Randall Bayless
Randall is a Research Hydrologist in the RGEG program and Groundwater Specialist for the Indiana-Kentucky Water Science Center; he has worked for the science center since 1989. He also is an Adjunct Assistant Professor at Indiana University - Purdue University Indianapolis.
Projects at USGS have covered a wide range of interests including
- karst hydrology,
- isotope geochemistry,
- Lake Michigan,
- horizontal flow meter technologies,
- pesticide and nutrient fate,
- unsaturated zone instrumentation and transport modeling,
- high pH (slag) and low pH (coal mine) settings,
- surface and borehole geophysics, and
- wetland hydrology.
Education
Attended Wabash College, Purdue University (B.S. 1983), Indiana University (M.S. 1987, Ph.D. 1994).
Received a B.S. from Purdue University with a geology major and mathematics minor.
Received a M.S. from Indiana University with a major in hydrogeology and a minor in numerical methods. The M.S. thesis used numerical modeling to verify field evidence of ice-sheet surging during the Pleistocene epoch.
Received a Ph.D. from Indiana University with a major in hydrogeology and a minor in geochemistry. The Ph.D. dissertation used hydraulic and geochemical modeling to determine that hydrated iron-sulfate minerals were responsible for acute acid-mine drainage events.
Horizontal Borehole Flowmeters
Horizontal borehole flowmeters may provide opportunities to measure the rate and direction of groundwater flow and the advective transport of dissolved and neutrally buoyant contaminants. Optical, acoustic, thermal, and chemical technologies are being evaluated. Research is directed toward defining the limits of each technology and the environmental and hydrologic conditions that are best suited for each tool. Testing has been done in field settings and laboratory aquifer simulators.
Science and Products
Hydrologic data and groundwater flow simulations in the vicinity of Long Lake, Indiana Dunes National Lakeshore, near Gary, Indiana
The role of efflorescent sulfate salts in Indiana’s mine water quality
Hydrogeology and simulation of groundwater flow at the Green Valley reclaimed coal refuse site near Terre Haute, Indiana
Accuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator.
Predicting unsaturated zone nitrogen mass balances in agricultural settings of the United States
Pesticide fate and transport throughout unsaturated zones in five agricultural settings, USA
Simulated fate and transport of metolachlor in the unsaturated zone, Maryland, USA
Influences of the unsaturated, saturated, and riparian zones on the transport of nitrate near the Merced River, California, USA
Hydrologic Characteristics of a Managed Wetland and a Natural Riverine Wetland along the Kankakee River in Northwestern Indiana
Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Use of 87Sr/86Sr and δ11B to Identify Slag-Affected Sediment in Southern Lake Michigan
Mineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
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Filter Total Items: 39
Hydrologic data and groundwater flow simulations in the vicinity of Long Lake, Indiana Dunes National Lakeshore, near Gary, Indiana
The U.S. Geological Survey (USGS) collected data and simulated groundwater flow to increase understanding of the hydrology and the effects of drainage alterations to the water table in the vicinity of Long Lake, near Gary, Indiana. East Long Lake and West Long Lake (collectively known as Long Lake) make up one of the largest interdunal lakes within the Indiana Dunes National Lakeshore. The NationaAuthorsDavid C. Lampe, E. Randall BaylessThe role of efflorescent sulfate salts in Indiana’s mine water quality
Efflorescent sulfate salts (ESS), which form from evaporating acid mine drainage and occur in a wide variety of environments, can significantly alter water quality and are, therefore, important considerations for remediation strategies at coal refuse sites. Many ESS, including melanterite, rozenite, siderotil, copiapite, halotrichite, coquimbite, epsomite, potash alum, and gypsum, are known to occAuthorsJeane Pope, E.R. Bayless, G. Olyphant, T. BranamHydrogeology and simulation of groundwater flow at the Green Valley reclaimed coal refuse site near Terre Haute, Indiana
The Green Valley reclaimed coal refuse site, near Terre Haute, Ind., was mined for coal from 1948 to 1963. Subsurface coal was cleaned and sorted at land surface, and waste material was deposited over the native glacial till. Approximately 2.7 million cubic yards of waste was deposited over 159 acres (92.3 hectares) in tailings ponds and gob piles. During 1993, the Indiana Department of Natural ReAuthorsE. Randall Bayless, Leslie D. Arihood, Kathleen K. FowlerAccuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator.
Borehole flowmeters that measure horizontal flow velocity and direction of groundwater flow are being increasingly applied to a wide variety of environmental problems. This study was carried out to evaluate the measurement accuracy of several types of flowmeters in an unconsolidated aquifer simulator. Flowmeter response to hydraulic gradient, aquifer properties, and well-screen construction was meAuthorsE.R. Bayless, Wayne A. Mandell, James R. UrsicPredicting unsaturated zone nitrogen mass balances in agricultural settings of the United States
Unsaturated zone N fate and transport were evaluated at four sites to identify the predominant pathways of N cycling: an almond [Prunus dulcis (Mill.) D.A. Webb] orchard and cornfield (Zea mays L.) in the lower Merced River study basin, California; and corn–soybean [Glycine max (L.) Merr.] rotations in study basins at Maple Creek, Nebraska, and at Morgan Creek, Maryland. We used inverse modeling wAuthorsBernard T. Nolan, Larry J. Puckett, Liwang Ma, Christopher T. Green, E. Randall Bayless, Robert W. MalonePesticide fate and transport throughout unsaturated zones in five agricultural settings, USA
Pesticide transport through the unsaturated zone is a function of chemical and soil characteristics, application, and water recharge rate. The fate and transport of 82 pesticides and degradates were investigated at five different agricultural sites. Atrazine and metolachlor, as well as several of the degradates of atrazine, metolachlor, acetochlor, and alachlor, were frequently detected in soil waAuthorsT.C. Hancock, Mark W. Sandstrom, J. R. Vogel, R.M.T. Webb, E.R. Bayless, J.E. BarbashSimulated fate and transport of metolachlor in the unsaturated zone, Maryland, USA
An unsaturated-zone transport model was used to examine the transport and fate of metolachlor applied to an agricultural site in Maryland, USA. The study site was instrumented to collect data on soil-water content, soil-water potential, ground water levels, major ions, pesticides, and nutrients from the unsaturated zone during 2002-2004. The data set was enhanced with site-specific information desAuthorsE.R. Bayless, P. D. Capel, J.E. Barbash, R.M.T. Webb, T.L.C. Hancock, D.C. LampeInfluences of the unsaturated, saturated, and riparian zones on the transport of nitrate near the Merced River, California, USA
Transport and transformation of nitrate was evaluated along a 1-km groundwater transect from an almond orchard to the Merced River, California, USA, within an irrigated agricultural setting. As indicated by measurements of pore-water nitrate and modeling using the root zone water quality model, about 63% of the applied nitrogen was transported through a 6.5-m unsaturated zone. Transport times fromAuthorsJoseph L. Domagalski, S.P. Phillips, E.R. Bayless, C. Zamora, C. Kendall, R.A. Wildman, J. G. HeringHydrologic Characteristics of a Managed Wetland and a Natural Riverine Wetland along the Kankakee River in Northwestern Indiana
Characteristics of ground-water/surface-water interactions were identified at a managed wetland (Hog Marsh) and a natural riverine wetland (LaSalle) located on the north and south sides, respectively, of the Kankakee River in northwestern Indiana. Hog Marsh covers about 390 hectares of the Grand Kankakee Marsh County Park. LaSalle covers about 100 hectares of the LaSalle State Fish and Wildlife ArAuthorsLeslie D. Arihood, E. Randall Bayless, William C. SidleEvaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Seven unsaturated-zone solute-transport models were tested with two data sets to select models for use by the Agricultural Chemical Team of the U.S. Geological Survey's National Water-Quality Assessment Program. The data sets were from a bromide tracer test near Merced, California, and an atrazine study in the White River Basin, Indiana. In this study the models are designated either as complex orAuthorsBernard T. Nolan, E. Randall Bayless, Christopher T. Green, Sheena Garg, Frank D. Voss, David C. Lampe, Jack E. Barbash, Paul D. Capel, Barbara A. BekinsUse of 87Sr/86Sr and δ11B to Identify Slag-Affected Sediment in Southern Lake Michigan
Slag is a ubiquitous byproduct of the iron-smelting industry and influences geochemistry and water quality in adjacent geologic units, ground and surface water. Despite extensive slag deposition along the Indiana shoreline of Lake Michigan, definitive evidence that slag has affected lakebed sediments has not been established. Concerns for the protection of water and ecosystem resources in the GreaAuthorsE. Randall Bayless, Thomas D. Bullen, John A. FitzpatrickMineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA
Slag is a ubiquitous byproduct of the iron- and steel-refining industries. In northwestern Indiana and northeastern Illinois, slag has been deposited over more than 52 km2 of land surface. Despite the widespread use of slag for fill and construction purposes, little is known about its chemical effects on the environment. Two slagdisposal sites were examined in northwestern Indiana where slag was dAuthorsE.R. Bayless, M. S. SchulzNon-USGS Publications**
Webb, R.M., M.E. Wieczorek, B.T. Nolan, T.C. Hancock, M.W. Sandstrom, J.E. Barbash, E.R. Bayless, R.W. Healy, and J.I. Linard, 2008, Variations in pesticide leaching related to land use and unsaturated zone: Journal of Environmental Quality, v. 37, 1145-1157.Nolan, B.T., L.J. Puckett, L. Ma, C.T. Green, E.R. Bayless, and R.W. Malone, 2010, Predicting unsaturated zone nitrogen mass balances in agricultural settings of the United States: Journal of Environmental Quality, v. 39, 1051-1065.Ebraheem, A.M., Hamburger, M.W., Bayless, E.R., and N.C. Krothe, 1990, A study of acid mine drainage using earth resistivity measurements. GROUNDWATER,v. 28, no. 3, p. 361-368.Olyphant, G.A., Bayless, E.R., and D. Harper, 1992, Seasonal and weather-related controls on solute concentrations and acid drainage from coal-refuse deposit in southwestern Indiana, U.S.A.. Journal of Contaminant Hydrology, v. 7, p. 219-236.Bayless, E.R., and G.A. Olyphant, 1993, Acid-generating salts and their relationship to the chemistry of ground water and strom runoff at an abandoned mine site in southwestern Indiana. Journal of Contaminant Hydrology,v.12, p. 313-328.**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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