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Publications

Cyanotoxin mixture models

Relating environmental variables and toxin co-occurrence to human exposure risk

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Organic contaminants assessed in 305 streams

Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams

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Using infrared imagery to map agricultural drainage

Overall results and key findings on the use of UAV visible-color, multispectral, and thermal infrared imagery to map agricultural drainage

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Utilizing locally available slag to treat waste or agricultural waters

Geochemical Characterization of Iron and Steel Slag and Its Potential to Remove Phosphate and Neutralize Acid

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Polycyclic Aromatic Hydrocarbons

PAH in Streambed Sediment in Great Lakes Tributaries

PAH - Great Lakes

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Predictive models for Escherichia coli concentrations at inland lake beaches and relationship of model variables to pathogen detection

Predictive models, based on environmental and water quality variables, have been used to improve the timeliness and accuracy of recreational water quality assessments, but their effectiveness has not been studied in inland waters. Sampling at eight inland recreational lakes in Ohio was done in order to investigate using predictive models for Escherichia coli and to understand the links between E.
Authors
Donna S. Francy, Erin A. Stelzer, Joseph W. Duris, Amie M. G. Brady, John H. Harrison, Heather E. Johnson, Michael W. Ware
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center, Ohio Water Microbiology Laboratory

Development of flood profiles and flood-inundation maps for the Village of Killbuck, Ohio

Digital flood-inundation maps for a reach of Killbuck Creek near the Village of Killbuck, Ohio, were created by the U.S. Geological Survey (USGS), in cooperation with Holmes County, Ohio. The inundation maps depict estimates of the areal extent of flooding corresponding to water levels (stages) at the USGS streamgage Killbuck Creek near Killbuck (03139000) and were completed as part of an update t
Authors
Chad J. Ostheimer
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Methods for estimating selected low-flow statistics and development of annual flow-duration statistics for Ohio

This report presents the results of a study to develop methods for estimating selected low-flow statistics and for determining annual flow-duration statistics for Ohio streams. Regression techniques were used to develop equations for estimating 10-year recurrence-interval (10-percent annual-nonexceedance probability) low-flow yields, in cubic feet per second per square mile, with averaging periods
Authors
G. F. Koltun, Stephanie P. Kula
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center, StreamStats

Identifying nutrient reference sites in nutrient-enriched regions-Using algal, invertebrate, and fish-community measures to identify stressor-breakpoint thresholds in Indiana rivers and streams, 2005-9

Excess nutrients in aquatic ecosystems can lead to shifts in species composition, reduced dissolved oxygen concentrations, fish kills, and toxic algal blooms. In this study, nutrients, periphyton chlorophyll a (CHLa), and invertebrate- and fishcommunity data collected during 2005-9 were analyzed from 318 sites on Indiana rivers and streams. The objective of this study was to determine which invert
Authors
Brian J. Caskey, Aubrey R. Bunch, Megan E. Shoda, Jeffrey W. Frey, Shivi Selvaratnam, Robert J. Miltner
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Relations between DNA- and RNA-based molecular methods for cyanobacteria and microcystin concentration at Maumee Bay State Park Lakeside Beach, Oregon, Ohio, 2012

Water samples were collected from Maumee Bay State Park Lakeside Beach, Oregon, Ohio, during the 2012 recreational season and analyzed for selected cyanobacteria gene sequences by DNA-based quantitative polymerase chain reaction (qPCR) and RNA-based quantitative reverse-transcription polymerase chain reaction (qRT-PCR). Results from the four DNA assays (for quantifying total cyanobacteria, total M

Authors
Erin A. Stelzer, Keith A. Loftin, Pamela Struffolino
By
Water Resources Mission Area, Kansas Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Ohio Water Microbiology Laboratory

Analysis and simulation of regional subsidence accompanying groundwater abstraction and compaction of susceptible aquifer systems in the USA

Regional aquifer-system compaction and land subsidence accompanying groundwater abstraction in susceptible aquifer systems in the USA is a challenge for managing groundwater resources and mitigating associated hazards. Developments in the assessment of regional subsidence provide more information to constrain analyses and simulation of aquifer-system compaction. Current popular approaches to simul
Authors
Devin L. Galloway, Michelle Sneed
By
Water Resources Mission Area, California Water Science Center, Ohio-Kentucky-Indiana Water Science Center

Phase II modification of the Water Availability Tool for Environmental Resources (WATER) for Kentucky: The sinkhole-drainage process, point-and-click basin delineation, and results of karst test-basin simulations

This report describes Phase II modifications made to the Water Availability Tool for Environmental Resources (WATER), which applies the process-based TOPMODEL approach to simulate or predict stream discharge in surface basins in the Commonwealth of Kentucky. The previous (Phase I) version of WATER did not provide a means of identifying sinkhole catchments or accounting for the effects of karst (in
Authors
Charles J. Taylor, Tanja N. Williamson, Jeremy K. Newson, Randy L. Ulery, Hugh L. Nelson, Peter J. Cinotto
By
Ohio-Kentucky-Indiana Water Science Center

The Midwest Stream Quality Assessment

In 2013, the U.S. Geological Survey (USGS) National Water-Quality Assessment Program (NAWQA) and USGS Columbia Environmental Research Center (CERC) will be collaborating with the U.S. Environmental Protection Agency (EPA) National Rivers and Streams Assessment (NRSA) to assess stream quality across the Midwestern United States. The sites selected for this study are a subset of the larger NRSA, imp
Authors
Peter C. Van Metre, Jeffrey W. Frey, Ellen Tarquinio
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Estimation of speciated and total mercury dry deposition at monitoring locations in eastern and central North America

Dry deposition of speciated mercury, i.e., gaseous oxidized mercury (GOM), particulate-bound mercury (PBM), and gaseous elemental mercury (GEM), was estimated for the year 2008–2009 at 19 monitoring locations in eastern and central North America. Dry deposition estimates were obtained by combining monitored two- to four-hourly speciated ambient concentrations with modeled hourly dry deposition vel
Authors
L. Zhang, P. Blanchard, D.A. Gay, E.M. Prestbo, M.R. Risch, D. Johnson, J. Narayan, R. Zsolway, T.M. Holsen, E. K. Miller, M.S. Castro, J.A. Graydon, V.L. St. Louis, J. Dalziel
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Science to support the understanding of Ohio's water resources

Ohio’s water resources support a complex web of human activities and nature—clean and abundant water is needed for drinking, recreation, farming, and industry, as well as for fish and wildlife needs. The distribution of rainfall can cause floods and droughts, which affects streamflow, groundwater, water availability, water quality, recreation, and aquatic habitats. Ohio is bordered by the Ohio Riv
Authors
Kimberly Shaffer, Stephanie Kula, Phil Bambach, Donna Runkle
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Construction of estimated flow- and load-duration curves for Kentucky using the Water Availability Tool for Environmental Resources (WATER)

Flow- and load-duration curves were constructed from the model outputs of the U.S. Geological Survey's Water Availability Tool for Environmental Resources (WATER) application for streams in Kentucky. The WATER application was designed to access multiple geospatial datasets to generate more than 60 years of statistically based streamflow data for Kentucky. The WATER application enables a user to gr
Authors
Michael D. Unthank, Jeremy K. Newson, Tanja N. Williamson, Hugh L. Nelson
By
Ohio-Kentucky-Indiana Water Science Center

Microbial source tracking markers at three inland recreational lakes in Ohio, 2011

During the 2011 recreational season, samples were collected for E. coli and microbial source tracking (MST) marker concentrations to begin to understand potential sources of fecal contamination at three inland recreational lakes in Ohio - Buckeye, Atwood, and Tappan Lakes. The results from 32 regular samples, 4 field blanks, and 7 field replicates collected at 5 sites are presented in this report.

Authors
Donna S. Francy, Erin A. Stelzer
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center, Ohio Water Microbiology Laboratory