Judson W Harvey
Dr. Judson Harvey is a Senior Research Hydrologist for the USGS Water Resources Mission Area.
Dr. Jud Harvey investigates hydrologic transport at the interface between groundwater and surface water and effects on contaminants and aquatic ecosystems from the mountains to the sea. Jud has served on editorial boards for Water Resources Research and Wetlands, and on committees of the National Research Council, EPA’s Science Advisory Board, the National Science Foundation, the National Center for Ecological Analysis and Synthesis, the state of California’s EPA, the Canadian Government’s Science Review Board, and standing committees of the American Geophysical Union and the Association for the Sciences of Limnology and Oceanography. Jud has lectured widely, and delivered plenary talks at meetings such as the IAH in Lisbon, the Sustainable Watersheds meeting in Beijing, and the Gordon Research Conference on Catchment Science in Plymouth, has taught “Groundwater-Surface Water Relationships” for twenty-five years, and has supervised numerous graduate theses and postdoctoral fellows. He recently led a major synthesis on “River Corridor Functions at a Continental Scale” at the John Wesley Powell Center in Fort Collins. Jud is author of over 120 peer-reviewed articles, including a paper reprinted in “Benchmark Papers in Hydrology: Groundwater”, the first chapter of the widely used textbook Streams and Ground Waters and its recent revision Streams in a Changing Environment, a National Academies book entitled Riparian Areas, and a popular USGS circular “Groundwater and Surface Water: A Single Resource” with 44,000 copies in print. For ground-breaking research Jud was elected as a Fellow of the Geological Society of America (2010) and the American Geophysical Union (2016).
Professional Experience
2017 - present
Senior Hydrology Team Leader, Earth System Processes Division, USGS, Reston2009 – 2017
Research Hydrology Team Leader, National Research Program, USGS, Reston2003 – 2009
Research Hydrologist and Advisor to Research Chief, USGS, Reston
Education and Certifications
University of Virginia, Charlottesville, VA
Hydrology, Ph.D. 1990University of Virginia, Charlottesville, VA
Hydrology, M.S.&
Science and Products
Filter Total Items: 15
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How vegetation and sediment transport feedbacks drive landscape change in the Everglades and wetlands worldwide
Mechanisms reported to promote landscape self‐organization cannot explain vegetation patterning oriented parallel to flow. Recent catastrophic shifts in Everglades landscape pattern and ecological function highlight the need to understand the feedbacks governing these ecosystems. We modeled feedback between vegetation, hydrology, and sediment transport on the basis of a decade of experimentation.
Authors
Laurel G. Larsen, Judson W. Harvey
Predicting bed shear stress and its role in sediment dynamics and restoration potential of the Everglades and other vegetated flow systems
Entrainment of sediment by flowing water affects topography, habitat suitability, and nutrient cycling in vegetated floodplains and wetlands, impacting ecosystem evolution and the success of restoration projects. Nonetheless, restoration managers lack simple decision-support tools for predicting shear stresses and sediment redistribution potential in different vegetation communities. Using a field
Authors
Laurel G. Larsen, Judson Harvey, John P. Crimaldi
Hydroecological factors governing surface water flow on a low-gradient floodplain
"Interrelationships between hydrology and aquatic ecosystems are better understood in streams and rivers compared to their surrounding floodplains. Our goal was to characterize the hydrology of the Everglades ridge and slough floodplain ecosystem, which is valued for the comparatively high biodiversity and connectivity of its parallel-drainage features but which has been degraded over the past cen
Authors
Judson W. Harvey, Raymond W. Schaffranek, Gregory B. Noe, Laurel G. Larsen, Daniel Nowacki
Incorporating both physical and kinetic limitations in quantifying dissolved oxygen flux to aquatic sediments
Traditionally, dissolved oxygen (DO) fluxes have been calculated using the thin-film theory with DO microstructure data in systems characterized by fine sediments and low velocities. However, recent experimental evidence of fluctuating DO concentrations near the sediment-water interface suggests that turbulence and coherent motions control the mass transfer, and the surface renewal theory gives a
Authors
B.L. O'Connor, Miki Hondzo, J. W. Harvey
Multi-scale measurements and modeling of denitrification in streams with varying flow and nitrate concentration in the upper Mississippi River basin, USA
Denitrification is an important net sink for NO3− in streams, but direct measurements are limited and in situ controlling factors are not well known. We measured denitrification at multiple scales over a range of flow conditions and NO3− concentrations in streams draining agricultural land in the upper Mississippi River basin. Comparisons of reach-scale measurements (in-stream mass transport and t
Authors
John K. Böhlke, Ronald C. Antweiler, Judson W. Harvey, Andrew E. Laursen, Lesley K. Smith, Richard L. Smith, Mary A. Voytek
Predicting organic floc transport dynamics in shallow aquatic ecosystems: Insights from the field, the laboratory, and numerical modeling
Transport of particulate organic material can impact watershed sediment and nutrient budgets and can alter the geomorphologic evolution of shallow aquatic environments. Prediction of organic aggregate (“floc”) transport in these environments requires knowledge of how hydraulics and biota affect the entrainment, settling, and aggregation of particles. This study evaluated the aggregation and field
Authors
Judson W. Harvey, Gregory B. Noe, Laurel G. Larsen, John P. Crimaldi
A simple technique for continuous measurement of time-variable gas transfer in surface waters
Mass balance models of dissolved gases in streams, lakes, and rivers serve as the basis for estimating wholeecosystem rates for various biogeochemical processes. Rates of gas exchange between water and the atmosphere are important and error-prone components of these models. Here we present a simple and efficient modification of the SF6 gas tracer approach that can be used concurrently while collec
Authors
Craig R. Tobias, John Karl Bohlke, Judson W. Harvey, Eurybiades Busenberg
Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads. At the watershed scale, there is a keen interest in understanding the factors that control the fate of nitrogen throughout the stream channel network, with particular atten
Authors
Richard B. Alexander, John K. Böhlke, Elizabeth W. Boyer, Mark B. David, Judson W. Harvey, Patrick J. Mulholland, Sybil P. Seitzinger, Craig R. Tobias, Christina Tonitto, Wilfred M. Wollheim
Hematology of healthy Florida manatees (Trichechus manatus)
Background: Hematologic analysis is an important tool in evaluating the general health status of free-ranging manatees and in the diagnosis and monitoring of rehabilitating animals. Objectives: The purpose of this study was to evaluate diagnostically important hematologic analytes in healthy manatees (Trichechus manatus) and to assess variations with respect to location (free ranging vs captive),
Authors
J. W. Harvey, K.E. Harr, D. Murphy, M.T. Walsh, E.C. Nolan, R. K. Bonde, M.G. Pate, C. J. Deutsch, H.H. Edwards, W.L. Clapp
Groundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA
The Everglades (Florida, USA) is one of the world's larger subtropical peatlands with biological communities adapted to waters low in total dissolved solids and nutrients. Detecting how the pre-drainage hydrological system has been altered is crucial to preserving its functional attributes. However, reliable tools for hindcasting historic conditions in the Everglades are limited. A recent synthesi
Authors
J. W. Harvey, P.V. McCormick
Morphologic and transport properties of natural organic floc
The morphology, entrainment, and settling of suspended aggregates (“floc”) significantly impact fluxes of organic carbon, nutrients, and contaminants in aquatic environments. However, transport properties of highly organic floc remain poorly understood. In this study detrital floc was collected in the Florida Everglades from two sites with different abundances of periphyton for use in a settling c
Authors
Laurel G. Larsen, Judson W. Harvey, John P. Crimaldi
Comparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury. Activities of these enzym
Authors
K.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey
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Filter Total Items: 114
How vegetation and sediment transport feedbacks drive landscape change in the Everglades and wetlands worldwide
Mechanisms reported to promote landscape self‐organization cannot explain vegetation patterning oriented parallel to flow. Recent catastrophic shifts in Everglades landscape pattern and ecological function highlight the need to understand the feedbacks governing these ecosystems. We modeled feedback between vegetation, hydrology, and sediment transport on the basis of a decade of experimentation.AuthorsLaurel G. Larsen, Judson W. HarveyPredicting bed shear stress and its role in sediment dynamics and restoration potential of the Everglades and other vegetated flow systems
Entrainment of sediment by flowing water affects topography, habitat suitability, and nutrient cycling in vegetated floodplains and wetlands, impacting ecosystem evolution and the success of restoration projects. Nonetheless, restoration managers lack simple decision-support tools for predicting shear stresses and sediment redistribution potential in different vegetation communities. Using a fieldAuthorsLaurel G. Larsen, Judson Harvey, John P. CrimaldiHydroecological factors governing surface water flow on a low-gradient floodplain
"Interrelationships between hydrology and aquatic ecosystems are better understood in streams and rivers compared to their surrounding floodplains. Our goal was to characterize the hydrology of the Everglades ridge and slough floodplain ecosystem, which is valued for the comparatively high biodiversity and connectivity of its parallel-drainage features but which has been degraded over the past cenAuthorsJudson W. Harvey, Raymond W. Schaffranek, Gregory B. Noe, Laurel G. Larsen, Daniel NowackiIncorporating both physical and kinetic limitations in quantifying dissolved oxygen flux to aquatic sediments
Traditionally, dissolved oxygen (DO) fluxes have been calculated using the thin-film theory with DO microstructure data in systems characterized by fine sediments and low velocities. However, recent experimental evidence of fluctuating DO concentrations near the sediment-water interface suggests that turbulence and coherent motions control the mass transfer, and the surface renewal theory gives aAuthorsB.L. O'Connor, Miki Hondzo, J. W. HarveyMulti-scale measurements and modeling of denitrification in streams with varying flow and nitrate concentration in the upper Mississippi River basin, USA
Denitrification is an important net sink for NO3− in streams, but direct measurements are limited and in situ controlling factors are not well known. We measured denitrification at multiple scales over a range of flow conditions and NO3− concentrations in streams draining agricultural land in the upper Mississippi River basin. Comparisons of reach-scale measurements (in-stream mass transport and tAuthorsJohn K. Böhlke, Ronald C. Antweiler, Judson W. Harvey, Andrew E. Laursen, Lesley K. Smith, Richard L. Smith, Mary A. VoytekPredicting organic floc transport dynamics in shallow aquatic ecosystems: Insights from the field, the laboratory, and numerical modeling
Transport of particulate organic material can impact watershed sediment and nutrient budgets and can alter the geomorphologic evolution of shallow aquatic environments. Prediction of organic aggregate (“floc”) transport in these environments requires knowledge of how hydraulics and biota affect the entrainment, settling, and aggregation of particles. This study evaluated the aggregation and fieldAuthorsJudson W. Harvey, Gregory B. Noe, Laurel G. Larsen, John P. CrimaldiA simple technique for continuous measurement of time-variable gas transfer in surface waters
Mass balance models of dissolved gases in streams, lakes, and rivers serve as the basis for estimating wholeecosystem rates for various biogeochemical processes. Rates of gas exchange between water and the atmosphere are important and error-prone components of these models. Here we present a simple and efficient modification of the SF6 gas tracer approach that can be used concurrently while collecAuthorsCraig R. Tobias, John Karl Bohlke, Judson W. Harvey, Eurybiades BusenbergDynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads. At the watershed scale, there is a keen interest in understanding the factors that control the fate of nitrogen throughout the stream channel network, with particular attenAuthorsRichard B. Alexander, John K. Böhlke, Elizabeth W. Boyer, Mark B. David, Judson W. Harvey, Patrick J. Mulholland, Sybil P. Seitzinger, Craig R. Tobias, Christina Tonitto, Wilfred M. WollheimHematology of healthy Florida manatees (Trichechus manatus)
Background: Hematologic analysis is an important tool in evaluating the general health status of free-ranging manatees and in the diagnosis and monitoring of rehabilitating animals. Objectives: The purpose of this study was to evaluate diagnostically important hematologic analytes in healthy manatees (Trichechus manatus) and to assess variations with respect to location (free ranging vs captive),AuthorsJ. W. Harvey, K.E. Harr, D. Murphy, M.T. Walsh, E.C. Nolan, R. K. Bonde, M.G. Pate, C. J. Deutsch, H.H. Edwards, W.L. ClappGroundwater's significance to changing hydrology, water chemistry, and biological communities of a floodplain ecosystem, Everglades, South Florida, USA
The Everglades (Florida, USA) is one of the world's larger subtropical peatlands with biological communities adapted to waters low in total dissolved solids and nutrients. Detecting how the pre-drainage hydrological system has been altered is crucial to preserving its functional attributes. However, reliable tools for hindcasting historic conditions in the Everglades are limited. A recent synthesiAuthorsJ. W. Harvey, P.V. McCormickMorphologic and transport properties of natural organic floc
The morphology, entrainment, and settling of suspended aggregates (“floc”) significantly impact fluxes of organic carbon, nutrients, and contaminants in aquatic environments. However, transport properties of highly organic floc remain poorly understood. In this study detrital floc was collected in the Florida Everglades from two sites with different abundances of periphyton for use in a settling cAuthorsLaurel G. Larsen, Judson W. Harvey, John P. CrimaldiComparison of blood aminotransferase methods for assessment of myopathy and hepatopathy in Florida manatees (Trichechus manatus latirostris)
Muscle injury is common in Florida manatees (Trichechus manatus latirostris). Plasma aspartate amino-transferase (AST) is frequently used to assess muscular damage in capture myopathy and traumatic injury. Therefore, accurate measurement of AST and alanine aminotransferase (ALT) is important in managed, free-ranging animals, as well as in those rehabilitating from injury. Activities of these enzymAuthorsK.E. Harr, K. Allison, R. K. Bonde, D. Murphy, J. W. Harvey