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Browse subcollection Wisconsin Groundwater Research and Monitoring Program Reports

217 matches.

Armstrong, David E.; Shafer, Martin M.; Dean, Kirk E. Role of mobile colloids in the transport of chemical pollutants in groundwaters (1992)

Mobile colloids in groundwater enhance the transport of chemicals which sorb to particle surfaces. This study addressed the potential for colloid-mediated transport in Wisconsin aquifers by developing fundamental data on colloid concentrations and properties in representative systems. The aquifers examined included those classified as fractured dolomite, sorted sand, and calcareous till, all highly toxic and relatively unperturbed. A broad range of characterization methods were applied to whole groundwater and colloid concentrates prepared by ultracentrifugation and ultrafiltration. Colloid sorption charateristics were probed with a 14C-labeled PCB congener. Colloid concentrations ranged from 200 to 700 µg liter-1, and seasonal variations were noted in at least two systems. Mass-size distributions were typically broad, with shallow maxima in the 30 to 50 and 400 to 1000 nm size intervals. Scanning electron microscopy/energy dispersive x-ray analysis (SEM/EDX) and elemental analysis revealed that larger colloids are domintated by clay and silica particles. Smaller particles, however, were more difficult to categorize. The organic matter component of colloid isolates was high, whereas concentrations of colloidal iron were generally low. Electrophoretic mobilities of colloidal particles were consisitent with a model of colloid particles with a sorbed surface coating of organic matter. Three-phase patitioning experiments with 2,2',4,4' -tetrachlorobiphenyl (2,2',4,4' -TCBP) revealed that association with colloids can be significant, with up to 23% colloidally bound at natural colloid mass levels. Calculated partition coefficients for colloidal particles ranged from 1.1 x 10 5 to 4.4 x 10 5. Using a retardation factor approach it was estimated that the presence of mobile colloids in the aquifers, on average, increases the mobility of 2,2',4,4' -TCBP by 10%.

Bahr, Jean Marie; Chambers, Lucy W.; Raue, Lynn; Rustad, Rod; Huettl, Terrance Transport of agricultural contaminants in sand aquifers affected by drainage ditches (1991 [covers July 1990-September 1991])

The objectives of the project described in this report were to develop an improved understanding of the hydrologic and chemical factors affecting the fate of agricultural contaminants in sand aquifers and to evaluate the effectiveness of drainage ditches as passive barriers to contaminant migration. These objectives were addressed through detailed field studies conducted in the vicinity of an agricultural drainage ditch. The field studies included extensive sampling and hydraulic testing to characterize hydrogeologic and chemical properties, a conservative tracer experiment to delineate flow paths and groundwater velocities, and a reactive tracer experiment to evaluate the rate of in-situ denitrification. The field studies were accompanied by evaluations of existing models of ditch capture depth and aquifer dispersivity. At the field site, variations in hyraulic conductivity appear to generate stratification of flow and of groundwater chemistry. Comparison of hydraulic conductivity measured by slug tests with grain size distributions determined for vibracore and auger samples provides the basis for evaluating magnitudes of hyraulic conductivity variations within the aquifer. These variations can be used to estimate the anisotropy ration. Chemical signatures, particulartly the calcium/magnesium ratio, may be useful as "natural tracers" for mapping flow lines at the field site.

Bahr, Jean Marie; Parent, Laura An improved hydrogeologic model for the Token Creek Watershed: final report to the Wisconsin Department of Natural Resources (2001)

Chesters, Gordon; Levy, Jonathan; Read, Harry W.; Gustafson, Daniel P. Distribution, transport and fate of major herbicides and their metabolites (1993 [covers 1989-1991])

A field study was initiated around an atrazine-contaminated private dairy-farm well to investigate sources and extent of contamination from atrazine and its metabolites in the shallow glacial till aquifer and to relate the distribution of the contaminants to the ground-water flow system. Area landuse is dairy farming with typical rotations of corn and alfalfa; soils are predominantly silt loams. The shallow groundwater system is dominated by downward vertical hydraulic gradients and water from the till aquifer discharges to the bedrock aquifer. Where downward gradients exist it is possible to predict travel time (TT) and mean horizontal distance travelled (MHD) to vairous maonitoring wells. The MHDs to many wells are small, and atrazine residue concentrations result from pesticide application and handling nearby. According to the Darcy TT estimates, once water reaches the water table, it takes decades to reach some of the deeper wells. Tritium-interpreted ages suggest that at least part of the water at contaminated wells is > 7 yr old even in wells screened near the water table. Such long travel times indicate that responses of groundwater quality to atrazine-use restrictions will be slow.

Chesters, Gordon; Read, Harry W. Renovation of pesticide contaminated rinse waters: Number 491 (1993 [covers 1992])

Eaton, Timothy T. (Timothy Theodore) Verification and characterization of a fracture network within the Maquoketa Shale Confining Unit, southeastern Wisconsin: final report prepared for the Wisconsin Department of Natural Resources (2001)

Hoopes, John A.; Rashad, Salwa M.; Tsay, Tswn-Syau Near source transport of contaminants in heterogeneous media (1995)

Waste spills, landfill and storage facility leaks, and recharged surface waters introduce substances over small areas to groundwater. Resulting substance distributions generally exhibit spatial and temporal vaiability due to geologic and source property variations. Knowledge of the transport and fate of contaminants in the subsurface environment is vital to successful groundwater quality management efforts that aim to protect "clean" groundwater and clean up "contaminated" groundwater. Defining the flow pattern (velocity magnitude and temporal and spatial variations) is key to determining contaminant concentration distributions and rates of movement.

Kim, Jae Y. Retardation of organic compound movement in landfills by shredded tires (1996 [covers 1993-1994])

Knobeloch, Lynda Health effects of arsenic-contaminated drinking water (2002)

Yesiller, Nazli; Edil, Tuncer B.; Benson, Craig H. Final report: verification technique to evaluate integrity of well seals: Number 94-2 (October 1994)

An ultrasonic nondestructive testing technique has been developed to assess the integrity of well seals. The pulse-echo inspection technique was used to evaluate the quality of the bond between a casing and a seal. The study was conducted in two phases. The first phase was conducted to develop a measurement algorithm. In this phase, a planar arrangement of casing materials and seals was employed. The second phase consisted of the design, construction, and evaluation of a probe for downhole testing.

Adams, Teresa M.; Bosscher, Peter J.; Joeres, Erhard F.; Chung, Chen-hua; Kim, Kye; Majmudar, Nirav; Tang, Agatha Integrated decision support for wellhead protection (1994)

A Geographic Information System (GIS) application named WELLHEAD is described. It integrates geographic data on highways, townships, and hydrography on flowing and standing water and wetlands with geographic subsurface information from drilling logs and strata samples. To illustrate the application and utility of WELLHEAD, data from Dane County, Wisconsin has been used to allow hydrogeologists, geologists, geotechnical engineers, and water chemists pursuing pollution control strategies to retrieve and view subsurface data in graphical form. Interactive options allow users to display information in different perspectives.

Aiken, James S.; Mickelson, David M. Three-dimensional characterization of hydraulic properties of a coarse glacial outwash deposit (1995)

Glacial outwash deposits form important aquifers throughout the northern United States and Canada. They provide large groundwater yields because of their generally high hydraulic conductivity. However, their high conductivity also allows them to rapidly transmit contaminants. The threat of contamination to water supply wells has stirred interest in better understanding the heterogeneity within these aquifers as a way to predict contaminent movement. Heterogeneity within geologic materials is often conceptualized as one or more high conductivity lenses or layers within a matrix of lower conductivity material. When a contaminant is relesed in an aquifer of this type, it flows preferentially within these lenses. Identification of these preferential flow paths and the geologic processes that control their districution is critical to predicting contaminant movement and mitigating the impact of contaminants on water resources and, thus, protecting public drinking water supplies. The heterogeneity of a gravelly outwash deposit located in southern Wisocnsin was examined by detailed mapping and numerical modeling. The mapping was conducted on a scale typical of point-source contaminant release (a scale of 1 to 10's of meters). Most hydrogeologic field studies at this scale attempt to infer geologic heterogeneity from measurement of aquifer properties and limited borehole sampling.

Anderson, Marc A. Removal of As(III) and As(V) in contaminated groundwater with thin-film microporous oxide adsorbents (2002 [covers July 2000-June 2002])

Anderson, Mary P. Groundwater-lake interaction: response to climate change Vilas County, Wisconsin (2002 [covers July 2001-June 2002])

Bravo, Hector R. Groundwater flow and heat transport in wetlands : transient simulations and frequency-domain analysis (2001 [covers July 1998- June 2000])

Bundy, Larry Gene; Widen, P. B. Management of sweet corn processing wastes to protect groundwater quality (1996 [covers 1992-1993])

Results from the first 2 years of this study to determine appropriate application rates for sweet corn processing wastes indicate that land application for management of waste materials is a feasible approach. Agronomic responses of field corn to applications of up to 200 tons/acre of sweet corn residue were positive. Plant emergence, plant height, dry matter yields, and grain yields were increased by increasing rates of residue application. Yield responses to residue rate occurred even where there was no response to fertilizer N, suggesting that the residue additions provide beneficial effects other than contributing N. High soil N contributions at the experimental site prevented yield response to added N.

Cherkauer, Douglas S.; LaCosse, Craig J. Causes of historical changes in groundwater recharge rates in southeastern Wisconsin (2003 [covers July 1999-June 2001])

Christensen, E. R.; Cherkauer, Douglas S. In situ removal of iron, manganese, and radium from groundwater (1994)

The project was undertaken to determine if Radium (Ra) coprecipitates with iron (Fe) and manganese (Mn) during in situ oxidation of groundwater and whether there are locations in Wisconsin where the coicidence of these elements in aquifers would make the process a viable treatement option. Concentration of Fe and Mn in public groundwater supplies are sufficiently high to be nuisances and warrant removal in many locations. However, in situ oxidation tratement is effective only in unconsolidated Quaternary deposits. Known occurrences of high Ra (>5 pci/liter) have been mapped, but are extremely spotty. The only area where high Fe and Mn coincides with known high levels of Ra is a region between Marathon and Adams Counties, although the Fe and Mn are highest in the glacial aquifer and the Ra is in the crystalline and sandstone aquifers. In situ oxidation could be effective in this region and is already in use at Rib Mountain. For the overall area defined, Ra-rich water would need to be drawn from the bedrock aquifers, aerated, and injected in the glacial aquifer. Other areas of the state might have suitable conditions for in situ treatment, but Ra data are too sparse to tell.

Collins, Mary Lynne Perille Monitoring: evaluation of the abundance, diversity, and activity of methanotroph populations in groundwater, July 1998-June 2000 (2001 [covers July 1998-June 2000])

Dodson, Stanley Effect of clean and polluted groundwater on reproduction and development on Daphnia (2002 [covers July 2001-June 2002])

Dripps, Weston Temporal and spatial variability of natural groundwater recharge (2001 [covers July 2000-June 2001])

Eaton, Timothy T. (Timothy Theodore) Hydraulic conductivity and specific storage of the Maquoketa shale (2001 [covers July 1998-December 2000])

Edil, Tuncer B.; Benson, Craig H. Compatibility of containment systems with mine waste liquids (2001 [covers July 1999-June 2001])

Grundl, Timothy J., 1953- Adsorptive behavior of atrazine and alachlor in organic-poor sediments (1995)

A sediment mixing approach was taken to systematically vary the organic carbon (oc) and clay content (cm) as a suite of organic-poor, clay-rich sediments. Organic carbon content ranged from 3.2 to 0.4% and clay content ranged from 24 to 51%. Atrazine and alachlor were shown to sorb to both naturalorganic carbon and clay minerals. Partition coefficients to natural organic carbon (Koc) were found to be 196 and 436 liters/kg organic carbon for atrazine and alachlor, respectively. Partition coefficients to the clay fraction were found to be 1.8 and 3.0 liters/kg clay for atrazine and alachlor, respectively. Retardation factors calculated using partition coefficients that ignore numerical phase sorption are low by factors of 2.6 to 2.8 in the subsoils used in this study.

Grundl, Timothy J., 1953- Effects of complex mixtures of chemicals in leachates on the transport of pollutants in groundwater (1997)

There has been an increasing interest in the effects of changes in the composition of the pore fluids on the sorptive process. This growing body of literature shows that the effective solubility of organic compounds is changed by the presence of other organic molecules. The presence of naturally occurring organic compounds has been shown to increase the solubility of a variety of organic pollutants including PCBs, PAHs, DDT, and others.

Harris, Robin F. Bioremediation of herbicide-contaminated soil and water (1995)

The contamination of soils, sediments, groundwater and surface waters by herbicides poses major cleaup problems. This project focuses on atrazine, but involves development of a bioremediation protocol applicable for herbicides. Atrazine is one of the most commonly detected organic contaminants in groundwater throughout Wisconsin. The report describes initial experiments evaluating a conceptual computer model used to establish experimental methodology and design for selective enrichment of aerobic mixed microbial cultures capable of accelerated destruction of atrazine. Preliminary studes have focused on development of analytical procedures to determine the concentration of atrazine and its metabolites, ammonium, and microbial biomass. Values derived from these experiments have been used to determine intitial input parameters for the computer model using Pseudomonas sp. strain D. Recoveries of atrazine by gas chromatography were variable (74 to 123%). Recoveries of cyanuric acid using high pressure liquid chromatography (HPLC) were 100.0 ± 0.3%. HPLC was the method of choice to detect atrazine metaolites. Pseudomanas sp. strain D, under ultimately nitrogen-limiting conditions, had an average specific growth rate of 0.27 ± 1.5 grams of protein produced per mole of nitrogen consumed. Pseudomonas sp. strain D, under ultimately carbon-liimiting conditions, had an average specific growth rate of 0.34 ± 0.02 1/hr, 45.5 ± 4.3% protein content, and specific growth yield of 40.6 ± 13.5 grams of protein produced per mole of nitrogen consumed. Values from both growth experiments were explained by the model, thereby verifying the model's usefulness.

Jansen, John Time domain electromagnetic induction survey of eastern Waukesha County and selected locations (2000 [covers July 1999-June 2000])

Li, Lin; Eycholt, Gerald R.; Benson, Craig H. Groundwater modeling: semi-analytical approaches for heterogeneity and reaction networks (2001)

Reactive transport modeling for heterogeneous aquifers is challenging and computationally intensive. While numerical packages allow simulation of multiple species transport with aquifer heterogeneity, run times on high speed PCs and workstations make many jobs impractical. Stream tube approaches are computationally efficient numerical methods, and offer significate advantages in run time over more numerical methods.

Li, Zhaohui Admicelle-catalyzed reductive dechlorination of perchloroethylene (PCE) by zero valent iron: project completion report (2001 [covers July 1999-June 2001])

Lowery, Birl; Fermanich, Kevin; Grant, Steve; McSweeney, Kevin; Kusow, Wayne Nitrate movement through the unsaturated zone of a sandy soil in the lower Wisconsin River Valley (1995)

Nitrate (NO³) contamination of groundwater has been well documented. Nonpoint sources resulting from fertilizer use in agriculture are often to blame for much of this contamination. The research presented in this report was conducted to determine the rate at which nitrogen (N) moves through the root zone to the vadose zone of soils and the groundwater under a sandy soil along the Lower Wisconsin River Valley (LWRV). Rainfall was greater than normal during the 1990 growing season; several large storms caused deep percolation of water and NO³. The largest storm (7cm) occurred immediately following N fertilizer application, creating a worst-case scenario with respect to NO³ leaching. As a result of this storm, appreciable increases in NO³-N in soil-solution occurred as deep as 250 cm (8 ft) in the 12 days following N application. A six-ford increase in NO3 -N concentrations was found in groudwater samples collected adjacent to the research plots 2 months after nitrogen fertilization.

Meigs, L. C.; Bahr, Jean Marie Tracer study in a complex three-dimensional flow system (1994)

An ongoing series of natural gradient tracer tests are being conducted in Wisconsin's central sand plain, a region of thick sandy glacial outwash. The initial motivation for the tracer tests was to determine the flow path around a drainage ditch in order to evaluate the role of ditches in limiting the spread of agricultural contamination. The tests were also designed to permit a detailed evaluation of the tracer movement within the aquifer. These tracer tests involve the simultaneous introduction of bromide and iodide tracers, each at a different depth, up-gradient of the ditch. The path of the tracer is monitored by frequent synoptic sampling from a dense three-dimensional array of multilevel sampling wells.

Norman, John M.; Brye, Kristofor R. Field monitoring of drainage and nitrate leaching from managed and unmaged ecosystems (2001 [covers July 1999-June 2001])

Potter, Kenneth W.; Bowser, Carl J.; Amann, Mary Ann; Bradbury, Kenneth R. Estimating the spatial distribution of groundwater recharge rates using hydrologic, hydrogeologic and geochemical methods (1995 [covers August 1993])

Rabinowitz, Harvey Z. Economic effects of groundwater contamination on real estate (1995)

The effect of property contamination has been considerable in the real estate sector; other factors are transitory. Overbuilding is absorbed, difficulties in obtaining financing become less restrictive; and onerous taxes are moderated. Contamination has affected commercial real estate transactions including sales, leases, financing and assessments, and participants (single-family dwellings are different). Standard real estate forms have been modified; loan underwriting criteria now include hazards; specialists have been added to commercial real estate organizations; laws require notification and action; and technical firms involved in investigations and cleanup have increased. Legal problems with sites may be as devestating as cleanup costs. Many transactions have stopped due to contractual difficulties. For instance, some owners may require indemnification from the purchaser, i.e., they want to avoid future involvement with the site. The purchaser's attorney usually advises against acceptance. Even after cleanup and inspection the buyer still not provide indemnification. The owner may also want such a clause. Financial institutions may require such warranties before committing morgages. Owners may want to sell property "as is" at a discounted price -- but without inspections. Effects of this issue on real estate change as the implications of hazardous material filter through the industry. Future effects may include: Lowering the assessed value of contaminated property for tax purposes; changing the law affecting existing substances not now considered hazardous; developing specialized zoning and building regulations in fragile areas; and allocating cost of cleanup. The trend is for tougher choices to be made in the future. Some properties cost more to clean up than their market value. Owners, lenders, operators, tenants, heirs, and governments do not want involvement with such sites and will give up their interests, creating "orphaned properties." Sites are tainted with suspicion until proved immaculate and remediated sites are always suspect. Sales transaction are inevitably delayed by: 1. Inspections; 2. contractual language about contamination discovered in the future; and 3. difficulty of aggreeing on a fair price. Standard contracts are being developed for commercial and residential real estate to deal with new situations.

Stoor, R. W.; Armstrong, D. E.; Rolfhus, K.; Cleckner, L.; Krabbenhoft, David P. Importance of groundwater in production and transport of methylmercury in Lake Superior tributaries (2002)

Turyk, Nancy B.; Shaw, Byron H.; Russelle, Michael P. Remediation of soil and groundwater using effectively and ineffectively nodulated alfalfa (2002 [covers July 2000 -June 2002])

Brasino, John Sheldon A simple stochastic model predicting conservative mass transport through the unsaturated zone into ground water: [DNR-001] (c1986)

Postle, Jeffrey K.; Brey, Keven M. Results of the WDATCP groundwater monitoring for pesticides: [DNR-002] (1988)

Friedman, Marci A. Volatile organic compounds in groundwater and leachate at Wisconsin landfills: [DNR-004a] ([1988])

Battista, Janet R.; Connelly, Johnston P. VOC contamination at selected Wisconsin landfills: sampling results and policy implications: [DNR-004b] (1989)

Greer, B. A. Volatile organic compounds (VOCs) in small community wastewater disposal systems using soil absorption: [DNR-005] (1987)

Sucht, Marianna West Bend area road salt use study: [DNR-008] (1990)

Shaw, Byron H.; Turyk, Nancy B. Effects of barnyard management practices on groundwater quality in the central sands of Wisconsin: [DNR-009] (1992)

Cruciani, Cynthia L.W.; Cherkauer, Douglas S. The prediction of nitrate contamination potential using known hydrogeologic properties: [DNR-010] (1987)

Tinker, John R. Nitrate contamination in west-central Wisconsin with emphasis on Mill Run First Edition subdivision: [DNR-011] (1986)

Bradbury, Kenneth R.; Blanchard, Margaret C.; Muldoon, Maureen A. Hydrogeology and groundwater geochemistry in fractured dolomite, northeastern Wisconsin: [DNR-012] (1988)

Wiersma, James H.; Stieglitz, Ronald D. Lead migration from contaminated sites--Door County, Wisconsin: [DNR-013] (1989)

Goodman, Iris Graphical and statistical methods to assess the effect of landfills on groundwater quality: [DNR-014a] (1987)

Fisher, Sarah R.; Potter, Kenneth W. Methods for determining compliance with groundwater quality regulations at waste disposal facilities: [DNR-014b] (1989)

Paul, Duane G.; Palmer, Carl D.; Cherkauer, Douglas S. The effect of construction, installation, and development techniques on the performance of monitoring wells in fine-grained glacial tills: [DNR-016] (1987)

Parsons, Laurie Field investigation of groundwater impacts of absorption pond systems used for wastewater disposal: [DNR-017a] (1987)

Hunger, Carolyn The occurrence of volatile organic compounds in wastewater, sludges and groundwater at selected wastewater treatment plants in Wisconsin: [DNR-018] (1988)

Portle, Thomas L. Fate and mobility of radium-226 in municipal wastewater sludge following agricultural landspreading: a survey: [DNR-019] ([1987])

Schwalbe, John; Sauer, David Filtration preservation study of groundwater samples: [DNR-021a] (1987?)

Norenberg, Chris; Standridge, Jon Groundwater survey shows little evidence of bacterial contamination near rapid infiltration wastewater treatment system: [DNR-021b] (1989?)

Kendy, Eloise; Bradbury, Kenneth R. Hydrogeology of the Wisconsin River Valley in Marathon County, Wisconsin: [DNR-022] (1988)

Doran, F. J. Treatment of cheese processing wastewater by ridge and furrow disposal - nitrogen transformation: [DNR-023] (1985)

Hydro-Search, Inc. Environmental investigation of the city of Two Rivers landfills, Manitowoc County, Wisconsin: [DNR-024] (1986)

Miller Engineers Hydrogeologic investigation and groundwater quality assessment report: Havenwoods State Forest: [DNR-028] (1988)

Saltes, Jack Groundwater qualitiy and laundromat wastewater: Summit Lake, Wisconsin: [DNR-029] (1987)

Lantz, William; Detroit, Dan; Jerow, Tom; LeRoy, Gary; Smith, Ted; Gothblad, Bob; Cruthoff, Bob; Arendash, Luke; Dryer, Bill Report on groundwater contamination at the Flambeau Paper Corporation spent sulfite liquor disposal site: [DNR-030] (1987?)

Krohn, Charles J. Monitoring of volatile organic compounds (VOCs) in Tomah, Wisconsin: [DNR-031a] (1988)

Evans, William J. Hydrogeological investigation of VOC contaminated private wells near Hudson, Wisconsin: [DNR-031b] (1985)

Edil, Tuncer B. Sealing characteristics of sodium bentonite slurries for water wells: [DNR-034] (1987)

[McKinley, W.] Barron County nitrate study: [DNR-037] (1987)

Meisner, Lorraine F. Mutagenic effects of selected toxicants found in Wisconsin's ground water: [DNR-038] (1990)

Bubenzer, Gary; Converse, J.C.; Patoch, J.W. Downward movement of water below barnyard grass filter strips - case studies: [DNR-039] (1988)

Holman, David 1987 volatile organic compound (VOC) testing project in Rock County, Wisconsin: [DNR-040] (1990)

Marathon County Health Department Volatile organic compound contamination of private water supplies adjacent to abandoned landfills in Marathon County: [DNR-041] (1988?)

Peerenboom, Daniel Investigation of large scale subsurface soil absorption systems: [DNR-042] (1989)

Becker, Gregory T. Characterization of groundwater impacts at an above ground petroleum storage terminal: [DNR-043] (1987)

Stoll, Richard C. Lead concentration variabilities of private water supplies located in Door County, Wisconsin: [DNR-044] (1988)

DeLuca, Deborah B. Analytical determination of atrazine, alachlor and their selected degradation products in contaminated groundwater : implications for Wisconsin groundwater standards: [DNR-047] (1990)

Bailey, Fred Plover area nitrate study 1986: [DNR-048] (1986)

Davidson, Donald M.; Brown, B.A. (Boyd A.) Final report on assessment of geologic controls on groundwater flow and distribution in precambrian bedrock, central Wisconsin, using remote sensing and geophysical analysis: [DNR-049] (1989)

Bohling, Geoffrey C. A ground penetrating radar study of water table elevation in a portion of Wisconsin's central sand plain: [DNR-050] (1988)

Taylor, Robert W.; Mursky, Gregory Mineralogical and geophysical monitoring of naturally occurring radioactive elements in selected Wisconsin aquifers: [DNR-051] (1990)

Chesters, Gordon; Simsiman, Geronimo V.; Fathulla, R.N.; Alhajjar, B.J.; Harris, Robin F.; Harkin, John M.; Levy, Jonathan Degradation of atrazine, alachlor, metolachlor in soils and aquifer materials: [DNR-052] (1990)

Berndt, James; Shaw, Byron H. Evaluation of the effect of stormwater disposal on groundwater quality: [DNR-053] (1989?)

Fitzgerald, Charles Naturally occurring radionuclides in groundwater of north central Wisconsin: [DNR-054] (1990)

Heitman, Mike; Shaw, Byron H. Column leaching study of six pesticides, nitrate, and chloride through four Wisconsin soils: [DNR-055] (1994)

Schwalbe, John Research and data analysis of groundwater contamination from municipal rapid infiltration land disposal systems: [DNR-056] (1990)

LeMasters, Gary S.; Doyle, Douglas J. Grade A dairy farm well water quality survey: [DNR-058] (1989)

Curwen, David; Kraft, George J.; Osborne, Thomas; Shaw, Byron H. Demonstration of low input strategies for potato/vegetable production on irrigated sands: [DNR-059] ([date unknown])

Kenter, A.W.; Madison, Frederick William, 1937- Groundwater quality investigation of selected towns in Jefferson County, Wisconsin: [DNR-060] (1989?)

Edil, Tuncer B.; Berthouex, P. Mac (Paul Mac), 1940-; Park, J.K.; Stanstrom, L.; Zelmanowitz, S. Effects of volatile organic compounds on clay landfill liner performance: [DNR-061] (1988)

Daniel, T.; Wietersen, R. Effect of soil type on atrazine and alachlor movement thruogh the unsaturated zone: [DNR-062] (1989)

Osborne, Thomas J.; Sorensen, Jenifer L.; Knaack, Mark R.; Mechenich, David J.; Travis, Michael J. Designs for wellhead protection in central wisconsin; case studies of the town of Weston and City of Wisconsin Rapids: [DNR-063] (1989)

Osborne, Thomas J.; Sorensen, Jenifer L.; Knaack, Mark R.; Mechenich, David J.; Travis, Michael J. Appendix to Designs for wellhead protection in central wisconsin; case studies of the town of Weston and City of Wisconsin Rapids: [DNR-063] (1989)

Bradbury, Kenneth R.; McGrath, Robert W. Field study of atrazine contamination of groundwater in Dane County, Wisconsin: [DNR-064] (1992)

Chesters, Gordon; Levy, Jonathan; Gustafson, Daniel P.; Read, Harry W.; Simsiman, Geronimo V.; Liposcak, Diane C.; Xiang, Yang Sources and extent of atrazine contamination of groundwater at grade a dairy farms in Dane County, WI: [DNR-065] (1991)

Lowery, Birl; McSweeney, Kevin Effect of soil type, selected best management practices, and tillage on atrazine and alachlor movement through the unsaturated zone: [DNR-066] (1992)

Shaw, Byron H.; Arntsen, Peter; VanRyswyk, William Subdivision impacts on groundwater quality: [DNR-067] (1993)

Cowell, Susan E.; LeMasters, Gary S. Follow up to the Grade A dairy farm well water quality survey: [DNR-070] ([1992])

Shaw, Byron H.; Trapp, Paul Corn fertility management and nitrate leaching to groundwater in sandy soils: [DNR-071] (1993)

Hutchison, Keith Report on the bacteriological water quality monitoring of Door County variance and special casing approval wells: [DNR-072] (1992)

Rayne, T. W. Variation of hydraulic conductivity in sandy glacial till: site variation versus methodology.: [DNR-074] (1992)

The sandy till of the Green Bay Lobe in Wisconsin is mapped as the Horicon Formation, a lithostratigraphic term that implies that certain properties of the unit can be recognized everywhere it occurs. A compilation of a limited number of hydrogeological studies of the Horicon Formation by Rodenbeck (1988) showed that hydraulic conductivity varies over three orders of magnitude in a medium that appears texturally and lithologically homogeneous. The overall objectives of this study were: (1) to determine if this appartent heterogeneity is real of a result of different testing methods at different scales, and (2) to examine the effects of the scale of measurement on different methods of determining hydraulic conductivity in such materials.

Bahr, Jean Marie; Chambers, Lucy W. Field evaluation of drainage ditches as controls on the migration of agricultural chemicals in groundwater: [DNR-075] (1990)

Tinker, John R. Nitrogen isotope monitoring at unsewered subdivisions: [DNR-076] ([date unknown])

Sonzogni, William C.; Eldan, Michael; Lawrence, J. Robert Analytical determination of pesticide metabolites and carrier chemical in Wisconsin wells: [DNR-077] (1992?)

Wilson, Thomas J.; Blonde, Greg Waupaca County groundwater testing and educational program final first year report: [DNR-079a] (1991)

Wilson, Thomas J.; Blonde, Greg Waupaca County groundwater testing and educational program phase II report: [DNR-079b] (1992)

Posner, J.L.; Bubenzer, Gary; Madison, Frederick William, 1937- Crop rotations effects on leaching potential and groundwater quality: [DNR-080] (1993?)

Madison, Frederick William, 1937- Study of nitrate and atrazine concentrations in groundwater from agricultural use on a sandy, irrigated corn field in the Lower Wisconsin River Valley: [DNR-081] (1997?)

Shaw, Byron H.; Turyk, Nancy B. A comparative study of nitrate-N loading to groundwater from mound, in ground pressure and at grade septic systems: [DNR-082] (1992)

Portle, Tom; Dunn Jamie Groundwater quality impacts from the storage of sludge and septage: [DNR-085] (1995)

Burkel, Rebecca S. Arsenic as a naturally elevated parameter in water wells in Winnebago and Outagamie Counties, Wisconsin.: [DNR-087] (1993)

McSweeney, Kevin Spatial attributes of the soil-landscape-groundwater systems of the lower Wisconsin River valley: [DNR-088] (1993)

Bradbury, Kenneth R.; Muldoon, Maureen A. Preliminary comparison of a discrete fracture model with a continuum model for groundwater movement in fractured dolomite: [DNR-089] (1993)

Mudrey, M. G., Jr.; Bradbury, K. R. Evaluation of NURE hydrogeochemical groundwater data for use in Wisconsin groundwater studies: [DNR-090] (1993)

Mudrey, M.G.; Bradbury, Kenneth R. Distribution of radionuclides in Wisconsin groundwater: [DNR-091] ([date unknown])

Pugh, Laura; Gear, Barbara Assessment of Wisconsin's groundwater monitoring plan program for active non-approved landfills (1985-1990): [DNR-092] (1992)

Stoll, Richard; Hronek, Michael GIS mapping of groundwater contaminant sources quality and contamination susceptibility for Door County: [DNR-093] (1995)

Shaw, Byron H.; Osesek, Steven Evaluation of denitrification systems for improving groundwater quality from on-site waste disposal systems: [DNR-094] (1993)

Graham, Joseph; Shaw, Byron H. Design and optimization of two recirculating sand filters for the removal of nitrogen and organic chemicals from domestic wastewater: [DNR-095] (1998)

Hickey, William; Bubenzer, Gary Remediation of soils contaminated by leaking underground storage tanks by vapor extraction and in situ biostimulation: [DNR-096] ([date unknown])

Gilbert, Thomas A.; Oman, Bruce S. Nitrogen removal in renovated municipal wastewater rapid infiltration basins: [DNR-097] ([date unknown])

Svavarsson, Gunnar; Fauble, Philip Investigation of groundwater impacts at construction and demolition waste landfills: [DNR-098a] (1995)

Fauble, Philip; Svavarsson, Gunnar Investigation of groundwater impacts at yard waste compost sites: [DNR-098b] (1995)

Muldoon, Maureen A.; Bohn, Michael F.; Madison, Frederick William, 1937-; Richardson, N.H. Hydrogeologic and land-use controls on atrazine detections in Dane County, Wisconsin: [DNR-099] (1994)

Bridson, Michelle S.; Bohn, Michael F.; Madison, Frederick William, 1937- Evaluation of groundwater susceptibility assessment systems in Dane County, Wisconsin: [DNR-100] (1994)

Muldoon, Maureen A.; Bradbury, Kenneth R. Tracer study for characterization of groundwater movement and contaminant transport in fractured dolomite: [DNR-101] (1998)

Armstrong, David E.; Cowell, Susan E. Urban stormwater infiltration: assessment and enhancement of pollutant removal: [DNR-102] ([date unknown])

Harkin, John M.; Chen, Chen-Peng Long-term transformation and fate of nitrogen in mound-type soil absorption systems for septic tank effluent: [DNR-103] (1995)

Stoll, Richard; Hronek, Mike Integrated computerized mapping of point source contaminants and physical environmental characteristics to protect and manage groundwater quality in northeast Wisconsin: [DNR-105] (1993)

Ostergren, Charles; Connelly, Jack Slow pumping versus field filtering analysis with respect to implementation: [DNR-106] (1994)

Postle, Jeffrey K. Results of the Wisconsin Department of Agriculture, Trade and Consumer Protection groundwater monitoring for pesticides: [DNR-107] (1996)

Potter, Kenneth W. et al Groundwater hydrology of an agricultural watershed: [DNR-109] (1995)

Burkel, Rebecca S.; Stoll, Richard C. Naturally occurring arsenic in sandstone aquifer water supply wells of northeastern Wisconsin: [DNR-110] (1995)

Sonzogni, William C.; Schleis, David M.; West, Lynn E. Factors effecting the determination of radon in groundwater: [DNR-111] (1995)

Vandenbrook, James P. 1994 groundwater survey for alachlor in southern Wisconsin -- final report: [DNR-112] (1994)

Bradbury, K. R.; Rayne, T. W.; Muldoon, M. A.; Roffers, P. D. Application of a discrete fracture flow model for wellhead protection at Sturgeon Bay, Wisconsin: [DNR-113] (1998)

Svavarsson, Gunnar; Connelly, Jack; Kuehling, Hank Comparison of low flow pumping and bailing for VOC groundwater sampling at landfills: [DNR-114] (1997?)

Stites, Will; Kraft, George J. Agrichemical loading to groundwater under irrigated vegetables in the central sand plain: [DNR-116] (1997)

Standridge, Jon; Barman, Miel; Sonzogni, William C. Characterization of E. coli and total coliform organisms isolated from Wisconsin waters and reassessment of their public health significance: [DNR-117] (1997?)

Dunning, Charles P.; Ellefson, Bernard R.; Zaporozec, Alexander Collection of hydraulic and geologic data to improve the quality of the Wisconsin observation-well network: [DNR-118] (1996)

Bundy, Larry Gene Direct and residual effects of land-applied sweet corn processing wastes on nitrate loss to groundwater: [DNR-120] (1996)

Bradbury, Kenneth R.; Swanson, Susan; Oelkers, E. Delineation of groundwater capture zones for municipal wells in Dane County, Wisconsin: [DNR-121] (1996)

Walker, John F.; Saad, David A.; Krohelski, James T. Optimization of ground-water withdrawal in the lower Fox River communities, Wisconsin: [DNR-122] (1998)

Muldoon, Maureen A.; Madison, Frederick William, 1937-; Lowery, Birl Variability of nitrate loading and determination of monitoring frequency for a shallow sandy aquifer, Arena, Wisconsin: [DNR-123] ([date unknown])

Schroeder, Ruth; Stieglitz, Ronald D.; Wiersma, James H. Evaluation of shallow soil absorption fields receiving recirculated sand filter wastewater effluent: [DNR-125] (1997)

Stoll, Richard; Hronek, Michael GIS as a tool to prioritize environmental releases, integrate their management and alleviate their public threat: [DNR-126] (1999)

Weissbach, Annette; Heinen, Liz; Lauridsen, Keld Study of well construction guidance for arsenic contamination in northeast Wisconsin: [DNR-127] (1998)

Muldoon, Maureen A.; Stocks, Diane L.; Simo, J.A. (Juan Antonio) Stratigraphic controls on distribution of hydraulic conductivity in carbonate aquifers: [DNR-129] (1999)

Givens, Robert D. Evaluation of the use of DUMPStat to detect the impact of landfills on groundwater quality: [DNR-130] ([1997])

Schubert, Carla; Knobeloch, Lynda; Anderson, Henry; Warzecha, Chuck; Kanarek, Marty Nitrate-contaminated drinking water followback study: [DNR-131] (1997)

Eaton, Timothy T.; Bradbury, Kenneth R.; Evans, Thomas J. Characterization of the hydrostratigraphy of the deep sandstone aquifer in southeastern Wisconsin: [DNR-134] (1999)

Rauman, James M.; Ellefson, Bernard R.; Zaporozec, Alexander Evaluation of geology and hydraulic performance of Wisconsin ground-water monitoring wells: [DNR-135] (1999)

Riewe, Tom Testing grout seals with an ultrasonic probe: [DNR-136] (1999)

Bahr, Jean Marie; Potter, Kenneth W.; Swanson, Susan; Schwar, Mike Groundwater-surface water interactions in the Nine Springs watershed: [DNR-137] (1999)

Bradbury, Kenneth R.; Eaton, Timothy T. (Timothy Theodore) Preliminary model design and literature review for the sandstone aquifer system in southeastern Wisconsin: [DNR-138] (1998)

Eaton, Timothy T. (Timothy Theodore); Bradbury, Kenneth R. Evaluation of the confining properties of the Maquoketa formation in the SEWRPC region of southeastern Wisconsin: [DNR-139] (1998)

Crunkilton, Ronald L.; Johnson, Todd (Todd Milo), 1956- Acute and chronic toxicity of nitrate to brook trout (Salvelinus fontinalis): [DNR-140] ([200-])

Grundl, Timothy J., 1953- Makoqueta shale as radium source for the Cambro-Ordovician Aquifer in Eastern Wisconsin: final report submitted to the Wisconsin Department of Natural Resources: [DNR-141] (2000)

Muldoon, Maureen A.; Underwood, Chad; Cooke, Michele; Simo, J.A. (Juan Antonio) Mechanical controls on fracture development in carbonate aquifers: implications for groundwater flow systems: final report to the Wisconsin Department of Natural Resources: [DNR-142] ([2001])

Hickey, William J.; Bahr, Jean M.; Schreiber, Madeline; Zwolinski, Michele; Taglia, Peter Analysis of microbiological and geochemical processes controlling biodegredation of aromatic hydrocarbons in anaerobic aquifers: [DNR-143] (2001)

Borchardt, Mark A. Viral contamination of household wells near disposal sites for human excreta: Final report prepared for the Wisconsin Department of Natural Resources: [DNR-144] (2002)

Hunt, Randy; Steuer, Jeff Delineating a spring's recharge area using numerical groundwater flow modeling and geochemical investigation: [DNR-145] (2000)

Anderson, Martha C.; Bland, William L.; Kraft, George J. A groundwater model for the central sands of Wisconsin: Assessing the environmental and economic impacts of irrigated agriculture: [DNR-146] ([2000?])

Lee, Taeyoon; Benson, Craig H. Using waste foundry sands as reactive media in permeable reactive barriers: [DNR-147] (2002)

Bradbury, Kenneth R.; Rayne, Todd W.; Muldoon, Maureen A. Field verification of captures zones for municipal wells at Sturgeon Bay, Wisconsin: [DNR-148] (2000)

Batten, William G.; Zaporozec, Alexander; Ellefson, Bernard R. Improvement of Wisconsin groundwater monitoring network: [DNR-149] (2000)

Bradbury, Kenneth R.; Dripps, Weston; Hankley, Chip; Anderson, Mary P.; Potter, Kenneth W. Refinement of two methods for estimation of groundwater recharge rates: [DNR-150] (2000)

Connelly, J.; Dinsmore D.; Hegeman, T.; Schulz, J.; Shaw, B.; Stephens, R. Evaluating options for changing groundwater monitoring requirements for landfills to reduce mercury used by laboratories: [DNR-151] (2002)

Gotkowitz, M. B.; Simo, J.A. (Juan Antonio); Schreiber, Madeline Geologic and geochemical controls on arsenic in groundwater in northeastern Wisconsin: [DNR-152] (2003)

This project involved geologic and hydrogeologic approaches to investigate the release of naturally occurring arsenic concentrations to well water in a confined sandstone aquifer in northeastern Wisconsin. Previous work identified sulfide mineralization, concentrated at the contact of the Sinnipee Group and the underlying St. Peter sandstone (Ancell Group), as the primary source of arsenic to the aquifer. Geologic mapping presented in the report indicates a high degree of variability in the distribution of iron-sulfide mineralization at the Sinnipee-St. Peter contact and a high degree of variability of arsenic within the mineralization occur in outcrops in the St. Peter sandstone fomr north to south along the Fox River Valley. At a smaller scale, we observed trends of increasing arsenic concentration in the St. Peter sandstone where the sandstone pinches out. Arsenic concentrations in non-mineralized areas of the sandstone average less than 5 parts per million (ppm), while concentrations in mineralized zones vary form 10s to 100s ppm. Alteration of iron-sulfide mineralization is apparently followed by the precipitation of goethite, an iron oxide. In many cases, the iron oxide weathering products of the sulfide mineralization have higher associated arsenic concentrations that the iron-sulfide mineralization.

Zuniga, Dennis Natural attenuation of VOC's at Wisconsin landfills: a preliminary evaluation: [DNR-153] (2002)

Aldstadt, J. H. Development of analytical methods for comprehensive chemical and physical speciation or arsenicals in groundwater: [DNR-154] (November 2002 [covers September 2000-September 2002])

Collins, Mary Lynne Perille, 1949- New approaches to the assessment of microbes in groundwater: Application to bioremediation and detection of pathogens: [DNR-155] ([2002])

O’Connor, Kelley; McGrath, Marcy; Lauridsen, Keld An analysis of arsenic replacement wells to determine validity of current Department of Natural Resources guidance: [DNR-156] (2004)

Braatz, Laurel A. A study of fecal indicators and other factors impacting water quality in private wells in Door County, Wisconsin: [DNR-159] (2004)

Swanson, Susan K.; Bahr, Jean M. An investigation of the hydrogeologic conditions responsible for springs in a glaciated terrain: [DNR-161] (2000)

Rheineck, Bruce; Postle, Jeffrey K. Chloroacetanilide herbicide metabolites in Wisconsin groundwater: [DNR-162] (2000)

Gotkowitz, Madeline B. Report on the preliminary investigation of arsenic in groundwater near Lake Geneva, Wisconsin: [DNR-163] (2000)

Standridge, Jon; Olstadt, Jeremy; Sonzogni, William Passage of microorganisms in septic tank effluents through mound sand in a controlled laboratory environment: [DNR-164] ([2001])

Hunt, Randy; Borchardt, Mark Susceptibility of La Crosse municipal wells to enteric virus contamination from surface water contributions: [DNR-165] (2003)

Sonzogni, William C.; Standridge, Jonathan; Bussen, Michelle Preservation and survival of E. coli in well water samples submitted for routine analyses: [DNR-166] ([2002])

Sonzogni, William C. Preservation and survival of E. coli in well water samples submitted for routine analyses: [DNR-167a] (2002 [covers April 2001-April 2002])

Degnan, Alan J. Development and application of a plating media for detection of Helicobacter pylori in water: [DNR-167b] (2002)

In the U.S. alone, about 5,000,000 people are diagnosed annually with ulcers, 1,000,000 are hospitalized, 40,000 undergo surgery, and 6,500 die from ulcer-related complications (Poms, 2001: Levin, 1998). Once thought to be a result of stress and/or diet, ulcers are now almost exclusively attributed to infection with the bacteria Helicobacter pylori. Laboratory diagnosis of H. pylori has become a standard procedure in the management of dyspeptic patients. Although transmission of the organism through the fecal/oral route is the assumed infection route, the possible mechanisms of human infection such as food, person to person contact, water or fomites are not clearly understood. There are few reports in the literature suggesting transmission of H. pylori to humans via groundwater (Hegarty, 1999; Hulten, 1995 & 1998). Methods of detection used in those studies were relatively complex and costly (polymerase chain reaction; immunomagnetic separation) and unfortunately, didn't determine if the detected organisms were in fact viable or infectious. The work reported here focused on the development of a microbiological plating media that selects viable H. pylori organisms from samples containing mixed microbial populations, which could then be used for routine screening of ground and/or surface water for the presence of H. pylori. Efforts have resulted in a media formulation that allows the growth of Helicobacter while subsequently excluding common waterborne microbial background contaminants such as gram positive cocci and bacilli, enterobacteriaceae, gram negative bacilli, fungi, and pseudomonads. The laboratory-tested plating media was used to survey a cross section of Wisconsin groundwaters to further evaluate the efficacy of the media for recovering H. pylori from water samples and to begin a data base of H. pylori occurrence.

Dunning, C.P.; Bannerman, R.T. Monitoring contaminant transport from a stormwater infiltration facility to ground water: [DNR-168] (2003)

Karthikeyan, K.G.; Bleam, William F. Occurrence of antibiotics in wastewater effluents and their mobility in soils: a case study for Wisconsin: [DNR-169] (2003)

Grundl, Timothy J., 1953- Delineation of high salinity conditions in the Cambro-Ordovician aquifer of eastern Wisconsin: [DNR-170] (2002)

The salinity and major ion content of the water contained within the Cambro-Ordovician aquifer of eastern Wisconsin was investigated. Data obtained form the Wisconsin Department of Natural Resources Drinking Water Database in conjunction with stratigraphic data obtained from the Wisconsin Geologic and Natural History Survey was used to compile an overall view of geochemical conditions within the aquifer. All data was entered into GIS format (ArcView 3.2). Salinity of water pumped from the aquifer averages 473 ppm and is more saline to the north and east. The spatial variance in salinity is almost entirely due to a 1:1 molar increase in calcium and sulfate, probably due to dissolution of gypsum. In spite of this increase in calcium-sulfate character, the aquifer is dominated by calcium-bicarbonate water except in isolated locations within Calumet and Outagamie Counties where the water is calcium-sulfate in character. An attempt was made to correlate the percentage of the well open to a particular stratigraphic interval and salinity, however no correlation was found. Most wells within the study area do not exhibit large changes in salinity over time. Only 10 wells have salinity changes that exceed 10 ppm/year and of these, 5 exhibit decreasing salinities. Stratigraphic data are used to show the usage pattern of the Cambro-Ordovician aquifer. Maps are presented that show, on a relative basis, form which stratigraphic unit water is being pumped.

Kraft, George J.; Browne, B. A.; DeVita, W. M.; Mechenich, D. J. Nitrate and pesticide residue penetration into a Wisconsin central sand plain aquifer: [DNR-171] (2004)

Sonzogni, W.C.; Clary, A.; Bowman, G.; Standridge, J.; Johnson, D.; Gotkowitz, M. Importance of disinfection on arsenic release in wells: [DNR-172] ([2005?])

Jansen, John; Taylor, Robert W. Time domain electromagnetic induction survey of sandstone aquifer in the Lake Winnebago area: [DNR-173] (2002 [covers July 2001-June 2002])

Bahr, Jean M.; Gotkowitz, Madeline B.; Root, Tara L. Arsenic contamination in southeast Wisconsin: Sources of arsenic and mechanisms of arsenic release: [DNR-174] (2004)

Strauss, John C. Evaluation of enzyme linked immunosorbent assay (ELISA) for diaminoatrazine analysis of water samples in comparison to gas chromatography: [DNR-175] ([200-])

Arndt, Michael F.; West, Lynn A study of the factors affecting the gross alpha measurement and a radiochemical analysis of some groundwater samples from the state of Wisconsin exhibiting an elevated gross alpha activity: [DNR-176] (2004?)

Bradbury, Kenneth R.; Bahr, Jean M.; Wilcox, Jeffrey D. Monitoring and predictive modeling of subdivision impacts on groundwater in Wisconsin: [DNR-178] ([date unknown])

Anderson, Marc A. Field and laboratory validation of photoactivated adsorption for removal of arsenic in groundwaters: [DNR-179] (2004)

Trethewey, Hilary Gittings; Bahr, Jean M. Hydrogeologic controls on springs in the Mukwonago River watershed, SE Wisconsin: Final report to the Wisconsin Department of Natural Resources: [DNR-180] ([2005])

Masarik, K. C.; Kraft, G. J.; Mechenich, D. J.; Browne, B. A. Groundwater pollutant transfer and export from a Northern Mississippi Valley Loess Hills watershed: [DNR-181] (2007)

Fermanich, Kevin; Zorn, Michael; Stieglitz, Ronald; Waltman, Christian Mapping and characterization of springs in Brown and Calumet counties: [DNR-183] (2006)

Grote, K.R. Identification and characterization of springs in west-central Wisconsin: [DNR-184] ([date unknown])

Swanson, Susan K.; Bradbury, Kenneth R.; Hart, David J. Assessing the ecological status and vulnerability of springs in Wisconsin: [DNR-185] ([2007])

Kraft, George J.; Clancy, Katherine; Mechenich, David J. A survey of baseflow discharges in the western Fox-Wolf watershed: [DNR-186] (2008)

Thompson, Anita; Nimmer, Mike; Misra, Debasmita Groundwater mounding and contaminant transport beneath stormwater infiltration basins: [DNR-189] (2007)

Markham, Lynn; Dunning, Chuck Comprehensive planning in Wisconsin: centralizing access to ground-water information for use in comprehensive planning: [DNR-190] (2007)

Hart, David; Bradbury, Kenneth R.; Feinstein, Daniel; Tikoff, Basil Mechanisms of groundwater flow across the Maquoketa formation: [DNR-191] ([2006])

Gotkowitz, Madeline; Roden, Eric; Schreiber, Madeline; Shelobolina, Evgenya Mineral transformation and release of arsenic to solution under the oxidizing conditions of well disinfection: [DNR-192] (2007)

Skalbeck, John D.; Koski, Adrian J.; Peterson, Matthew T. Precambrian basement topography using 3D modeling of gravity and aeromagnetic data in southeastern Wisconsin and Fond Du Lac County: [DNR-193] (2008)

Hooyer, Tom Groundwater recharge through a thick sequence of fine-grained sediment in the Fox River Valley, east-central Wisconsin: [DNR-194] (2007)

Kluender, S.; McMahon, K.D.; Pedersen, Joel A. Use of human and bovine adenovirus for fecal source tracking: [DNR-195] (2008)

Clancy, Katherine; Kraft, George J.; Mechenich, David J. Knowledge development for groundwater withdrawal management around the Little Plover River, Portage County, Wisconsin: [DNR-196] (2009)

Bradbury, Kenneth R.; Borchardt, Mark A.; Gotkowitz, Madeline; Hunt, Randall J. Assessment of virus presence and potential virus pathways in deep municipal wells: [DNR-197] (2008)

Muldoon, Maureen A.; Bradbury, Kenneth R. Assessing seasonal variations in recharge and water quality in the silurian aquifer in areas with thicker soil cover: [DNR-198] (2010)

Mickelson, David M.; Anderson, Mary P.; Dunkle, Kallina Hydrostratigraphic and groundwater flow model : Troy Valley glacial aquifer, southeastern Wisconsin: [DNR-199] (2008)

Hooyer, Thomas S.; Hart, David J.; Bradbury, Kenneth R.; Batten, William G. Investigating groundwater recharge to the Cambrian-Ordovician aquifer through fine-grained glacial deposits in the Fox River Valley: [DNR-200] (2008)

Lowery, Birl; Bland, William L. Water balance modeling for irrigated and natural landscapes in central Wisconsin: [DNR-201] (2009)

Kraft, George J.; Mechanich, David J. Groundwater pumping effects on groundwater levels, lake levels, and streamflows in the Wisconsin Central Sands: [DNR-202] (2010)

Hemming, Jocelyn D. C.; Mieritz, Mark; Hedman, Curtis; Havens, Sonya; Shafer, Martin Assessing the potential of hormones from livestock operations to contaminate groundwater: [DNR-203] ([date unknown])

Luczaj, John. A.; Hart, David. J. Drawdown in the northeast groundwater management area (Brown, Outagamie, and Calumet Counties, WI): [DNR-204] (2009)

Bradbury, K. R.; Borchardt, Mark A.; Gotkowitz, Madeline B.; Spencer, Susan K. Human viruses as tracers of wastewater pathways into deep municipal wells: [DNR-205] (2010)

Long, Sharon C.; Stietz, Jamie R. Project to develop and validate a molecular assay for Rhodococcus coprophilus: [DNR-206] (2009)

Soldat, Doug; Stier, John Opportunities for reducing water use by Wisconsin golf courses: final report: [DNR-207] ([date unknown])

Kraft, George; Mechenich, David J.; Haucke, Jessica Information support for groundwater management in the Wisconsin central sands: [DNR-208] (2012)

Diebel, Matthew W.; Ruesch Aaron S.; Menuz, Diane; Stewart, Jana; Westenbroek, Stephen M. Ecological limits of hydrologic alteration in Wisconsin streams: [DNR-209] (2014)

The authors of this report have deemed some of their original research to be faulty. Please refer to the revised report in this collection for updated information.

Diebel, Matthew W.; Ruesch Aaron S.; Menuz, Diane; Stewart, Jana; Westenbroek, Stephen M. Ecological limits of hydrologic alteration in Wisconsin streams: [DNR-209-Revised] (2015)

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