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
Fine particle retention within stream storage areas at base flow and in response to a storm event
Tracer-based characterization of hyporheic exchange and benthic biolayers in streams
Hydraulic and biochemical gradients limit wetland mercury supply to an Adirondack stream
Hydrologic exchange flows and their ecological consequences in river corridors
Mechanisms of nutrient retention and its relation to flow connectivity in river-floodplain corridors
Denitrification in the Mississippi River network controlled by flow through river bedforms
River corridor science: Hydrologic exchange and ecological consequences from bedforms to basins
A field comparison of multiple techniques to quantify groundwater - surface-water interactions
Dual-domain mass-transfer parameters from electrical hysteresis: Theory and analytical approach applied to laboratory, synthetic streambed, and groundwater experiments
Hyporheic flow and transport processes: mechanisms, models, and biogeochemical implications
Dynamic hyporheic exchange at intermediate timescales: testing the relative importance of evapotranspiration and flood pulses
A hydrogeomorphic river network model predicts where and why hyporheic exchange is important in large basins
Science and Products
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Filter Total Items: 116
Fine particle retention within stream storage areas at base flow and in response to a storm event
Fine particles (1–100 µm), including particulate organic carbon (POC) and fine sediment, influence stream ecological functioning because they may contain or have a high affinity to sorb nitrogen and phosphorus. These particles are immobilized within stream storage areas, especially hyporheic sediments and benthic biofilms. However, fine particles are also known to remobilize under all flow conditiAuthorsJ. D. Drummond, L. G. Larsen, R. González-Pinzón, A. I. Packman, Judson HarveyTracer-based characterization of hyporheic exchange and benthic biolayers in streams
Shallow benthic biolayers at the top of the streambed are believed to be places of enhanced biogeochemical turnover within the hyporheic zone. They can be investigated by reactive stream tracer tests with tracer recordings in the streambed and in the stream channel. Common in-stream measurements of such reactive tracers cannot localize where the processing primarily takes place, whereas isolated vAuthorsJulia L.A. Knapp, Ricardo González-Pinzón, Jennifer D. Drummond, Laurel G. Larsen, Olaf A. Cirpka, Judson W. HarveyHydraulic and biochemical gradients limit wetland mercury supply to an Adirondack stream
Net fluxes (change between upstream and downstream margins) for water, methylmercury (MeHg), total mercury (THg), dissolved organic carbon (DOC), and chloride (Cl) were assessed twice in an Adirondack stream reach (Sixmile Brook, USA), to test the hypothesized importance of wetland-stream hydraulic and chemical gradients as fundamental controls on fluvial mercury (Hg) supply. The 500 m study reachAuthorsPaul M. Bradley, Douglas A. Burns, Judson Harvey, Celeste A. Journey, Mark E. Brigham, Karen Riva-MurrayHydrologic exchange flows and their ecological consequences in river corridors
The actively flowing waters of streams and rivers remain in close contact with surrounding off-channel and subsurface environments. These hydrologic linkages between relatively fast flowing channel waters, with more slowly flowing waters off-channel and in the subsurface, are collectively referred to as hydrologic exchange flows (HEFs). HEFs include surface exchange with a channel’s marginal areasAuthorsJudson HarveyMechanisms of nutrient retention and its relation to flow connectivity in river-floodplain corridors
Understanding heterogeneity or patchiness in the distribution of vegetation and retention of C and nutrients in river corridors is critical for setting priorities for river management and restoration. Several mechanisms of spatial differentiation in nutrient retention in river and floodplain corridors have been recognized, but few studies have distinguished their relative importance or establishedAuthorsLaurel Larsen, Judson Harvey, Morgan M. MaglioDenitrification in the Mississippi River network controlled by flow through river bedforms
Increasing nitrogen concentrations in the world’s major rivers have led to over-fertilization of sensitive downstream waters. Flow through channel bed and bank sediments acts to remove riverine nitrogen through microbe-mediated denitrification reactions. However, little is understood about where in the channel network this biophysical process is most efficient, why certain channels are more effectAuthorsJesus D. Gomez-Velez, Judson W. Harvey, M. Bayani Cardenas, Brian KielRiver corridor science: Hydrologic exchange and ecological consequences from bedforms to basins
Previously regarded as the passive drains of watersheds, over the past 50 years, rivers have progressively been recognized as being actively connected with off-channel environments. These connections prolong physical storage and enhance reactive processing to alter water chemistry and downstream transport of materials and energy. Here we propose river corridor science as a concept that integratesAuthorsJudson Harvey, Michael GooseffA field comparison of multiple techniques to quantify groundwater - surface-water interactions
Groundwater–surface-water (GW-SW) interactions in streams are difficult to quantify because of heterogeneity in hydraulic and reactive processes across a range of spatial and temporal scales. The challenge of quantifying these interactions has led to the development of several techniques, from centimeter-scale probes to whole-system tracers, including chemical, thermal, and electrical methods. WeAuthorsRicardo González-Pinzón, Adam S Ward, Christine E Hatch, Adam N. Wlostowski, Kamini Singha, Michael N. Gooseff, Roy Haggerty, Judson Harvey, Olaf A Cirpka, James T BrockDual-domain mass-transfer parameters from electrical hysteresis: Theory and analytical approach applied to laboratory, synthetic streambed, and groundwater experiments
Models of dual‐domain mass transfer (DDMT) are used to explain anomalous aquifer transport behavior such as the slow release of contamination and solute tracer tailing. Traditional tracer experiments to characterize DDMT are performed at the flow path scale (meters), which inherently incorporates heterogeneous exchange processes; hence, estimated “effective” parameters are sensitive to experimentaAuthorsMartin A. Briggs, Frederick D. Day-Lewis, John B. Ong, Judson W. Harvey, John W. LaneHyporheic flow and transport processes: mechanisms, models, and biogeochemical implications
Fifty years of hyporheic zone research have shown the important role played by the hyporheic zone as an interface between groundwater and surface waters. However, it is only in the last two decades that what began as an empirical science has become a mechanistic science devoted to modeling studies of the complex fluid dynamical and biogeochemical mechanisms occurring in the hyporheic zone. These eAuthorsFulvio Boano, Judson W. Harvey, Andrea Marion, Aaron I. Packman, Roberto Revelli, Luca Ridolfi, Wörman AndersDynamic hyporheic exchange at intermediate timescales: testing the relative importance of evapotranspiration and flood pulses
Hyporheic fluxes influence ecological processes across a continuum of timescales. However, few studies have been able to characterize hyporheic fluxes and residence time distributions (RTDs) over timescales of days to years, during which evapotranspiration (ET) and seasonal flood pulses create unsteady forcing. Here we present a data-driven, particle-tracking piston model that characterizes hyporhAuthorsLaurel G. Larsen, Judson W. Harvey, Morgan M. MaglioA hydrogeomorphic river network model predicts where and why hyporheic exchange is important in large basins
Hyporheic exchange has been hypothesized to have basin-scale consequences; however, predictions throughout river networks are limited by available geomorphic and hydrogeologic data and by models that can analyze and aggregate hyporheic exchange flows across large spatial scales. We developed a parsimonious but physically based model of hyporheic flow for application in large river basins: NetworksAuthorsJesus D. Gomez-Velez, Judson Harvey