington, 2016–17 Chemical concentrations in water and suspended sediment, Green River to Lower Duwamish Waterway near Seattle, Washington, 2016–17
From August 2016 to March 2017, the U.S. Geological Survey (USGS) collected representative samples of filtered and unfiltered water and suspended sediment (including the colloidal fraction) at USGS streamgage 12113390 (Duwamish River at Golf Course, at Tukwila, Washington) during 13 periods of differing flow conditions. Samples were analyzed by Washington-State-accredited laboratories...
Authors
Kathleen E. Conn, Robert Black, Norman T. Peterson, Craig Senter, Elena Chapman
Continuous-flow centrifugation to collect suspended sediment for chemical analysis Continuous-flow centrifugation to collect suspended sediment for chemical analysis
Recent advances in suspended-sediment monitoring tools and surrogate technologies have greatly improved the ability to quantify suspended-sediment concentrations and to estimate daily, seasonal, and annual suspended-sediment fluxes from rivers to coastal waters. However, little is known about the chemical composition of suspended sediment, and how it may vary spatially between water...
Authors
Kathleen E. Conn, Richard S. Dinicola, Robert Black, Stephen Cox, Richard Sheibley, James Foreman, Craig A. Senter, Norman T. Peterson
Effect of a levee setback on aquatic resources using two-dimensional flow and bioenergetics models Effect of a levee setback on aquatic resources using two-dimensional flow and bioenergetics models
Watershed restoration is the focus of many resource managers and can include a multitude of restoration actions each with specific restoration objectives. For the White River flowing through the cities of Pacific and Sumner, Washington, a levee setback has been proposed to reconnect the river with its historical floodplain to help reduce flood risks, as well as provide increased habitat...
Authors
Robert Black, Christiana Czuba, Christopher Magirl, Sarah McCarthy, Hans Berge, Kyle Comanor
Chemical concentrations and instantaneous loads, Green River to the Lower Duwamish Waterway near Seattle, Washington, 2013–15 Chemical concentrations and instantaneous loads, Green River to the Lower Duwamish Waterway near Seattle, Washington, 2013–15
In November 2013, U.S. Geological Survey streamgaging equipment was installed at a historical water-quality station on the Duwamish River, Washington, within the tidal influence at river kilometer 16.7 (U.S. Geological Survey site 12113390; Duwamish River at Golf Course at Tukwila, WA). Publicly available, real-time continuous data includes river streamflow, stream velocity, and...
Authors
Kathleen E. Conn, Robert Black, Ann Vanderpool-Kimura, James R. Foreman, Norman T. Peterson, Craig A. Senter, Stephen Sissel
Detecting significant change in stream benthic macroinvertebrate communities in wilderness areas Detecting significant change in stream benthic macroinvertebrate communities in wilderness areas
A major challenge in the biological monitoring of stream ecosystems in protected wilderness areas is discerning whether temporal changes in community structure are significantly outside of a reference condition that represents natural or acceptable annual variation in population cycles. Otherwise sites could erroneously be classified as impaired. Long-term datasets are essential for...
Authors
Alexander Milner, Andrea Woodward, Jerome Freilich, Robert Black, Vincent Resh
Nutrient attenuation in rivers and streams, Puget Sound Basin, Washington Nutrient attenuation in rivers and streams, Puget Sound Basin, Washington
Nutrients such as nitrogen and phosphorus are important for aquatic ecosystem health. Excessive amounts of nutrients, however, can make aquatic ecosystems harmful for biota because enhanced growth and decay cycles of aquatic algae can reduce dissolved oxygen in the water. In Puget Sound marine waters, low dissolved oxygen concentrations are observed in a number of marine nearshore areas...
Authors
Rich Sheibley, Christopher Konrad, Robert Black
Data compilation for assessing sediment and toxic chemical loads from the Green River to the lower Duwamish Waterway, Washington Data compilation for assessing sediment and toxic chemical loads from the Green River to the lower Duwamish Waterway, Washington
Between February and June 2013, the U.S. Geological Survey collected representative samples of whole water, suspended sediment, and (or) bed sediment from a single strategically located site on the Duwamish River, Washington, during seven periods of different flow conditions. Samples were analyzed by Washington-State-accredited laboratories for a large suite of compounds, including...
Authors
Kathleen E. Conn, Robert Black
Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington Estimation of total nitrogen and total phosphorus in streams of the Middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington
The watershed model SPARROW (Spatially Related Regressions on Watershed attributes) was used to predict total nitrogen (TN) and total phosphorus (TP) loads and yields for the Middle Columbia River Basin in Idaho, Oregon, and Washington. The new models build on recently published models for the entire Pacific Northwest, and provide revised load predictions for the arid interior of the...
Authors
Henry Johnson, Robert Black, Daniel Wise
Impacts of agricultural land use on biological integrity: A causal analysis Impacts of agricultural land use on biological integrity: A causal analysis
Agricultural land use has often been linked to nutrient enrichment, habitat degradation, hydrologic alteration, and loss of biotic integrity in streams. The U.S. Geological Survey's National Water Quality Assessment Program sampled 226 stream sites located in eight agriculture‐dominated study units across the United States to investigate the geographic variability and causes of...
Authors
C.M. Riseng, M.J. Wiley, Robert Black, M.D. Munn
Response of algal metrics to nutrients and physical factors and identification of nutrient thresholds in agricultural streams Response of algal metrics to nutrients and physical factors and identification of nutrient thresholds in agricultural streams
Many streams within the United States are impaired due to nutrient enrichment, particularly in agricultural settings. The present study examines the response of benthic algal communities in agricultural and minimally disturbed sites from across the western United States to a suite of environmental factors, including nutrients, collected at multiple scales. The first objective was to...
Authors
Robert Black, Patrick Moran, Jill Frankforter
Environmental Setting of the Granger Drain and DR2 Basins, Washington, 2003-04 Environmental Setting of the Granger Drain and DR2 Basins, Washington, 2003-04
The Granger Drain and DR2 basins are located in the Yakima River basin in south central Washington. These agricultural basins are one of five areas in the United States selected for study as part of the National Water-Quality Assessment Program Agricultural Chemicals: Source, Transport, and Fate Study. The Program is designed to describe water-quality conditions and trends based on...
Authors
Karen Payne, Henry Johnson, Robert Black
Characterization of instream hydraulic and riparian habitat conditions and stream temperatures of the Upper White River Basin, Washington, using multispectral imaging systems Characterization of instream hydraulic and riparian habitat conditions and stream temperatures of the Upper White River Basin, Washington, using multispectral imaging systems
Instream hydraulic and riparian habitat conditions and stream temperatures were characterized for selected stream segments in the Upper White River Basin, Washington. An aerial multispectral imaging system used digital cameras to photograph the stream segments across multiple wavelengths to characterize fish habitat and temperature conditions. All imageries were georeferenced. Fish...
Authors
Robert Black, Alan Haggland, Greg Crosby