Iowa Water Science Center Publications

The publications listed here were written or co-authored by USGS Iowa Water Science Center personnel. The list includes U.S. Geological Survey reports, journal articles, conference proceedings, and published abstracts. Reports that are available online can be viewed by clicking on the linked icons: . To inquire about any of the publications, please send email to GS-W-IA_Info@usgs.gov.

Many older U.S. Geological Survey reports published by Iowa Science Center have been scanned and are now available online. These reports and others from through out the nation are available digitally on the U.S. Geological Survey Publications Warehouse http://pubs.er.usgs.gov.

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These abbreviations denote the respective U.S. Geological Survey report series:
USGS FS    -- U.S. Geological Survey Fact Sheet
USGS OFR  -- U.S. Geological Survey Open-File Report
USGS SIR   -- U.S. Geological Survey Scientific-Investigations Report
USGS WDR  -- U.S. Geological Survey Water-Data Report
USGS WRIR -- U.S. Geological Survey Water-Resources Investigations Report
USGS WSP  -- U.S. Geological Survey Water-Supply Paper

Search Iowa Publications:

Year	Citation	Abstract	PDF
2013	Maharjan, Bijesh, Korom, S.F., and Smith, E.A., 2013, Electron donor concentrations in sediments and sediment properties at the agricultural chemicals team research site near New Providence, Iowa, 2006–07: U.S. Geological Survey Data Series 737, 17 p.
2012	Garrett, J.D., 2012, Concentrations, loads, and yields of select constituents from major tributaries of the Mississippi and Missouri Rivers in Iowa, water years 2004–2008: U.S. Geological Survey Scientific Investigations Report 2012–5240, 61 p.
2012	Linhart, S.M., Nania, J.F., Sanders, C.L., Jr., and Archfield, S.A., 2012, Computing daily mean streamflow at ungaged locations in Iowa by using the Flow Anywhere and Flow Duration Curve Transfer statistical methods: U.S. Geological Survey Scientific Investigations Report 2012–5232, 50 p.
2012	Barnes, K.K., and Eash, D.A., 2012, Flood of August 11–16, 2010, in the South Skunk River Basin, central and southeast Iowa: U.S. Geological Survey Open-File Report 2012–1202, 27 p. with appendix.
2012	Christiansen, D.E., 2012, Simulation of daily streamflows at gaged and ungaged locations within the Cedar River Basin, Iowa, using a Precipitation-Runoff Modeling System model: U.S. Geological Survey Scientific Investigations Report 2012–5213, 20 p.
2012	Kalkhoff, Stephen J., Vecchia, Aldo V., Capel, Paul D., Meyer, Michael T., 2012, Eleven-Year Trend in Acetanilide Pesticide Degradates in the Iowa River, Iowa: Journal of Environmental Quality, Vol. 41 No. 5, p. 1566-1579
2012	Eash, D.A., and Barnes, K.K., 2012, Methods for estimating selected low-flow frequency statistics and harmonic mean flows for streams in Iowa: U.S. Geological Survey Scientific Investigations Report 2012–5171, 94 p.
2012	Christiansen, D.E., Hay, L.E., and Markstrom, S.L., 2012, Watershed scale response to climate change-Clear Creek Basin, Iowa: U.S. Geological Survey Fact Sheet 2011-3127, 6 p.
2012	Markstrom, S.L., Hay, L.E., Ward-Garrison, C.D., Risley, J.C., Battaglin, W.A., Bjerklie, D.M., Chase, K.J., Christiansen, D.E., Dudley, R.W., Hunt, R.J., Koczot, K.M., Mastin, M.C., Regan, R.S., Viger, R.J., Vining, K.C., and Walker, J.F., 2012, Integrated watershed-scale response to climate change for selected basins across the United States: U.S. Geological Survey Scientific Investigations Report 2011-5077, 143 p.
2012	Littin, G.R., 2012, Selected water-quality data from the Cedar River and Cedar Rapids well fields, Cedar Rapids, Iowa, 2006-10: U.S. Geological Survey Data Series 657, 32 p.
2012	McCarthy, K.A., Rose, C.E., and Kalkhoff, S.J., 2012, Environmental settings of the South Fork Iowa River basin, Iowa, and the Bogue Phalia basin, Mississippi, 2006-10: U.S. Geological Survey Scientific Investigations Report 2012-5021, 22 p.
2012	Daniel E. Christiansen, Steven L. Markstrom, Lauren E. Hay, 2011. Impacts of Climate Change on the Growing Season in the United States. Earth Interactions, Vol. 15, Iss. 33, pp. 1-17.
2012	Eash, D.A., 2012, Floods of July 23-26, 2010, in the Little Maquoketa River and Maquoketa River Basins, Northeast Iowa: U.S. Geological Survey Open-File Report 2011-1301, 45 p. with appendix.
2011	Barber, L.B., Antweiler, R.C., Flynn, J.L., Keefe, S.H., Kolpin, D.W., Roth, D.A., Schnoebelen, D.J., Taylor, H.E., Verplanck, P.L. 2011. Lagrangian mass-flow investigations of inorganic contaminants in wastewater-impacted streams: Environ. Sci. Technol., v. 45, p. 2575-2583.
2011	Barber, L.B., Keefe, S.H., Kolpin, D.W., Schnoebelen, D.J., Flynn, J.L., Brown, G.K., Furlong, E.T., Gray, J.L., Glassmeyer, S.T., Meyer, M.T., Sandstrom, M.W., Taylor, H.E., and Zaugg, S.D., 2011, Lagrangian sampling of wastewater treatment plant discharges into Boulder Creek, Colorado and Fourmile Creek, Iowa during the summer of 2003 and spring of 2005 - Hydrological and water-quality data: U.S. Geological Survey Open-File Report 2011-1054
2011	Battaglin, W.A., Sandstrom, M.W., Kuivila, K.M., Kolpin, D.W., Meyer, M.T. 2011. Occurrence of azoxystrobin, propiconazole, and selected other fungicides in U.S. streams, 2005-1006: Water, Air, & Soil Pollution, v. 218, p. 307-322.
2011	Coupe, Richard H., Kalkhoff, Stephen J., Capel, Paul D., and Gregoire, Caroline, 2011, Fate and transport of glyphosate and aminomethylphosphonic acid in surface waters of agricultural basins: Pest Management Science, 15 p., online in advance of print.  doi: 10.1002/ps.2212
2011	Heimann, D.C., Sprague, L.A., and Blevins, D.W., 2011, Trends in suspended-sediment loads and concentrations in the Mississippi River Basin, 1950-2009: U.S. Geological Survey Scientific Investigations Report 2011-5200, 33 p.
2011	Hirsch, R.M. and Ryberg, K.R., 2012. Has the magnitude of floods across the USA changed with global CO2 levels? Hydrolological Sciences Journal, 57 (1), 1-9.
2011	Hubbard, L., Kolpin, D.W., Kalkhoff, S.J., and Robertson, D.M., 2011, Nutrient and sediment concentrations and corresponding loads during the historic June 2008 flooding in eastern Iowa: Journal of Environmental Quality, vol. 40, p. 166-175.  doi: 10.2134/jeq2010.0257
2011	Kurwadkar, S.T., Adams, C.D., Meyer, M.T., Kolpin, D.W. 2011. Comparative mobility of sulfonamides and bromide tracer in three soils: J. Environ. Management, v. 92, p. 1874-1881.
2011	Novak, P.J., Arnold, W.A., Blazer, V.S., Halden, R.U., Klaper, R.D., Kolpin, D.W., Kriebel, D., Love, N.G., Martinovic-Weigelt, D., Patisaul, H.B., Synder, S.A., vom Saal, F.S., Weisbrod, A.V., Swackhammer, D.L. 2011. On the need for a national (U.S.) research program to elucidate the potential risks to human health and the environment posed by contaminants of emerging concern: Environ. Sci. Technol. v. 45, p. 3829-3830.
2011	Novak, P.J., Arnold, W.A., Blazer, V.S., Halden, R.U., Klaper, R.D., Kolpin, D.W., Kriebel, D., Love, N.G., Martinovic-Weigelt, D., Patisaul, H.B., Synder, S.A., vom Saal, F.S., Weisbrod, A.V., Swackhammer, D.L. 2011. Unite to assess contaminant risk: Nature, v. 471, p. 578.
2011	Su, H-C., Ying, G-G., Tao, R., Zhang, R-Q., Fogarty, L.R., Kolpin, D.W. 2011. Occurrence of antibiotic resistance and characterization of resistance genes and integrons in Enterobacteriaceae isolated from integrated fish farms in south China. J. Environ. Monitoring. v. 13, p. 3229-3236.
2010	Eash, David, 2010, Estimating flood frequency, in Mutel, C.F. ed., A watershed year, Anatomy of the Iowa floods of 2008: Iowa City, IA, University of Iowa Press., p. 61-70.
2010	Fischer, E.E., and Eash, D.A., 2010, Flood of June 8-9, 2008, Upper Iowa River, Northeast Iowa: U.S. Geological Survey Open-File Report 2010-1087, 17 p. with app.
2010	Buchmiller, R.C., and Eash, D.A., 2010, Floods of May and June 2008 in Iowa: U.S. Geological Survey Open-File Report 2010-1096, 10 p.
2010	Linhart, S.M., and Eash, D.A., 2010, Floods of May 30 to June 15, 2008, in the Iowa River and Cedar River Basins, eastern Iowa: U.S. Geological Survey Open-File Report 2010-1190, 99 p. with app.
2010	Kinney, C.A., Furlong, E.T., Kolpin, D.W., Zaugg, S.D., Burkhardt, M.R., Bossio, J.P., Werner, S.L. 2010. Earthworms: Diagnostic indicators of wastewater derived anthropogenic organic contaminants in terrestrial environments: In R. Holden (ed.) Contaminants of Emerging Concern: Ecotoxicological and Human Health Considerations. American Chemical Society Book Series Vol. 1048. Oxford University Press, New York, NY. Chapter 14, p. 297-317.
2010	Schultz, M.M., Furlong, E.T., Kolpin, D.W., Werner, S.L., Schoenfuss, H.L., Barber, L.B., Blazer, V.S., Norris, D.O., Vajda, A.M. 2010. Antidepressant pharmaceuticals in two U.S. effluent-impacted streams: Occurrence and fate in water and sediment, and selective uptake in fish neural tissue: Environ. Sci. Technol., v. 44, p. 1918-1925.
2010	Kolpin, D.W., Hornbuckle, K. 2010. What’s in your floodwaters? In C.F. Mutel (ed.) A watershed year, Anatomy of the Iowa floods of 2008. University of Iowa Press. Iowa City, Iowa. p. 155-161.
2010	Littin, G.R., and Schnoebelen, D.J., 2010, Selected water-quality data from the Cedar River and Cedar Rapids well fields, Cedar Rapids, Iowa, 1999–2005: U.S. Geological Survey, Data Series 494, 52 p.
2010	Kalkhoff, S.J., Stetson, S.J., Lund, K.D., Wanty, R.B., and Linder, G.L., 2010,.Perchlorate data for streams and groundwater in selected areas of the United States, 2004: U.S. Geological Survey Data Series 495, 43 p. with appendix.
2009	Haack, S.K., Duris, J.W., Fogarty, L.R., Kolpin, D.W., Focazio, M.J., Furlong, E.T., Meyer, M.T. 2009.Comparing wastewater chemicals, indicator bacteria concentrations, and bacterial pathogen genes as fecal pollution indicators: J. Environ. Qual., v. 38, p. 248-258.
2009	Kinney, C. A, Furlong, E. T.; Kolpin, D. W.; Burkhardt, M. R.; Zaugg, S. D.; Werner, S. L.; Bossio, J. P.; Benotti, M. J. 2009. Response to “Comment on ‘Bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure’”: Environ. Sci. and Technol., v. 43, p. 545-547.
2009	Battaglin, W.A., Kolpin, D.W., 2009, Contaminants of emerging concern: Introduction to a featured collection: J. Am. Water Res. Assoc., v. 45, p. 1-3.
2009	Bradley, P.M., Barber, L.B., Chapelle, F.H., Gray, J.L., Kolpin, D.W., McMahon, P.B. 2009. Biodegradation of 17b-estradiol, estrone, and testosterone in stream sediments: Environ. Sci. Technol., v. 43, p. 1902-1910.
2009	Watkinson, A.J., Murby, E.J., Kolpin, D.W., Costanzo, S.D. 2009. The occurrence of antibiotics in an urban watershed: From wastewater to drinking water: Sci. Total Environ., v. 407, p. 2711-2723.
2009	Barber, L.B., Keefe, S.H., LeBlanc, D.R., Bradley, P.M., Chapelle, F.H., Meyer, M.T., Loftin, K.A., Kolpin, D.W., Rubio, F. 2009. Fate of sulfamethoxazole, 4-nonyphenol, and 17b-estradiol in groundwater contaminanted by wastewater treatment plant effluent: Environ. Sci. Technol., v, 43, p. 4843-4850.
2009	Buszka, P.M., Yeskis, D.J., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., Meyer, M.T. 2009. Waste-indicator and pharmaceutical compounds in landfill leachate-affected ground water near Elkart, Indiana, 2000-2002: Bull. Environ. Contam. Toxicol., v. 82, p. 653-659.
2009	Walker, D.B., Paretti, N.V., Cordy, G., Gross, T.S., Zaugg, S.D., Furlong, E.T., Kolpin, D.W., Matter, W.J., Gwinn, J., McIntosh, D. 2009. Changes in reproductive biomarkers in an endangered fish species (bonytail chub, Gila elegans) exposed to low levels of organic wastewater compounds in a controlled experiment: Aquatic Toxicology, v. 95, p. 133-143.
2009	Ying, G.-G., Kookana, R.S., Kolpin, D.W. 2009. Occurrence and removal of pharmaceutically active compounds in sewage treatment plants with different technologies: J. Environ. Mon. v. 11, p. 1498-1505.
2009	Littin, G.R., and McVay, J.C., 2008, Water-quality and biological assessment of the Iowa River and tributaries within and contiguous to the Meskwaki Settlement of the Sac and Fox Tribe of the Mississippi in Iowa, 2006–07: U.S. Geological Survey Scientific Investigation Report 2009–5105, 41 p.
2009	Christiansen, Daniel E., 2009, Dye Tracer Tests to Determine Time-of-Travel in Iowa: U.S. Geological Survey Data Series 444, 9 p.
2008	Glassmeyer, S., Kolpin, D.W., Furlong, E.T., Focazio, M.T., 2008, Environmental presence and persistence of pharmaceuticals: An overview: in Fate of Pharmaceuticals in the Environment and in Water Treatment Systems, Diana S. Aga (ed), CRC Press, Taylor & Francis Books, p. 3-51.
2008	Bradley, P.M., L.B. Barber, D.W. Kolpin, P.B. McMahon, and F.H. Chapelle. 2008. Potential for 4-n-nonylphenol biodegradation in stream sediments. Environ. Toxicol. Chem. v. 28, n. 2, p. 260-265.
2008	Kinney, C.A., Furlong, E.T., Kolpin, D.W., Burkhardt, M.R., Zaugg, S.D., Werner, S.L., Bossio, J.P., Benotti, M.J., 2008, Bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure: Environ. Sci. Technol. v. 42, n. 6, p. 1863-1870.
2008	Barnes, K.K., Kolpin, D.W., Focazio, M.J., Furlong, E.T., Meyer, M.T., Zaugg, S.D., Haack, S.K., Barber, L.B., Thurman, E.M. 2008. Water-quality data for pharmaceuticals and other organic wastewater contaminants in ground water and in untreated drinking water sources in the United States, 2000-01: U.S. Geological Survey Open-File Report 2008-1293.
2008	Barnes, K.K., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B., 2008, A national reconnaissance of pharmaceuticals and other organic wastewater contaminants in the United States – I) Groundwater: Sci. Total Environ. v. 402, p. 192-200.
2008	Focazio, M.J., Kolpin, D.W., Barnes, K.K., Furlong, E.T., Meyer, M.T., Zaugg, S.D., Barber, L.B., Thurman, E.M., 2008, A national reconnaissance for pharmaceuticals and other organic wastewater contaminants in the Unites States – II) Untreated drinking water sources: Sci. Total Environ. v. 402, p. 201-216.
2008	Metcalfe, C.D., Boxall, A., Fenner, K., Kolpin, D.W., Servos, M., Silberhorn, E., Staveley, J. 2008. Exposure assessment of veterinary medicines in aquatic systems, In: Crane, M., A.B.A. Boxall and K. Barrett (Eds.), Veterinary Medicines in the Environment, CRC Press, Boca Raton, FL, USA, p. 57-96.
2008	Phillips, P.J., Stinson, B., Zaugg, S.D., Furlong, E.T., Kolpin, D.W., Esposito, K.M., Bodniewicz, B., Pape, R., Anderson, J., 2008, A multi-disciplinary approach to the removal of emerging contaminants in municipal wastewater treatment plans in New York State, 2003-2004: New York Water Environment Association Clearwaters, v. 38 no. 3, p. 48-59.
2008	Barber, L.B., Meyer, M.T., LeBlanc, D.R., Kolpin, D.W., Bradley, P.M., Chapelle, F.H., Rubio, F., 2008, Subsurface fate and transport of sulfamethoxazole, 4-nonylphenol, 17b-estradiol: in GQ07: Securing Groundwater Quality in Urban and Industrial Environments, IAHS Pub. No. 324, p. 133-139.
2008	Schnoebelen, D.J., 2008, Effectiveness of an alluvial wetland on improving ground-water quality near a municipal well field, Cedar Rapids, Iowa, 1998–2006: U.S. Geological Survey Scientific Investigation Report, 2008–5108, 29 p.
2008	Fischer, E.E., and Eash, D.A., 2008, Flood of May 6, 2007, Willow Creek, West-Central Iowa: U.S. Geological Survey Open File Report 2008–1229, 11 p. with Appendix.
2008	Christiansen, D.E., and Eash, D.A., 2008, Flood-plain study of the Upper Iowa River in the vicinity of Decorah, Iowa: U.S. Geological Survey Scientific Investigations Map 3005, 1 sheet.
2007	Bradley, P.M., Barber, L.B., Kolpin, D.W., McMahon, P.B., Chapelle, F.H., 2007, Biotransformation of caffeine, cotinine and nicotine in stream sediments: Implications for use as waste-water indicators: Environ. Toxic. Chem., v. 26, n. 6, p. 1116-1121.
2007	Costanzo, S.D., Watkinson, A.J., Murby, E.J., Kolpin, D.W., Sandstrom, M.W., 2007, Is there a risk associated with the insect repellent DEET (N,N-diethyl-m-toluamide) commonly found in aquatic environments?: Sci. Total Environ., v. 384, p. 214-220.
2007	Linhart, S. Mike and Lund, Kris D., 2006, Bathymetric contour maps of lakes surveyed in Iowa in 2004: U.S. Geological Survey Scientific Investigations Map 2949, 6 plates; metadata files.
2007	Linhart, S. Mike and Lund, Kris D., 2006, Bathymetric contour maps of lakes surveyed in Iowa in 2003: U.S. Geological Survey Scientific Investigations Map 2933, 4 sheets.
2006	Kolpin, D.W., Thurman, E.M., Lee, E.A., Meyer, M.T., Furlong, E.T., Glassmeyer, S.T., 2006, Urban contributions of glyphosate and its degradate AMPA to streams in the United States: Sci. Tot. Environ., v. 354, p. 191-197.
2006	Boxall, A.B.A., Sinclair, C.J., Kolpin, D.W., 2006, Potential risks of pesticide degradates to aquatic life: in Gilliom and others, The quality of our Nation’s waters – Pesticides in the Nation’s steams and ground water, 1992-2001, U.S. Geological Survey Circular 1291, p. 81.
2006	Scribner, E.A., Meyer, M.T., and Kalkhoff, S.J., 2006, Occurrence of Isoxaflutole, Acetamide, and Triazine Herbicides and Their Degradation Products in 10 Iowa Rivers Draining to the Mississippi and Missouri Rivers, 2004: U.S. Geological Survey Scientific Investigations Report 2006-5169, 84 p.
2006	Schnoebelen, D.J., Kolpin, D.W., Barber, LB., Furlong, E.T., Meyer, M.T., Skopec, M., 2006, Research plan and preliminary results – A field research site for emerging contaminants in Iowa: J. Iowa Acad. Sci., v. 113, p. 1-9.
2006	Burkholder, J., Libra, B., Weyer, P., Heathcote, S., Kolpin, D.W., Thorne, P.S., Wichman, M., 2006, Impacts of waste from concentrated animal feeding operations (CAFOs) on water quality: Environ. Health Perspectives, v. 115, n. 2, p. 308-312.
2006	Eash, David, 2006, Flood of May 23, 2004, in the Turkey and Maquoketa River Basins, northeast Iowa U.S. Geological Survey Open-File Report 2006-1067.
2006	Tucci, Patrick and McKay, R.M., 2006, Hydrogeology and Simulation of Ground-Water Flow in the Silurian-Devonian Aquifer System, Johnson County, Iowa: U.S. Geological Survey Scientific Investigations Report 2005-5266, 73 p.
2006	North Corridor Silurian-Devonian Aquifer Study Frequently Asked Questions
2006	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Littin, G.R., Linhart, S.L., Miller, V.E., and Housel, K.S.Water Resources Data, Iowa, Water Year 2005: USGS WDR-IA-05-1.
2005	Barnes, K.K., D.W. Kolpin, E.T. Furlong, S.D. Zaugg, M.T. Meyer, L.B. Barber, and M.J. Focazio. 2005. Studies examine contaminants: Pharmaceuticals, hormones and other organic wastewater contaminants in ground water resources. National Driller Magazine Vol. 26, No. 3, March 2005, p. 38-39.
2005	Mills, P.C., Kolpin, D.W., Scribner, E.A., Thurman, E.M., 2005, Herbicides and their degradates in shallow aquifers of Illinois – Spatial and temporal trends: J. Am. Wat. Res. Assoc., v. 41, p. 537-547.
2005	Sandstrom, M.A., Kolpin, D.W., Thurman, E.M., Zaugg, S.D., 2005, Widespread detection of N,N-diethyl-m-toluamide (DEET) in U.S. streams: Comparison with concentrations of pesticides, personal care products, and other organic wastewater compounds: Environ. Toxicol. Chem., v. 24, n. 5, p. 1029-1034.
2005	Battaglin, W.A., Kolpin, D.W., Scribner, E., Kuivila, K.K., Sandstrom, M.A., 2005, Glyphosate, other herbicides, and transformation products in Midwestern streams, 2002x: J. Am. Wat. Res. Assoc., v. 41, p. 323-332.
2005	Williams, J.D., Kolpin, D.W., 2005, Current topics in agricultural hydrology and water quality: Introduction: J. Am. Wat. Res. Assoc., v. 41, p. 243-244.
2005	Dietze, J.E., Scribner, E.A., Meyer, M.T., and Kolpin, D.W., 2005, Occurrence of antibiotics in water from 13 fish hatcheries, 2001-03: Intern. J. of Environ. Anal. Chem., v 85, n 15, p. 1141-1152.
2005	Glassmeyer, S.T., Furlong, E.T., Kolpin, D.W., Cahill, J.D., Zaugg, S.D., Werner, S.L., Meyer, M.T., Kryak, D.D., 2005, Transport of chemical and microbial compounds from known wastewater discharges: Potential for use as indicators of human fecal contamination: Environ. Sci. Technol., v. 39, p. 5157-5169.
2005	Scribner, E.A., Thurman, E.M., Goolsby, D.A., Meyer, M.T., Battaglin, W.A., Kolpin, D.W., 2005, Summary of significant results from studies of triazine herbicides and their degradation products in surface water, ground water, and precipitation in the midwestern United States during the 1990’s: U.S. Geological Survey Scientific Investigations Report 2005-5094.
2005	Phillips, P.J., Stinson, B., Zaugg, S.D., Furlong, E.T., Kolpin, D.W., Esposito, K.M., Bodniewicz, B., Pape, R., Anderson, J., 2005, A multi-disciplinary approach to the removal of emerging contaminants in municipal wastewater treatment plans in New York State, 2003-2004: Water Environment Federation WEFTEC 78th Annual Technical Exhibition and Conference, Conference Proceedings, Washington DC, November 2005, p. 5095-5124.
2005	Versteeg, D.J., Alder, A.C., Cunningham, V.L., Kolpin, D.W., Murray-Smith, R., and Ternes, T., 2005, Environmental exposure modeling and monitoring of human pharmaceutical concentrations in the environment, in Williams, R.T., ed., Human pharmaceuticals - assessing the impacts on aquatic ecosystems: SETAC PRESS, p. 71-110.
2005	Erwin, M.L., and Kalkhoff, S.J., 2005, South Fork Iowa River watershed selected for a national water-quality study: USGS FS 2005-3064, 2 p.
2005	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E. and Housel K.S., 2005, Water resources data Iowa, water year 2004, volume 1: surface water and precipitation: USGS WDR IA-04-1.
2005	Nalley, G.M., Linhart S.M., Littin G.R., Miller, V.E. and Housel K.S., 2005, Water resources data Iowa, water year 2004, volume 2: ground water and quality of precipitation: USGS WDR IA-04-2.
2004	Worrall F., and Kolpin, D.W. 2004. Aquifer vulnerability to pesticide pollution combining soil, land-use and aquifer properties with molecular descriptors. J. Hydrol. v. 293, p. 191-204.
2004	Kolpin, D.W., Schnoebelen, D.J., Thurman, E.M., 2004, Degradates provide insight to spatial and temporal distribution of herbicides in ground water: Ground Water, v. 42, n. 4, p. 601-608.
2004	Cahill J.D., Furlong E.T., Burkhardt M.R., Kolpin D.W., Anderson L.G. 2004, Determination of pharmaceutical compounds in surface- and ground-water samples by solid-phase extraction and high-performance liquid chromatography/electrospray ionization mass spectrometry: J. Chrom. A, v. 1041, p. 171-180.
2004	Focazio, M.J., Kolpin, D.W., and Furlong, E.T., 2004, Occurrence of human pharmaceuticals in water resources in the United States—A review, in Kummerer, K., ed., Pharmaceuticals in the environment—Sources, fate, effects, and risks: Berlin, Heidelberg, New York, Springer-Verlag, p. 91-106.
2004	Barnes, K.K., Christenson, S.C., Kolpin, D.W., Focazio, M.J., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B., 2004, Pharmaceuticals and other organic wastewater contaminants within a leachate plume downgradient of a municipal landfill: Ground Water Mon. Rem., v. 24, n. 2, p. 119-126.
2004	Cordy, G., Duran, N., Bower, H, Rice, R., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B., Kolpin, D.W., 2004, Do pharmaceuticals, pathogens, and other organic wastewater compounds persist when wastewater is used for recharge?: Ground Water Mon. Rem., v. 24, n. 2, p. 58-69.
2004	Mishra, A., Ray, C. and Kolpin, D.W., 2004, Use of qualitative and quantitative information in neural networks for assessing agricultural chemical contamination in domestic wells: J. Hydrologic Eng. Nov/Dec, p. 502-511.
2004	Kolpin, D.W., Skopec, M., Meyer, M.T., Furlong, E.T., Zaugg, S.D., 2004, Urban contribution of pharmaceuticals and other organic wastewater contaminants to streams during differing flow conditions: Sci. Tot. Environ., v. 328, p. 119-130.
2004	Kolpin, D.W., Battaglin, W.A., Meyer, M.T., Schnoebelen, D.J., Kalkhoff, S.J., 2004, Pesticide degradates: Monitoring and occurrence: Proceedings of International symposium on pesticides, their degradates, and adjuvants (organized by Cranfield University), Prague, Czech Republic, June 4, 2004.
2004	Boxall, A.B.A., Sinclair, C.J., Fenner, K., Kolpin, D.W., and Maund, S.J., 2004, When synthetic chemicals degrade in the environment: Environ. Sci. Technol., v. 38, n. 19, p. 369A-375A.
2004	Lee, K.E., Barber, L.B., Cahill, J.D., Furlong, E.T., Kolpin, D.W., Meyer, M.T., and Zaugg, S.D., 2004, Presence and distribution of organic wastewater compounds in wastewater, surface, ground, and drinking waters, Minnesota, 2000-02: U.S. Geological Survey Scientific-Investigations Report 2004-5138, 47 p.
2004	Eash, D.A., 2004, Flood of June 4-5, 2002, in the Maquoketa River Basin, east-central Iowa: USGS OFR 2004-1250, 29 p.
2004	Littin, G.R., 2004 Quality of Ground Water Used for Selected Municipal Water Supplies in Iowa, 1997-2002 Water Years: USGS OFR 2004-1048, 36 p.
2004	Eash, D.A., 2004, Flood of June 4, 2002, in the Indian Creek Basin, Linn County, Iowa: USGS OFR 2004-1074, 31 p.
2004	Christiansen, D.E., 2004, Riverbed Elevations and Water Quality of the Missouri River at Sioux City, Iowa, 2002-03 USGS SIR 2004-5079.
2004	Nalley, G.M., Gorman, J.G., Goodrich, R.D., and Miller, V.E., 2004, Water resources data Iowa, water year 2003, volume 1: surface water and precipitation: USGS WDR IA-03-1.
2004	Nalley, G.M., Linhart, S.M., Littin, G.R., and Miller, V.E., 2004, Water resources data Iowa, water year 2003, volume 2: ground water and quality of precipitation: USGS WDR IA-03-2.
2004	Turco, M.S., and Buchmiller, R.C., 2004, Simulation of ground-water flow in the Cedar River alluvial aquifer flow system, Cedar Rapids, Iowa: USGS SIR 2004-5130, 39p.
2003	Battaglin, W.A., Thurman, E.M., Kolpin, D.W., Scribner, E.A., Sandstrom, M.W., and Kuivila, K.M., 2003, Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbicide compounds, and antibiotics in midwestern United States streams, 2002: USGS OFR 03-69, 18 p.
2003	Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2003, Response to comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance": Environ. Sci. Technol., v. 37, n. 5, p. 1054.
2003	Boxall, A.B.A., Kolpin, D.W., Halling-Sorensen, B., and Tolls, J., 2003. Are veterinary medicines causing environmental risks?: Environ. Sci. Technol., v. 37, n. 15, p. 286A-294A.
2003	Focazio, M.J., Kolpin, D.W., Buxton, Herb, 2003, Pharmaceuticals, hormones, personal-care products, and other organic wastewater contaminants in water resources -- recent research activities of the U.S. Geological Survey's Toxic Substances Hydrology Program: GeoHealth News, vol. 2, no. 1, July - September, 2003, p. 3 - 7.
2003	Worrall, F., and Kolpin, D.W. 2003. Direct assessment of groundwater vulnerability from single observations of multiple compounds. Water Resour. Res. v. 39, n. 12, p. 1345-1352.
2003	Eash, D.A., 2003, Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges: USGS WRIR 03-4120, 215 p.
2003	Schnoebelen, D.J., McVay, J.C., Barnes, K.K., and Becher, K.D., 2003, Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02: USGS WRIR 03-4085, 38 p.
2003	Kalkhoff, S.J., Lee, K.E., Porter, S.D., Terrio, P.J., and Thurman, E.M., 2003, Herbicides and herbicide degradation products in upper midwest agricultural streams during August base-flow conditions: Journal of Environmental Quality, v. 32, p. 1025-1035.
2003	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2003, Water resources data Iowa, water year 2002, volume 1: surface water--Mississippi River Basin: USGS WDR IA-02-1.
2003	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2003, Water resources data Iowa, water year 2002, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-01-2.
2003	Schaap, B.D., Savoca, M.E., and Turco, M.J., 2003, Simulation of ground-water flow in the Cedar River alluvium, northwest Black Hawk County and southwest Bremer County, Iowa: USGS WRIR 03-4080, 42 p.
2003	Schnoebelen, D.J., Kalkhoff, S.J., Becher, K.D., and Thurman, E.M., 2003, Water-quality assessment of the Eastern Iowa Basins: Selected pesticides and pesticide degradates in streams, 1996-98: USGS WRIR 03-4075, 62 p.
2002	Buxton, H.T., and Kolpin, D.W., 2002, Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams: USGS FS-027-02, 2 p.
2002	Barnes, K.K., Kolpin, D.W., Meyer, M.T., Thurman, E.M., Furlong, E.T., Zaugg, S.D., and Barber, L.B., 2002, Water-quality data for pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: USGS OFR 02-94.
2002	Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002, Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance: Environ. Sci. Technol., v. 36, n. 2, p. 1202-1211.
2002	Kolpin, D.W., Barbash, J.E., Gilliom, R.J., 2002, Atrazine and metolachlor occurrence in shallow ground water of the United States, 1993 to 1995: Relations to explanatory factors: J. Am. Wat. Res. Assoc., v. 38, n. 1, p. 301-311.
2002	Squillace, P.J., Scott, J.C., Moran, M.J., Nolan, B.T., and Kolpin, D.W., 2002, VOCs, pesticides, nitrate, and their mixtures in groundwater used for drinking water in the United States: Environ. Sci. Technol., v. 36, n. 9, p. 1923-1930.
2002	Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002, Response to comment on “Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance”: Environ. Sci. Technol., v. 36, n. 18, p. 4004.
2002	Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002, Response to comment on “Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999-2000: A national reconnaissance”: Environ. Sci. Technol., v. 36, n. 18, p. 4007-4008.
2002	Campagnolo, E.R., Johnson, K.R., Karpati, A., Rubin, C.S., Kolpin, D.W., Meyer, M.T., Estaban, J.E., Currier, R.W., Smith, K., Thu, K.M., McGeehin, M., 2002, Antimicrobial residues in animal waste and water resources proximal to large-scale swine and poultry feeding operations: Sci. Tot. Environ., v. 299, p. 89-95.
2002	Cordy, G., Duran, N., Bouwer, H., Rice, R., Adamsen, F., Askins, J., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., Meyer, M.T., Barber, L.B, 2002, Do pharmaceuticals, pathogens, and other organic wastewater contaminants persist when wastewater is used for recharge? in Tembly, Jeff, compiler, Symposium 2002--Water Transfers: Past, Present, and Future: Proceedings of the fifteenth annual symposium of the Arizona Hydrological Society, Flagstaff, AZ, Sept. 18- 21, 2002, p. 105-109.
2002	Worrall, F., Besien, T., and Kolpin, D.W., 2002, Groundwater vulnerability: Interactions of chemical and site properties: Sci. Tot. Environ., v. 299, p. 131-143.
2002	Caldwell, J.P., and Sadorf, E.M., 2002, Ground water near Pella and in selected parts of Jasper, Mahaska, and Marion Counties, Iowa: USGS WRIR 02-4118, 24 p.
2002	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2002, Water resources data Iowa, water year 2001, volume 1: surface water--Mississippi River Basin: USGS WDR IA-01-1.
2002	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2002, Water resources data Iowa, water year 2001, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-01-2.
2002	Savoca, M.E., Lucey, K.J., and Lanning, B.D., 2002, Simulation of ground-water flow and delineation of areas contributing recharge to municipal water-supply wells, Muscatine, Iowa: USGS WRIR 02-4004, 26 p.
2001	Ballew, J.L., and Eash, D.A., 2001, Floods of July 19-25, 1999, in the Wapsipinicon and Cedar River Basins, northeast Iowa: USGS OFR 01-13, 45p.
2001	Barbash, J.E., Thelin, G.P., Kolpin, D.W., and Gilliom, R.J., 2001, Major herbicides in ground water: Results from the National Water-Quality Assessment: Journal of Environmental Quality, v. 30, p. 831-845.
2001	Barnes, K.K., 2001, Water quality assessment of the Eastern Iowa Basins: Basic water chemistry of rivers and streams, 1996-98, in Abstracts from the Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference: Iowa State University, Ames, Iowa March 5-7, 2001, p. 111.
2001	Becher, K.D., 2001, Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers, in Abstracts from the Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference: Iowa State University, Ames, Iowa March 5-7, 2001, pp. 83-84.
2001	Becher, K.D., Kalkhoff, S.J., Schnoebelen, D.J., Barnes, K.K., and Miller, V.E., 2001, Water-quality assessment of the Eastern Iowa Basins--nitrogen, phosphorus, suspended sediment, and organic carbon in surface water, 1996-98: USGS WRIR 01-4175, 56 p.
2001	Boyd, R.A., 2001, Simulated ground-water flow and water quality of the Mississippi River alluvium near Burlington, Iowa, 1999: USGS WRIR 00-4274, 46 p.
2001	Brigham, A.R., and Sadorf, E.M., 2001, Benthic invertebrate assemblages and their relation to physical and chemical charactertistics of streams in the Eastern Iowa Basins, 1996-98: USGS WRIR 00-4256, 44 p.
2001	Buchmiller, R.C., 2001, Ground water near Newton, Jasper County, Iowa: USGS WRIR 01-4148, 28 p.
2001	Burkart, M., Kolpin, D.W., Jaquis, R., and Cole, K. 2001, Soil characteristics and agrichemicals in groundwater of the Midwestern United States: Water Science & Technology, v. 43, n. 5, p. 251-260.
2001	Eash, D.A., 2001, Techniques for estimating flood-frequency discharges for streams in Iowa: USGS WRIR 00-4233, 88 p.
2001	Harvey, C.A., and Eash, D.A., 2001, Basinsoft, a computer program to quantify drainage basin characteristics, in Lyon, J.C., GIS for watershed and water resources management: Chelsea, MI, Sleeping Bear Press Book Co., p. 39-52.
2001	Johnson, K., and others, 2001, Sampling protocol to assess and monitor off-farm transport of waste-associated chemical and microbial constituents present of swine feeding operations: Centers for Disease Control and Prevention/National Center for Environmental Health/Division of Environmental Hazards and Health Effects/Health Studies Branch, Atlanta, GA, 50 p.
2001	Kalkhoff, S.J., Barnes, K.K., Becher, K.D., Savoca, M.E., Schnoebelen, D.J., Sadorf, E.M., Porter, S.D., and Sullivan, D.J., 2001, Water quality in the Eastern Iowa Basins, Iowa and Minnesota, 1996-98: U.S. Geological Survey Circular 1210, 30 p.
2001	Kalkhoff, S.J., Barnes, K.K., Becher, K.D., Savoca, M.E., Schnoebelen, D.J., Sadorf, E.M., Porter, S.D., Sullivan, D.J., and Creswell, John, 2001, Water quality in the eastern Iowa basins: Iowa State University Extension Integrated Crop Management Newsletter IC-486, vol. 23, pp. 185-186.
2001	Kalkhoff, S.J., Schnoebelen, D.J., and Thurman,E.M., 2001, The occurrence of chloroacetanilide and triazine herbicide degradates in streams in eastern Iowa, in Abstracts from the Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference: Iowa State University, Ames, Iowa March 5-7, 2001, pp. 25-26.
2001	Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 2001, Occurrence of cyanazine compounds in groundwater: Degradates more prevalent than the parent compound: Environmental Science & Technology, v. 35, n. 6, p. 1217-1222.
2001	Linhart, S.M., 2001, Ammonia in ground water from the Mississippi River alluvium, Fort Madison, Iowa: USGS WRIR 00-4062, 21 p.
2001	Linhart, S.M., and Schaap, B.D., 2001, Effects of remedial grouting on the ground-water flow system at Red Rock Dam near Pella, Iowa: USGS WRIR 00-4231, 35 p.
2001	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2001, Water resources data Iowa, water year 2000, volume 1: surface water--Mississippi River Basin: USGS WDR IA-00-1.
2001	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2001, Water resources data Iowa, water year 2000, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-00-2.
2001	Patterson, G., Kolpin, D.W., Kalkhoff, S.J., Lee, K., Schnoebelen, D., Barnes, K.K., and Coupe, R., 2001, It's not just how high; it's how clean: Sampling the spring 2001 flood in the Upper Mississippi River Basin: EPA Watershed Events, EPA 840-B01-001, Summer 2001, 3-4.
2001	Porter, S.D., Harris, M.A., and Kalkhoff, S.J., 2001, Influence of natural factors on the quality of midwestern streams and rivers: USGS WRIR 00-4288. 13 p.
2001	Savoca, M.E., Sadorf, E.M., Linhart, S.M., and Barnes, K.K., 2001, Quality of water in alluvial aquifers in eastern Iowa, in Abstracts from the Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference: Iowa State University, Ames, Iowa March 5-7, 2001, pp.87-88.
2001	Schnoebelen, D.J., Kalkhoff, S.J., and Becher, K.D., 2001, Occurrence and distribution of pesticides in streams of the Eastern Iowa Basins, 1996-98, in Abstracts from the Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference: Iowa State University, Ames, Iowa March 5-7, 2001, pp. 85-86.
2000	Akers, K.K.B, Montgomery, D.L., Christiansen, D.E., Savoca, M.E., Schnoebelen, D.J., Becher, K.D., and Sadorf, E.M., 2000, Water-quality assessment of the Eastern Iowa Basins: Hydrologic and biologic data, October 1996 through September 1998: USGS OFR 00-67, 359 p.
2000	Ballew, J.L., and Fischer, E.E., 2000, Floods of May 17-20, 1999, in the Volga and Wapsipinicon River Basins, Northeast Iowa: USGS OFR 00-237, 36 p.
2000	Becher, K.D., Schnoebelen, D.J., and Akers, K.K.B., 2000, Nutrients discharged to the Mississippi River from eastern Iowa watersheds, 1996-1997: Journal of the American Water Resources Association, vol. 36, no. 1, pp. 161-173.
2000	Boyd, R.A., 2000, Herbicides and herbicide degradates in shallow groundwater and the Cedar River near a municipal well field, Cedar Rapids, Iowa: the Science of the Total Environment, vol. 248, pp. 241-253.
2000	Buchmiller, R.C., Eash, D.A., and Harvey, C.A., 2000, Volumes of recent floods and potential for storage in upland watershed areas of Iowa: USGS FS-097-00, 1 sheet.
2000	Kalkhoff, S.J., 2000, Major Ground-Water Findings from the National Water-Quality Assessment Program (NAWQA) in Iowa, in Abstracts from the Iowa Groundwater Association Fall 2000 Meeting in Iowa Groundwater Quarterly, vol. 11, no. 4. p.31-32.
2000	Kalkhoff, S.J., 2000, Summary of the major water-quality findings from the Eastern Iowa Basins study unit of the National Water-Quality Assessment Program: Iowa Groundwater Quarterly, vol. 11, no. 3, Fall 2000, pp. 20-21
2000	Kolpin, D.W. (guest editor), 2000, Special Issue, Fate and Transport of Agricultural Chemicals in the Mississippi River Basin: Science of the Total Environment, v. 248, n. 2-3, 276 p.
2000	Kolpin, D.W., 2000, Foreword to special issue: Importance of the Mississippi River basin for investigating agricultural-chemical contamination of the hydrologic cycle: Science of the Total Environment, v. 248, n. 2-3, p. 71-72.
2000	Kolpin, D.W., Barbash, J.E., and Gilliom, R.J., 2000, Pesticides in ground water of the United States, 1992-96: Ground Water, v. 38, n. 6, p. 858-863.
2000	Kolpin, D.W., Fischer, E.E., and Schnoebelen, D.J., 2000, Water-quantity and water-quality aspects of a 500-year flood -- Nishnabotna River, southwest Iowa, June 1998: USGS WRIR 00-4025.
2000	Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 2000, Finding minimal concentrations of herbicides in ground water? Try looking for the degradates: Science of the Total Environment, v. 248, n. 2-3, p. 115-122.
2000	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2000, Water resources data Iowa, water year 1999, volume 1: surface water--Mississippi River Basin: USGS WDR IA-99-1.
2000	Nalley, G.M., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 2000, Water resources data Iowa, water year 1999, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-99-2.
2000	Sadorf, E.M. and Linhart, S.M., 2000, Ground-water quality in alluvial aquifers in the Eastern Iowa Basins, Iowa and Minnesota: USGS WRIR 00-4106, 46 p.
2000	Savoca, M.E., Sadorf, E.M., Linhart, S.M., and Akers, K.K.B., 2000, Effects of land use and hydrogeology on the water quality of alluvial aquifers in Eastern Iowa and Southern Minnesota, 1997, USGS WRIR 99-4246, 38 p.
2000	Sullivan, D.J., 2000, Fish Communities and their relation to environmental factors in the Eastern Iowa Basins in Iowa and Minnesota, 1996: USGS WRIR 00-4194, 20 p.
2000	Wilde, F.D., Britton, L.J., Miller, C.V., and Kolpin, D.W., (compilers), 2000, Effects of animal feeding operations on water resources and the environment -- Proceedings of the technical meeting, Fort Collins, Colorado, August 30 - September 1, 1999: USGS OFR 00-204.
1999	Akers, K.K.B, Schnoebelen, D.J., Savoca, M.E., Roberts, L.R., and Becher, K.D., 1999, Water quality assessment of the Eastern Iowa Basins: Hydrologic and biologic data, September 1995 through September 1996: USGS OFR 99-66, 154 p.
1999	Barbash, J.E., Thelin, G.P., Kolpin, D.W., and Gilliom, R.J., 1999, Distribution of major herbicides in ground water of the United States: USGS WRIR 98-4245, 57 p.
1999	Becher, K.D. and Akers, K.K.B., 1999, Comparison of water quality in four small watersheds containing animal feeding operations in Iowa, 1996-98 in Workshop Abstracts of conference Animal Feeding Operations: Effects on Hydrologic Resources and the Environment, Fort Collins, CO August 30-September 1, 1999. [Conference proceedings]
1999	Boyd, R.A., 1999, Groundwater geochemistry in the Seminole Well Field, Cedar Rapids, Iowa: Journal of the American Water Resources Association, vol. 35, no. 5, pp. 1257-1268.
1999	Boyd, R.A., 1999, Herbicides and herbicide degradates in shallow ground water and the Cedar River near a municipal well field, Cedar Rapids, Iowa: Proceedings of the U.S. Geological Survey Toxic Substances Hydrology Program 1999 technical meeting.
1999	Boyd, R.A., Kuzniar, R.L., and Schulmeyer, P.M., 1999, Selected hydrologic data from the Cedar Rapids area, Linn County, Iowa, April 1996 through March 1999: USGS OFR 99-461, 241 p.
1999	Burkart, M.R., Kolpin, D.W., Jaquis, R.J., and Cole, K.J., 1999, Agrichemicals in groundwater of the midwestern United States: Relations to soil characteristics: Journal of Environmental Quality, v. 28, n. 6, p. 1908-1915.
1999	Burkart, M.R., Kolpin, D.W., and James, D.E., 1999, Assessing groundwater vulnerability to agrichemical contamination in the Midwest U.S.: Water Science & Technology, v. 39, n. 3, p. 103-112.
1999	Burkart, M.R., Simpkins, W.W., Helmke, M.F., and Squillace, P.J., 1999, Infiltration of herbicides to an alluvial aquifer through tributary stream leakage: Journal of Environmental Quality, vol. 28, pp. 69-74.
1999	Fischer, E.E., 1999, Flood of June 15-17, 1998, Nishnabotna and East Nishnabotna Rivers, southwest Iowa: USGS OFR 99-70.
1999	Gilliom, R.J., Barbash, J.E., Kolpin, D.W., and Larson, S.J., 1999, Pesticides in streams and ground water of the United States: Environmental Science & Technology, v. 33, n. 7, p. 164A-169A.
1999	Kalkhoff, S.J. and Thurman, E.M., 1999. Occurrence and distribution of chloroacetanilide and triazine pesiticide metabolites in streams in eastern Iowa: Abstracts from the Seventh Symposium on the Chemistry and Fate of Modern Pesticides, Lawrence Kansas, Sept 14-16, 1999.
1999	Kalkhoff, S.J., Savoca, M.E., Sadorf, E.M., Kolpin, D.W., and Thurman, E.M., 1999, Occurrence of acetochlor and acetochlor metabolites in alluvial aquifers in Iowa, in Abstracts of papers Part 1, 218th ACS National Meeting: American Chemical Society, New Orleans, LA. August 22-26, 1999.
1999	Kolpin, D.W., Burkart, M.R., and Goolsby, D.A., 1999, Nitrate in groundwater of the midwestern United States: A regional investigation on relations to land use and soil properties. IAHS Publication No. 257, p. 111-116.
1999	Kolpin, D.W., Thurman, E.M., and Linhart, S.M., 1999, Finding minimal concentrations of herbicides in ground water? Try looking for the degradates, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999--Volume 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems: USGS WRIR 99-4018B, p. 247-254.
1999	Lucey, K.J., Schaap, B.D., and Fischer, E.E., 1999, Effects on ground-water levels in the Missouri River alluvial aquifer caused by changes in Missouri River stage, Fremont and Monona Counties, Iowa: USGS WRIR 98-4235.
1999	May, J.E., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 1999, Water resources data Iowa, water year 1998, volume 1: surface water--Mississippi River Basin: USGS WDR IA-98-1.
1999	May, J.E., Gorman, J.G., Goodrich, R.D., Miller, V.E., Turco, M.J., and Linhart, S.M., 1999, Water resources data Iowa, water year 1998, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-98-2.
1999	Savoca, M.E., Sadorf, E.M., and Akers, K.K., 1999, Ground-water quality in the eastern part of the Silurian-Devonian and Upper Carbonate aquifers in the Eastern Iowa Basins, Iowa and Minnesota, 1996: USGS WRIR 98-4224.
1999	Schaap, B.D., 1999, Concentrations and possible sources of nitrate in water from the Silurian-Devonian aquifer, Cedar Falls, Iowa: USGS WRIR 99-4106, 19 p.
1999	Schnoebelen, D.J. and Kalkhoff, S.J., 1999, Herbicide loads in streams of eastern Iowa: The importance of herbicide metabolites in fate and transport: Geological Society of American Abstracts with Programs, v. 31, no. 7.
1999	Schnoebelen, D.J., Becher, K.D., Bobier, M.W., and Wilton, T., 1999, Selected nutrients and pesticides in streams of the Eastern Iowa Basins, 1970-95: USGS WRIR 99-4028, 65 p.
1999	Schnoebelen, D.J., and Becher, K.D., 1999, Nutrients, pesticides, and pesticide metabolites discharged to the Mississippi River from eastern Iowa watersheds, 1996-98; Program abstracts of the Mississippi Water Resources Conference, April 7-8, 1999, Raymond, Miss.
1999	Sorenson, S.K., Porter, S.D., Akers, K.K.B., Harris, M.A., Kalkhoff, S.J., Lee, K.E., Roberts, L.R., and Terrio, P.J., 1999, Water quality and habitat conditions in upper midwest streams relative to riparian vegetation and soil characteristics, August 1997: Study design, methods, and data: USGS OFR 99-202, 53 p.
1999	Turco, M.J., 1999, Regional water-level changes for the Cambrian-Ordovician Aquifer in Iowa, 1975 to 1997: USGS WRIR 99-4134, 11 p.
1999	U.S. Geological Survey, 1999, The quality of our Nation's waters -- Nutrients and pesticides: U.S. Geological Survey Circular 1225, 82 p.
1998	Fischer, E.E., and Eash, D.A., 1998, Statistical summaries of selected Iowa streamflow data through September 1996: USGS OFR 98-170.
1998	Kalkhoff, S.J., Kolpin, D.W., Thurman, E.M., 1998, Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa's ground and surface waters: Environmental Science & Technology, v. 32, n. 11, p. 1738-1740.
1998	Kolpin, D.W., Barbash, J.E., and Gilliom, R.J., 1998, Occurrence of pesticides in shallow ground water of the United States: Initial results from the National Water-Quality Assessment Program: Environmental Science & Technology, v. 32, n. 3, p. 558-566.
1998	Kolpin, D.W., Stamer, J.K., Goolsby, D.W., and Thurman, E.M., 1998, Herbicides in ground water of the Midwest: A regional study of shallow aquifers, 1991-94: USGS FS-076-98, 4 p.
1998	Kolpin, D.W., Thurman, E.M., Linhart, S.M., 1998, The environmental occurrence of herbicides: The importance of degradates of ground water: Archives of Environmental Contamination and Toxicology, v. 35, p. 385-390.
1998	May, J.E., Gorman, J.G., Goodrich, R.D., and Miller, V.E., 1998, Water resources data Iowa, water year 1997, volume 1: surface water--Mississippi River Basin: USGS WDR IA-97-1.
1998	May, J.E., Gorman, J.G., Goodrich, R.D., and Miller, V.E., 1998, Water resources data Iowa, water year 1997, volume 2: surface water--Missouri River Basin, and ground water: USGS WDR IA-97-2.
1998	Perry, C.A., and Combs, L.J., eds., 1998, Summary of floods in the United States, January 1992 through September 1993: USGS WSP 2499.
1998	Schaap, B.D., and Linhart, S.M., 1998, Quality of ground water used for selected municipal water supplies in Iowa, 1982-96 water years: USGS OFR 98-3.
1998	Schulmeyer, P.M., and Schnoebelen, D.J., 1998, Hydrogeology and water quality in the Cedar Rapids area, Iowa, 1992-96: USGS WRIR 97-4261.
1998	Thurman, E.M., Kolpin, D.W., Goolsby, D.A., and Meyer, M.T., 1998, Source and transport of desethylatrazine and desisopropylatrazine to groundwater of the midwestern United States: Triazine Herbicides Risk Assessment, ACS Symposium Series 683, p. 189-207.
1998	Thurman, E.M., Kolpin, D.W., Kalkhoff, S.J., Phillips, P.J., 1998, Occurrence of acetanilide herbicide metabolites in tile runoff and ground [abs]: 43rd Annual Midwest Groundwater Conference, October 12-14, Lawrence, Kansas, Program Abstracts, p. 17.
1997	Eash, D.A., Koppensteiner, B.A., 1997. Floods of September 15-16, 1992, in the Thompson, Weldon, and Chariton River Basins, South Central Iowa: USGS OFR 97-122.
1997	Eash, D.A., Koppensteiner, B.A., 1997. Flood of July 9-11, 1993, in the Raccoon River Basin, West Central Iowa: USGS OFR 97-557.
1997	Kalkhoff, S.J., Van Metre, P.C., 1997. Organochlorine Compounds in a Sediment Core from Coralville Reservoir, Iowa: USGS FS-129-97.
1997	Kolpin, D.W., 1997, Agricultural chemicals in groundwater of the midwestern United States: Relations to land use: Journal of Environmental Quality, v. 26, n. 4, p. 1025-1037.
1997	Kolpin, D.W., Hallberg, G.R., Sneck-Fahrer, D.A., and Libra, R.D., 1997, Agricultural chemicals in Iowa's ground water, 1982-1995: What are the trends?: USGS FS 116-97.
1997	Kolpin, D.W., Kalkhoff, S.J., Goolsby, D.A., Sneck-Fahrer, D.A., and Thurman, E.M., 1997, Occurrence of selected herbicides and herbicide degradation products in Iowa's ground water, 1995: Ground Water, v. 35, n. 4, p. 679-688.
1997	Kolpin, D.W., Sneck-Fahrer, D.A., Hallberg, G.R., and Libra, R.D., 1997, Temporal trends of selected agricultural chemicals in Iowa's ground water, 1982-1995: Are things getting better?: Journal of Environmental Quality, v. 26, n. 4, p. 1007-1017.
1997	Kolpin, D.W., Squillace, P.J., Barbash, J.E., and Zogorski, J.S., 1997, Pesticides and volatile organic compounds in shallow urban groundwater, in J. Chilton (ed.), Groundwater in the Urban Environment: A.T. Balkema Publishers, Netherlands, p. 469-474.
1997	Liu, S, Lu, Jy-Chy, Kolpin, D.W., and Meeker, W.Q., 1997, Analysis of environmental data with censored observations: Environmental Science & Technology, v. 31, n. 12, p. 3358-3362.
1997	Lucey, Keith J., 1997, Evaluation of Drawdown and Sources of Water in the Mississippi River Alluvium Caused by Hypothetical Pumping, Muscatine, Iowa: USGS WRIR 97-4162.
1997	May, J.E., Gorman, J.G., Goodrich, R.D., Bobier, M.W., and Miller, V.E., 1997, Water resources data Iowa, water year 1996: USGS WDR IA-96-1.
1997	Roberts, L.R., 1997, Occurrence of selected organochlorine compounds in fish tissue from Eastern Iowa Streams, 1995: USGS FS-027-97, 4 p.
1997	Savoca, M.E., Tobias, J.L., Sadorf, E.M., and Birkenholtz, T.L., 1997, Herbicides and nitrate in the Iowa River alluvial aquifer prior to changing land use, Iowa County, Iowa, 1996: USGS FS 085-97.
1996	Buchmiller, R. C., 1996, Ground-water levels and flow at selected study sites in the Walnut Creek Management System Evaluation Area, Boone and Story counties, Iowa, 1991-93: USGS WRIR 95-4109.
1996	Eash, D.A., 1996, Flood of May 19, 1990, along Perry Creek in Plymouth and Woodbury Counties, Iowa: USGS OFR 96-476.
1996	Eash, D.A., 1996, Effects of the 1993 Flood on the determination of flood magnitude and frequency in Iowa: U.S. Geological Survey Circular 1120-K.
1996	Eash, D.A., and Harvey, C.A., 1996, Description of Basinsoft, a computer program to quantify drainage-basin characteristics, in Shank, K.M., ed., U.S. Geological Survey National Computer Technology Meeting--Programs and Abstracts, Rancho Mirage, California, May 19-23, 1996: USGS OFR 96-204.
1996	Eash, D.A. and Koppensteiner, B.A., 1996, Floods of July 12, 1972, March 19, 1979, and June 15, 1991, in the Turkey River Basin, notheastern Iowa: USGS OFR 96-560, 55 p.
1996	Einhellig, R.F., and Eash, D.A., 1996, Floods of June 17, 1990, and July 9, 1993, along Squaw Creek and the South Skunk River in Ames, Iowa, and vicinity: USGS OFR 96-249, 34 p.
1996	Fischer, E.E., 1996, Survey of users of the USGS stream-gaging network in Iowa, 1996: USGS OFR 96-185, 35 p.
1996	Fischer, E.E., 1996, Potential-scour assessments at 130 bridges in Iowa, in Chenchayya, B.T., ed., North American Water and Environment Congress & Destructive Water: New York, New York, American Society of Civil Engineers, available on CD-ROM only.
1996	Harvey, C.A., and Eash, D.A., 1996, Description, instructions, and verification for Basinsoft, a computer program to quantify drainage- basin characteristics: USGS WRIR 95-4287.
1996	Harvey, C.A., and Eash, D.A., 1996, Description of Basinsoft, a computer program to quantify drainage-basin charactersitics, in 1996 User Conference Proceedings: Environmental Systems Research Institute, Inc., May 20-24, 1996, (proceedings were not published, but are available on the Internet at http://www.esri.com/resources/userconf/proc96/WELCOME.HTM).
1996	Harvey, C.A., and Kolpin, D.W., and Battaglin, W.A., 1996, Use of geographic information systems and scanning technology to create high resolution historical land use data sets: USGS WRIR 96-4100, 41 p.
1996	Kalkhoff, S.J., and Schaap, B.D., 1996, Agricultural chemicals in ground and surface water in a small watershed in Clayton County, Iowa, 1988-91: USGS WRIR 95-4158.
1996	Kolpin, D.W., Nations, B.K., Goolsby, D.A., and Thurman, E.M., 1996, Acetochlor in the hydrologic system in the midwestern United States: Journal of Environmental Quality, v. 30, no. 5.
1996	Kolpin, D.W., Thurman, E.M., and Goolsby, D.A., 1996, Occurrence of selected pesticides and their metabolites in near-surface aquifers of the Midwestern United States: Environmental Science Technology, v. 30, no. 1.
1996	Kolpin, D.W., Zichelle, K.E., and Thurman, E.M., 1996, Water- quality data for nutrients, pesticides, and volatile organic compounds in near-surface aquifers of the midcontinental United States, 1992- 1994: USGS OFR 96-435, p. 845-853.
1996	Liu, S., Yen, S.T., and Kolpin, D.W., 1996, Pesticides in ground water: do atrazine metabolites matter?: Journal of the American Water Resources Association, v. 32, no. 4.
1996	May, J.E., Gorman, J.G., Goodrich, R.D., Bobier, M.W., and Miller, V.E., 1996, Water resources data Iowa, water year 1995: USGS WDR IA-95-1.
1996	Schaap, B.D., 1996, Delineation of flooding within the upper Mississippi River Basin, 1993--Flood of June 19-July 31, 1993, in Davenport, Iowa, and vicinity: U.S. Geological Survey Hydrologic Investigations Atlas HA 735-C.
1996	Schaap, B.D., 1996, Delineation of flooding within the upper Mississippi River Basin, 1993--Flood of June 18 through August 4, 1993, in Des Moines and vicinity, Iowa: U.S. Geological Survey Hydrologic Investigations Atlas HA 735-D.
1996	Schnoebelen, D.J., and Schulmeyer, P.M., 1996, Selected hydrogeologic data from the Cedar Rapids area, Benton and Linn counties, Iowa, October 1992 through March 1996: USGS OFR 96-471.
1996	Soenksen, P.J., 1996, Transport of agricultural chemicals in surface flow, tileflow, and streamflow of Walnut Creek watershed near Ames, Iowa, April 1991-September 1993: USGS WRIR 96-4017.
1996	Squillace, P.J., 1996, Observed and simulated movement of bank-storage water: Ground Water, vol. 34, no. 1, pp. 121-134.
1996	Squillace, P.J., Caldwell, J.P., Schulmeyer, P.M., and Harvey, C.A., 1996, Movement of agricultural chemicals between surface water and ground water, lower Cedar River Basin, Iowa: USGS WSP 2448, 59 p.
1996	Yen, S.T., Liu, S., and Kolpin, D.W., 1996, Analysis of nitrate in near-surface aquifers in the midcontinental United States: an application of the inverse hyperbolic sine To bit model: Water Resources Research, v. 32, no. 10.
1995	Bobier, M.W., 1995, Reservoir water quality at Corydon, Iowa: Iowa Fact Sheet 95-119.
1995	Buchmiller, R.C., 1995, U.S. Geological Survey programs in Iowa: USGS FS 015-95.
1995	Buchmiller, R.C., 1995, Hydrogeologic and agricultural-chemical data for the South Skunk River alluvial aquifer at a site in Story County, Iowa, 1992-93: USGS WRIR 94-4244.
1995	Fischer, E.E., 1995, Contraction scour at a bridge over Wolf Creek, Iowa, in Conference on Water Resources Engineering 1995, San Antonio, Texas, Proceedings: New York, New York, American Society of Civil Engineers.
1995	Fischer, E.E., 1995, Potential-scour assessments and estimates of maximum scour at selected bridges in Iowa: USGS WRIR 95-4051, 75 p.
1995	Goolsby, D.A., Thurman, E.M., Kolpin, D.W., and Battaglin, W.A., 1995, Occurrence of herbicides and metabolites in surface water, ground water, and rainwater in the midwestern United States, in Proceedings of 1995 Annual Conference, June 18-22, 1995: Anaheim, California, American Water Works Association.
1995	Goolsby, D.A., Thurman, E.M., Kolpin, D.W., and Meyer, M.T., 1995, Herbicides and metabolites in surface and ground water in the midwestern United States, in Proceedings of 209th Chemical Society Meeting, April 2-7, 1995: Anaheim, CA, Chemical Society, v. 35, no. 1.
1995	Kalkhoff, S.J., 1995, Relation between stream-water quality and geohydrology during base-flow conditions, Roberts Creek, Watershed, Clayton County, Iowa: Water Resources Bulletin, v. 31, no. 4.
1995	Kolpin, D.W., 1995, Agricultural chemicals in ground water of the midwest, in Proceedings of 1995 Water and the Future of Kansas Conference, February 28-March 1, 1995: Manhattan, Kansas, Kansas State University.
1995	Kolpin, D.W., and Goolsby, D.A., 1995, A regional monitoring network to investigate the occurrence and distribution of agricultural chemicals in near-surface aquifers of the midcontinental USA, in Kovar, K., and Krasny, J., eds., Proceedings of the Confer ence on Groundwater Quality--Remediation and Protection, Prague, Czech Republic, May 15-18, 1995: The Netherlands, International Association of Hydrological Sciences Publication No. 225.
1995	Kolpin, D.W., Goolsby, D.A., and Thurman, E.M., 1995, Pesticides in near-surface aquifers: An assessment of highly sensitive analytical techniques and tritium: Journal of Environmental Quality, v. 24, no. 6.
1995	Kolpin, D.W., and Thurman, E.M., 1995, Postflood occurrence of selected agricultural chemicals and volatile organic compounds in near-surface unconsolidated aquifiers in the upper Mississippi River basin, 1993: U.S. Geological Survey Circular 1120-G.
1995	Lucey, K.J., Kuzniar, R.L., and Caldwell, J.P., 1995, Hydrogeology and water quality of the Mississippi River alluvium near Muscatine, Iowa, June 1992 through June 1994: USGS WRIR 95-4049, 74 p.
1995	May, J.E., Sneck-Fahrer, D., Gorman, J.G., Goodrich, R.D., Nations, B.K., and Miller, V.E., 1995, Water resources data Iowa, water year 1994: USGS WDR IA-94-1.
1995	Middlemis-Brown, R.G., 1995, United States Geological Survey activities in Iowa: USGS OFR 95-392.
1995	Mueller, D.S., Landers, M.N., and Fischer, E.E., 1995, Scour measurements at bridge sites during 1993 upper Mississippi River basin flood, in Transportation Research Record No. 1783: Transportation Research Board, Washington, D.C.
1995	Schaap, B.D., 1995, Urban stormwater runoff study at Davenport, Iowa: Iowa Fact Sheet 177-95.
1995	Schaap, B.D., and Einhellig, R.F., 1995, Water quality of stormwater runoff from Davenport, Iowa, 1992 and 1994: USGS OFR 95-759.
1995	Schaap, B.D., and Harvey, C.A., 1995, Delineation of flooding within the upper Mississippi River Basin, 1993--Flood of June 29-September 18, 1993, in Iowa City and vicinity, Iowa: U.S. Geological Survey Hydrologic Investigations Atlas HA 735-B.
1995	Schulmeyer, P.M., 1995, Effect of the Cedar River on the quality of the ground-water supply for Cedar Rapids, Iowa: USGS WRIR 94-4211.
1995	Schulmeyer, P.M., Barnes, K.K., and Squillace, P.J., 1995, Hydrologic data from the Lower Cedar River Basin, Iowa, 1989-91: USGS OFR 94-711.
1995	Southard, R., 1995, Flood volumes in the upper Mississippi River basin, April 1 through September 30, 1993: U.S. Geological Survey Circular 1120-H.
1995	Thomas, W.O., Jr., and Eash, D.A., 1995, Magnitude and frequency of peak discharges for Mississippi River Basin flood of 1993, in 1993 Midwest floods and water quality best management practices: Transportation Research Board, National Research Council, Tr ansportation Research Record, no. 1483, Highway and Facility Design.
1995	Wang, W., Liszewski, M., Buchmiller, R., and Cherryholmes, K., 1995, Occurrence of active and inactive herbicide ingredients at selected sites in Iowa: Water, Air, and Soil Pollution, v. 83, no. 21-35.
1994	Barnes, K.K., and Eash, D.A., 1994, Flood of June 17, 1990, in the Clear Creek Basin, east-central Iowa: USGS OFR 94-78.
1994	Buchmiller, R.C., 1994, A summary of water-resources activities of the USGS in Iowa, fiscal year 1994: USGS OFR 94-88.
1994	Buchmiller, R.C., 1994, Ground water and the floods of 1993: Water Well Journal, v. 48, no. 4. p. 39-40.
1994	Eash, D.A., 1994, A geographic information system procedure to quantify drainage-basin characteristics: Water Resources Bulletin, American Water Resources Association, v. 30, no. 1.
1994	Fischer, E.E., 1994, Contraction scour at a bridge over the Iowa River, in Proceedings, Hydraulic Engineering `94, August 1-5, 1994, Buffalo, NY,: New York, NY, American Society of Civil Engineers.
1994	Kalkhoff, S.J., 1994, National Water-Quality Assessment Program - eastern Iowa basins: NAWQA Fact Sheet 94-031.
1994	Kalkhoff, S.J., and Eash, D.A., 1994, Suspended sediment and stream discharge in Bloody Run and Sny Magill watershed, water year 1992, in Seigley, L.S., ed., Sny Magill water shed monitoring project, baseline data: Iowa Department of Natural Resources, Geo logical Survey Bureau Technical Information Series 32.
1994	Kalkhoff, S.J., and Kuzinar, R.L., 1994, Hydrologic data for the Big Spring Basin, Clayton County, Iowa water water Year 1991: USGS OFR 94-56.
1994	Kolpin, D.W., Burkart, M.R., and Thurman, E.M., 1994, Herbicides and nitrate in near-surface aquifers in the midcontinental United States, 1991: USGS WSP 2413.
1994	Schaap, B.D., and Lucey, K.J., 1994, Selected nutrients in stormwater runoff from Davenport, Iowa, 1992: USGS WRIR 94-4130.
1994	Southard, R.E., Sneck-Fahrer, D., Anderson, C.J., Goodrich, R.D., and Gorman, J.G., 1994, Water resources data Iowa, water year 1993: USGS WDR IA-93-1.
1994	Thomas, W.O., Jr., and Eash, D.A., 1994, Frequency of the 1993 flood in the upper Mississippi River Basin,in Proceedings, Hydraulic Engineering `94, August 1-5, Buffalo, NY: New York, NY, American Society of Civil Engineers.
1993	Burkart, M.R., and Kolpin, D.W., 1993, Hydrologic and land-use factors associated with herbicides and nitrate in near-surface aquifers: Journal of Environmental Quality, v. 22.
1993	Burkart, M.R., and Kolpin, D.W., 1993, Application of a geographic information system in analyzing the occurrence of atrazine in groundwater of the mid-continental United States, in Kovar, K., and Nachtnebel, H.P., eds., Proceedings, Applications of Geographic Information Systems in Hydrology and Water Resources, Vienna, Austria, April 19-22, 1993: The Netherlands, International Association of Hydrological Sciences Publication No. 211.
1993	Burkart, M.R., and Kolpin, D.W., 1993, Regional assessment of factors related to herbicides and nitrate in near-surface aquifers of the midcontinent, in Proceedings, Agricultural Research to Protect Water Quality, Minneapolis, MN, February 21-24, 1993: Ankeny, Iowa, Soil and Water Conservation Society.
1993	Burkhart, M.R. , Kolpin, D.W., and Thurman, M., 1993, Hydrogeologic, water-quality, and land-use data for the reconnaissance of herbicides and nitrate in near-surface aquifers of the midcontinental United States, 1991: USGS OFR 93-114.
1993	Clark, M.L., 1993, Iowa stream water quality, with a section on Water-quality management by J.R. Olson, in National water summary 1990-91 - hydrologic events and stream water quality: USGS WSP 2400.
1993	Eash D.A., 1993, A geographic information system procedure to quantify physical basin characteristics,in Harlin, J.M., and Lanfear, K.J., eds., Proceedings of the Symposium on Geographic Information Systems and Water Resources: American Water Resources Association Technical Publication Series TPS-93-1.
1993	Eash, D.A., 1993, Estimating design-flood discharges for streams in Iowa using drainage--basin and channel--geometry characteristics: USGS WRIR 93-4062.
1993	Fischer, E.E., 1993, Scour at a bridge over the Weldon River, Iowa, in Conference on Hydraulic Engineering 1993, San Francisco, California, Proceedings: New York, New York, American Society of Civil Engineers.
1993	Goolsby, D.A., Battaglin, W.A., Fallon, J.D., Aga, D.S., Kolpin, D.W., and Thurman, E.M., 1993, Persistence of herbicides in selected reservoirs in the midwestern United States: some preliminary results, in Selected papers in agricultural chemicals in water resources of the midcontinental United States: USGS OFR 93-418.
1993	Kalkhoff, S.J., 1993, Using a Geographic Information System to determine the relation between stream quality and geology in the Roberts Creek watershed, Clayton County, Iowa: Water Resources Bulletin, v. 29, no. 6.
1993	Kalkhoff, S.J., 1993, Water quality of Corydon Reservoir before implementation of agricultural best-managment practices in the basin, Wayne County, Iowa, September 1990-September 1991: USGS WRIR 93-4099.
1993	Kolpin, D.W., Burkart, M.R., and Thurman, E.M., 1993, Hydrogeologic, water-quality, and land-use data for the reconnaissance of herbicides and nitrate in near-surface aquifers of the midcontinental United States: USGS OFR 93-114.
1993	Kolpin, D.W., Goolsby, D.A., Aga, D.A., Iverson, J.L., and Thurman, E.M., 1993, Pesticides in near-surface aquifers: results of the midcontinental United States ground-water reconnaissance, 1991-92, in Selected papers on agricultural chemicals in water re sources of the midcontinental United States: USGS OFR 93-418.
1993	Kolpin, D.W., and Kalkhoff, S.J., 1993, Atrazine degradation in a small stream in Iowa: Journal of Environmental Science and Technology, v. 27, no. 1.
1993	Parrett, C., Melcher, N.B., and James, R.W., 1993, Flood discharges in the upper Mississippi River basin: U.S. Geological Survey Circular 1120-A.
1993	Squillace, P.J., Liszewski, M.J., and Thurman, E.M., 1993, Agricultural chemical interchange between ground water and surface water, Cedar River basin, Iowa and Minnesota - a study description: USGS OFR 92-85, 26 p.
1993	Squillace, P.J, Thurman, E.M. and Furlong, E.T., 1993, Groundwater as a nonpoint source of atrazine and deethylatrazine in a river during base flow conditions: Water Resources Research, vol. 29, no. 6, pp. 1719-1729.
1992	Baebenroth, R.W., and Schaap, B.D., 1992, Floods of 1986 and 1990 in the Raccoon River Basin, west-central Iowa: USGS OFR 92-94.
1992	Bowman, P. R., 1992, Hydrologic data for a study of a pre-Illinoian glacial till in Linn County, Iowa, water year 1991: USGS OFR 92-500.
1992	Gorman, J.G., Anderson, C.J., Lambert, R.B., Sneck-Fahrer, D., and Wang, W., 1992, Water resources data Iowa, water year 1992: USGS WDR IA-92-1.
1992	Hansen, R.E., 1992, Bedrock topography of southwest Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-2230, scale 1:250,000.
1992	Hansen, R.E., Thompson, C.A., VanDorpe, P.E., 1992, Availability and quality of water from the alluvial, glacial drift, and Dakota aquifers and water use in southwest Iowa: USGS WRIR 91-4156.
1992	Kalkhoff, S.J., Cherryholmes, K.L., Detroy, M.G., and Kuzniar, R.L, 1992, Herbicide and nitrate variation in alluvium underlying a cornfield at a site in Iowa County, Iowa: Water Resource Bulletin, v. 28, no. 6, p. 1001-1011.
1992	Kalkhoff, S.J., Kuzniar, R.L., Kolpin, D.W., and Harvey, C.A., 1992, Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1990: USGS OFR 92-67.
1992	Karsten, R.A., 1992, A summary of water-resources activities of the USGS in Iowa, fiscal year 1992: USGS OFR 92-154.
1992	Kolpin, D.W., and Kalkhoff, S.J., 1992, Time of travel and dispersion in a selected reach of Roberts Creek, Clayton County, Iowa: USGS WRIR 91-4145.
1992	Lambert, R.B., 1992, The ground-water-level monitoring network in Iowa: USGS OFR 92-27.
1992	Matthes, Wilbur J., Jr., Sholar, C.J., and George, J.R., 1992, Quality-assurance plan for the analysis of fluvial sediment by laboratories of the USGS: USGS OFR 91-467.
1992	Melcher, N.B., and Walker, J.F., 1992, Evaluation of selected methods for determining steamflow during periods of ice effect: USGS WSP 2378.
1992	Soenksen, P.J., Hatfield, J.L., and Baker, J.L., 1992, Management systems evaluation area: Iowa - Walnut Creek watershed: USGS OFR 92-167.
1992	Squillace, P.J., and Thurman, E.M., 1992, Herbicide transport in rivers: Importance of hydrology and geochemistry in nonpoint-source contamination: Journal of Environmental Science and Technology, vol. 26, no. 3, pp. 538-545.
1992	Thurman, E.M., Goolsby, D.A., Meyer, M.T., Mills, M.S., Pomes, M.L., and Kolpin, D.W., 1992, A reconnaissance study of herbicides and their metabolites in surface water of the midwestern United States using immunoassay and gas chromatography/mass spectrometry: Environmental Science and Technology, v. 26, no. 12.
1991	Bowman, P.R., 1991, Hydrologic data for a study of pre-Illinoian glacial till in Linn County, Iowa, water year 1990: USGS OFR 91-459.
1991	Eash, D.A., and Heinitz, A.J., 1991, Floods in the Nishnabotna River basin, Iowa: USGS OFR 91-171.
1991	Goolsby, D.A., Thurman, E.M., and Kolpin, D.W., 1991, Geographic and seasonal distribution of herbicides in streams of the midwestern United States, in Proceedings, Irrigation and Drainage Engineering Conference, Honolulu, Hawaii, July 23-27, 1991: New York, New York, American Society of Civil Engineers.
1991	Goolsby, D.A., Thurman, E.M., and Kolpin, D.W., 1991, Geographic and temporal distribution of herbicides in surface waters of the upper midwestern United States, 1989-1990, in Mallard, G.E., and Aronson, E.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: USGS WRIR 91-4034.
1991	Kalkhoff, S.J., and Kuzniar, R.L., 1991, Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1989: USGS OFR 91-63.
1991	Kolpin, D.W., and Burkart, M.R., 1991, Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991: USGS OFR 91-59.
1991	Lucey, K.J., 1991, Analysis of the ground-water flow system, geochemistry and underseepage in the vicinity of the Red Rock Dam near Pella, Iowa: USGS WRIR 91-4092.
1991	Majure, J.J., and Eash, D.A., 1991, An automated method to quantify physical basin characteristics, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: USGS WRIR 91-4034.
1991	O'Connell, D.J., Lambert, R.B., Matthes, W.J., and Sneck-Fahrer, D., 1991, Water resources data Iowa, water year 1991: USGS WDR IA-91-1.
1991	Soenksen, P.J., and Eash, D.A., 1991, Iowa floods and droughts, in National Water Summary 1988-89 - Hydrologic events and floods and droughts: USGS WSP 2375.
1991	Squillace, P.J., Thurman, E.M., Fischer, E.E., and Soenksen, P.J., 1991, Source of atrazine, desethylatrazine, metolachlor in a selected reach of the Cedar River, Iowa, during base-flow conditions, in Mallard, G.E., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program-Proceedings of the technical meeting, Monterey, California, March 11-15, 1991: USGS WRIR 91-4034.
1991	Thurman, E.M., Goolsby, D.A., Meyer, M., and Kolpin, D.W., 1991, Herbicides in surface waters of the midwestern United States: effects of the spring flush: Environmental Science and Technology, v. 25, no. 10.
1990	Fischer, E.E., Melcher, N.B., and Kluesner, S.P., 1990, Statistical summaries of selected Iowa streamflow data through September 30, 1988: USGS OFR 90-170.
1990	Karsten, R.A., 1990, A summary of water-resources activities of the U.S. Geological Survey, Iowa, fiscal year 1990: USGS OFR 90-583.
1990	Melcher, N.B., and Walker, J.F., 1990, Evaluation of selected methods for determining streamflow during periods of ice effect: USGS OFR 90-554.
1990	O'Connell, D.J., Liszewski, M.J., Lambert, R.B., and Matthes, W.J., 1990, Water resources data Iowa, water year 1990: USGS WDR IA-90-1.
1990	Soenksen, P.J., 1990, Automatic tracer-dilution methods used for stage-discharge ratings of streamflow hydrographs on small Iowa streams: USGS WRIR 89-4187.
1990	Thamke, J.N., 1990, Iowa water supply and use, in National Water Summary 1987 - Hydrologic events and water supply and use: USGS WSP 2350.
1990	Burkart, M.R., and Buchmiller, R.C., 1990, Regional evaluation of hydrologic factors and effects of pumping, St. Peter-Jordan Aquifer, Iowa: USGS WRIR 90-4009.
1990	Detroy, M.G., Clark, M.L., Holub, M.A., and Hunt, P.K., 1990, Water quality of alluvial aquifers, Carroll and Guthrie Counties: USGS WRIR 89-4186, 52 p.
1989	Horick, P.J., 1989, Water resources of northeast Iowa, with a section on Surface-water resources by Phillip J. Soenksen: Iowa Department of Natural Resources Water Atlas Number 8.
1989	Kalkhoff, S.J., 1989, Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1988: USGS OFR 89-230.
1989	Kalkhoff, S.J., 1989, Contamination of ground and surface water by agricultural chemicals, Big Spring basin, Clayton County, Iowa: (Abs.) in U.S. Geological Survey second national symposium on water quality: abstracts of the technical sessions, Orlando, Florida, November 12-17, 1989: USGS OFR 89-409.
1989	Melcher, N.B., Detroy, M.G., Karsten, R.A., and Matthes, W.J., 1989, Water resources data Iowa, water year 1988: USGS WDR IA-88-1.
1989	O'Connell, D.J., Liszewski, M.J., Lambert, R.B., and Matthes, W.J., 1989, Water resources data Iowa, water year 1989: USGS WDR IA-89-1.
1988	Buchmiller, R.C., 1988, A strategy for collecting ground-water data and developing a ground-water model of the Missouri River alluvial aquifer, Woodbury and Monona Counties, Iowa: USGS OFR 87-452.
1988	Buchmiller, R.C., 1988, U.S. Geological Survey ground-water studies in Iowa: USGS OFR 88-146.
1988	Buchmiller, R.C., 1988, Use of gas chromatograph/flame ionization detector to identify organic substances in ground water: USGS OFR 86-481.
1988	Buchmiller, R.C., and Squillace P.J., 1988, Iowa ground-water quality, with a section on Ground-water-quality management, by R.D. Drustrup, in National Water Summary 1986 - Hydrologic events and ground-water quality: USGS WSP 2325, p. 251-258.
1988	Clark, M.L., and Thamke, J.N., 1988, Estimated water use in Iowa, 1985: USGS OFR 87-704.
1988	Detroy, M.G., Hunt, P.K., and Holub, M.A., 1988, Ground-water-quality-monitoring program in Iowa: nitrate and pesticides in shallow aquifers: USGS WRIR 88-4123.
1988	Detroy, M.G., and Kuzniar, R.L., 1988, Occurrence and distribution of nitrate and herbicides in the Iowa River alluvial aquifer, Iowa, May 1984 to November 1985: USGS WRIR 88-4117.
1988	Melcher, N.B., Baebenroth, R.W., Detroy, M.G., Karsten, R.A., and Matthes, W.J., 1988, Water resources data Iowa, water year 1987: USGS WDR IA-87-1.
1988	Squillace, P.J., and Engberg, R.A., 1988, Surface-water quality of the Cedar River Basin, Iowa-Minnesota, with emphasis on the occurrence and transport of herbicides, May 1984-November 1985: USGS WRIR 88-4060, 81 p.
1987	Buchmiller, R.C., and Squillace, P.J., 1987, Iowa ground-water quality: USGS OFR 87-0725, 9 p.
1987	Heinitz, A.J., 1987, Discharge ratings for control gates at Mississippi River lock and dam 18, Gladstone, Illinois: USGS WRIR 87-4110.
1987	Heinitz, A.J., 1987, Discharge ratings for control gates at Mississippi River lock and dam 17, New Boston, Illinois: USGS WRIR 87-4165.
1987	Karsten, R.A., and Waite, P.J., 1987, Water year 1986 in Iowa: precipitation and water resources: USGS OFR 87-681.
1987	Lara, O.G., 1987, Methods for estimating the magnitude and frequency of floods at ungaged sites on unregulated rural streams in Iowa: USGS WRIR 87-4132.
1987	Lara, O.J., and Eash, D.A., 1987, Floods in Iowa: stage and discharge: USGS OFR 87-382.
1987	Melcher, N.B., Detroy, M.G., Matthes, W.J., and Karsten, R.A., 1987, Water resources data Iowa, water year 1986: USGS WDR IA-86-1.
1986	Buchmiller, R.C., 1986, Iowa joins in monitoring acid rain: Iowa Conservationist, v. 45, no. 9.
1986	Hansen, R.E., 1986, Bedrock topography of northwest Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-1726, 2 sheets, scale 1:125,000.
1986	Hansen, R.E., and Runkle, D.L., 1986, Bedrock topography of west-central Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-1688, 2 sheets, scale 1:125,000.
1986	Heinitz, A.J., 1986, Floods in south-central Iowa: USGS OFR 85-100.
1986	Heinitz, A.J., 1986, Floods of June-July, 1982, in Iowa: USGS OFR 85-151.
1986	Heinitz, A.J., 1986, Floods in the Floyd River basin, Iowa: USGS OFR 86-476.
1986	Heinitz, A.J., 1986, Discharge ratings for control gates at Mississippi River Lock and Dam 11, Dubuque, Iowa,: USGS WRIR 85-4105.
1986	Heinitz, A.J., 1986, Discharge ratings for control gates at Mississippi River Lock and Dam 13, Fulton, Illinois: USGS WRIR 86-4134.
1986	Heinitz, A.J., 1986, Discharge ratings for control gates at Mississippi River Lock and Dam 12, Bellevue, Iowa: USGS WRIR 86-4135.
1986	Heinitz, A.J., 1986, Discharge ratings for control gates at Mississippi River Lock and Dam 22, Saverton, Missouri: USGS WRIR 86-4137.
1986	Heinitz, A.J., 1986, Discharge ratings for control gates at Mississippi River Lock and Dam 21, Quincy, Illinois: USGS WRIR 87-4155.
1986	Melcher, N.B., Detroy, M.G., Matthes, W.J., and Hansen, R.E., 1986, Water resources data Iowa, water year 1985: USGS WDR IA-85-1.
1986	Lara, O.G., and Soenksen, P.J., 1986, Iowa surface-water resources, in National Water Summary 1985 - Hydrologic events and surface-water resources: USGS WSP 2300.
1986	Runkle, D.L., 1986, Hydrology of the alluvial, buried channel, basal Pleistocene, and Dakota aquifers in west-central Iowa: USGS WRIR 4239.
1986	Wahl, K., and Bunker, B.J., 1986, Hydrology of carbonate aquifers in southwestern Linn County and adjacent parts of Benton, Iowa, and Johnson Counties, Iowa: Iowa Geological Survey Water-Supply Bulletin No. 15.
1985	Buchmiller, R., Gaillot, G., and Soenksen, P.J., 1985, Water resources of north-central Iowa: Iowa Geological Survey Water Atlas Number 7.
1985	Detroy, M.G., 1985, Iowa ground-water-quality monitoring program: USGS OFR 84-815, 34 p.
1985	Hansen, R.E., 1985, Bedrock topography of central Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-1609, 2 sheets, scale 1:125,000.
1985	Heinitz, A.J., 1985, Discharge ratings for control gates at Mississippi River Lock and Dam 14, LeClaire, Iowa: USGS WRIR 85-4261.
1985	Hunt, P., and Runkle, D., 1985, Ground-water data for the alluvial, buried channel, basal pleistocene and Dakota aquifer in west-central Iowa: USGS OFR 84-819.
1985	Karsten, R.A., ed., 1985, Iowa: a summary of water-resources activities of the United States Department of the Interior Geological Survey: U.S. Geological Survey (unnumbered series).
1985	Karsten, R.A., and Burkart, M.R., 1985, Iowa ground-water resources in National Water Summary 1984 - hydrologic events, selected water-quality trends, and ground-water resources: USGS WSP 2275.
1984	Miller, V.E., Matthes, W.J., Detroy, M.G., and Hansen, R.E., 1985, Water resources data Iowa, water year 1984: USGS WDR IA-84-1
1984	Runkle, D.L., Newman J.L., Shields, E.M., 1985, Permitted water use in Iowa, 1985: USGS OFR 86-302.
1984	Burkart, M.R., 1984, Availability and quality of water from the Dakota aquifer, northwest Iowa: USGS WSP 2215.
1984	Burmeister, I.L., and Lara, O.G., 1984, Cost-effectiveness of the stream-gaging program in Iowa: USGS WRIR 84-4171.
1983	Burmeister, I.L., Spiers, V.L., Soenksen, P.J., and Matthes, W.J., 1984 Water resources data Iowa, water year 1983: USGS WDR IA-83-1.
1983	Buchmiller, R.C., and Karsten, R.A., 1983, Estimated water use in Iowa, 1980: Iowa Geological Survey Miscellaneous Map Series 9.
1983	Burmeister, I.L., Spiers, V.L., Soenksen, P.J., and Matthes, W.J., 1983, Water resources data Iowa, water year 1982: USGS WDR IA-82-1.
1983	Detroy, M.G., Skelton, J., and others, 1983, Hydrology of area 38, western region, interior coal province, Iowa and Missouri: USGS OFR 82-1014.
1982	U.S. Geological Survey, 1982, Water resources data Iowa, water year 1981: USGS WDR IA-81-1.
1981	Heinitz, A.J., and Riddle, D.E., 1981, Floods in the English River Basin, Iowa: USGS OFR, 81-67.
1981	U.S. Geological Survey, 1981, Water resources data for Iowa, water year 1980: USGS WDR IA-80-1.
1981	U.S. Geological Survey, 1981, Surface water quality, Twin Ponies watershed, Pottawattamie and Mills Counties, Iowa: USGS OFR 81-679.
1980	Gordon, D.L., 1980, Ground water resources of Lee County: USGS OFR 80-56.
1980	Heinitz, A.J., 1980, Floods in the Raccoon River Basin, Iowa: USGS OFR 80-162.
1980	Logel, J.D., 1980, Iowa observation well network: past, present, and future: USGS OFR 80-755.
1980	Sendlein, L.V.A., and Gilmore, J.L., 1980, Bedrock topography of southwest Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-1222, scale 1:125,000.
1980	U.S. Geological Survey, 1980, Water resources data for Iowa, water year 1979: USGS WDR IA-79-1.
1980	U.S. Geological Survey, 1980, Water quality of Indian Creek, Van Buren watershed, Iowa and Missouri: USGS OFR 80-677.
1958	Schwob, H.H., 1958, Low-flow characteristics of Iowa streams, Iowa Natural Resources Council Bulletin No. 9.
1979	Gockel, D.J., 1979, Selected geologic information from drill holes in southeastern Iowa: USGS OFR 79-415.
1979	Heinitz, A.J., 1979, Supplement to floods in the Upper Des Moines River Basin, Iowa: USGS OFR 79-1486.
1979	Slack, L.J., 1979, Baseline water quality of Iowa's coal region: USGS OFR 79-980, 74 p.
1979	U.S. Geological Survey, 1979, Water quality of Three Mile Creek, Badger Creek, and Little River Watershed, Iowa: USGS OFR 79-1254.
1979	U.S. Geological Survey, 1979, Water resources data for Iowa, water year 1978: USGS WDR IA-78-1.
1978	Cagel, J.W., and Heinitz, A.J., 1978, Water resources of south-central Iowa: Iowa Geological Survey Water Atlas Number 5.
1978	Hansen, R.E., 1978, Bedrock topography of North-Central Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-1080, scale 1:125,000.
1978	Heinitz, A.J., and Wiitala, S.W., 1978, Floods in the Skunk River Basin, Iowa: USGS OFR 79-272.
1978	Horick, P.J., and Steinhilber, W.L., 1978, Jordan aquifer of Iowa: Iowa Geological Survey Miscellaneous Map Series 6.
1978	Lara, O.G., 1978, Effects of urban development on the flood-flow characteristics of the Walnut Creek Basin, Des Moines Metropolitan Area, Iowa: USGS WRIR 78-11.
1978	Wahl, K.D., Ludvigson, G.A., Ryan, G.L., and Steinkampf, W.C., 1978, Water resources of east-central Iowa: Iowa Geological Survey Water Atlas Number 6.
1978	U.S. Geological Survey, 1978, Water resources data for Iowa, water year 1977: USGS WDR IA-77-1.
1977	Hansen, R.E., and Steinhilber, W.L., 1977, Geohydrology of Muscatine Island, Muscatine County, Iowa: Iowa Geological Survey Water-Supply Bulletin No. 11.
1977	Heinitz, A.J., 1977, Floods in the Big Creek Basin, Linn County, Iowa: USGS OFR 77-209. Sponsored cooperatively by Linn County, Iowa.
1977	U.S. Geological Survey, 1977, Water resources data for Iowa, water year 1976: USGS WDR IA-76-1.
1976	U.S. Geological Survey, 1976, Water resources data for Iowa, water year 1975: USGS WDR IA-75-1.
1975	Lara, O.J., and Heinitz, A.J., 1976, Flood of June 27, 1975, in City of Ames, Iowa: USGS OFR 76-728.
1975	Hansen, R.E., 1975, Bedrock topography of northeast Iowa: U.S. Geological Survey Miscellaneous Investigations Series Map I-933, 2 sheets, scale 1:125,000.
1975	U.S. Geological Survey, 1975, Water resources data for Iowa, water year 1974: U.S. Geological Survey, untitled series.
1974	U.S. Geological Survey, 1974, Water resources data for Iowa, water year 1973: U.S. Geological Survey, untitled series.
1974	U.S. Geological Survey, 1974, Statistical summaries of Iowa streamflow data through September 30, 1971: USGS OFR (unnumbered).
1973	Cagle, J.W., 1973, Bedrock topography of South-Central Iowa: U.S. Geological Survey Miscellaneous Geological Investigations Map I-763, scale 1:125,000.
1973	Hansen, R.E., 1973, Bedrock topography of Southeast Iowa: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-808, 2 sheets, scale 1:125,000.
1973	Heinitz, A.J., 1973, Floods of August 2, 1972, in the Little Maquoketa River Basin, Dubuque County, Iowa: USGS OFR (unnumbered).
1973	Heinitz, A.J., 1973, Floods in the Rock River Basin, Iowa: USGS OFR (unnumbered).
1973	Heinitz, A.J., 1973, Floods in the Iowa River Basin upstream from Coralville Lake, Iowa: USGS OFR (unnumbered).
1973	Horick, P.J., and Steinhilber, W.L., 1973, Mississippian aquifer of Iowa: Iowa Geological Survey Miscellaneous Map Series 3, 3 sheets.
1973	U.S. Geological Survey, 1973, Water resources data for Iowa, water year 1972: U.S. Geological Survey, untitled series.
1972	U.S. Geological Survey, 1972, Water resources data for Iowa, water year 1971: U.S. Geological Survey, untitled series.
1971	Coble, R.W., and Roberts, J.V., 1971, The water resources of southeast Iowa: Iowa Geological Survey Water Atlas Number 4.
1971	Schwob, H.H., 1971, Floods in the Wapsipinicon River Basin, Iowa: USGS OFR (unnumbered).
1971	U.S. Geological Survey, 1971, Water resources data for Iowa, water year 1970: U.S. Geological Survey, untitled series.
1970	Burmeister, I.L., 1970, The streamflow data program: USGS OFR (unnumbered).
1970	Hansen, R.E., 1970, Geology and ground-water resources of Linn County, Iowa: Iowa Geological Survey Water-Supply Bulletin No. 10.
1970	Schwob, H.H., 1970, Floods in the upper Des Moines River Basin, Iowa: U.S. Geological Survey Open-File Report, 49 p.
1970	Schwob, H.H., 1970, Flood profile study, Morgan Creek, Linn County, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by the City of Cedar Rapids, Iowa.
1970	Schwob, H.H., 1970, Flood of March 3, 1970, on Old Mans Creek, Johnson County, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by the Iowa State Highway Commission.
1970	Schwob, H.H., 1970, Flood profile study, Hoosier Creek, Linn County, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by Linn County, Iowa.
1970	Schwob, H.H., 1970, Maximum floods in Iowa, in Water Resources of Iowa, a symposium sponsored by the Iowa Academy of Science 1969: Iowa City, Iowa, University Printing Services.
1970	Steinhilber, W.L., and Horick, P.J., 1970, Ground water resources of Iowa, in Water Resources of Iowa, a symposium sponsored by the Iowa Academy of Science 1969: Iowa City, Iowa, University Printing Services.
1970	U.S. Geological Survey, 1970, Water resources data for Iowa, water year 1969: U.S. Geological Survey, untitled series.
1970	Wiitala, W.W., 1970, Surface water resources of Iowa, in Water Resources of Iowa, a symposium sponsored by the Iowa Academy of Science 1969: Iowa City, Iowa, University Priting Services.
1969	U.S. Geological Survey, 1969, Water resources data for Iowa, water year 1968: U.S. Geological Survey, untitled series.
1968	Schwob, H.H., 1968, Flood of June 7, 1967, in the Wapsinonoc Creek Basin, Iowa: U.S. Geological Survey Open-File Report, 21 p.
1968	U.S. Geological Survey, 1968, Water resources data for Iowa, water year 1967: U.S. Geological Survey, untitled series.
1968	U.S. Geological Survey, 1968, Flood profile study, Squaw Creek, Linn County, Iowa: USGS OFR (unnumbered).
1967	Schwob, H.H., 1967, Floods on Otter Creek in Linn County, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by Linn County, Iowa.
1967	Carpenter, P.J., 1967, Floods in Rock River basin, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by the Iowa State Highway Commission.
1966	Carpenter, P.J., and Appel, D.H., 1966, Water-surface profiles of Raccoon River at Des Moines, Iowa: USGS OFR (unnumbered). Sponsored cooperatively by the Iowa Institute of Hydraulic Research and City of Des Moines.
1966	Saboe, C.W., 1966, Summer base-flow recession curves for Iowa streams: USGS OFR (unnumbered).
1966	Schwob, H.H., 1966, Little Sioux River Basin floods: USGS OFR (unnumbered).
1966	U.S. Geological Survey, 1966, Water resources data for Iowa 1966, Part 1--Surface water records: U.S. Geological Survey, untitled series.
1966	U.S. Geological Survey, 1966, Water resources data for Iowa 1966, Part 2--Water quality records: U.S. Geological Survey, untitled series.
1965	Schwob, H.H., and Meyers R.E., 1965, The Mississippi River flood in Iowa: Iowa City, USGS OFR (unnumbered). Sponsored cooperatively by the Iowa Geological Survey.
1965	Twenter, F.R., and Coble, R.W., 1965, The water story in central Iowa: Iowa Geological Survey Water Atlas Number 1.
1965	U.S. Geological Survey, 1965, Water resources data for Iowa 1965, Part 2--Water quality records: U.S. Geological Survey, untitled series.
1965	U.S. Geological Survey, 1965, Water resources data for Iowa 1965, Part 1--Surface water records: U.S. Geological Survey, untitled series.
1964	Schwob, H.H., 1964, Water resources of the English River, Old Man's Creek, and Clear Creek basins in Iowa: USGS OFR (unnumbered).
1964	U.S. Geological Survey, 1964, Water quality records in Iowa and Minnesota 1964: U.S. Geological Survey, untitled series.
1964	U.S. Geological Survey, 1964, Surface water records of Iowa 1964: U.S. Geological Survey, untitled series.
1963	Schwob, H.H., 1963, Cedar River basin floods: Ames, Iowa Department of Transportation, Iowa Highway Research Board Bulletin 27.
1963	U.S. Geological Survey, 1963, Surface water records of Iowa 1963: U.S. Geological Survey, untitled series.
1962	U.S. Geological Survey, 1962, Surface water records of Iowa 1962: U.S. Geological Survey, untitled series.
1961	U.S. Geological Survey, 1961, Surface water records of Iowa 1961: U.S. Geological Survey, untitled series.
1958	Schwob, H.H., 1958, Low-flow characteristics of Iowa streams, Iowa Natural Resources Council Bulletin No. 9