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William W. Simpkins

Observed names: Simpkins, William W, Simpkins, William W., W Simpkins, W. W. Simpkins, W.W. Simpkins, William Simpkins
OpenAlex ID: A5000223433
Design and placement of a multi-species riparian buffer strip system
1995 · R. C. Schultz, J. P. Collettil, et al. · Agroforestry Systems · 221
Riparian forest buffers in agroecosystems – lessons learned from the Bear Creek Watershed, central Iowa, USA
2004 · R.C. Schultz, T.M. Isenhart, et al. · Agroforestry Systems · 206
Water Quality in Walnut Creek Watershed: Nitrate‐Nitrogen in Soils, Subsurface Drainage Water, and Shallow Groundwater
1999 · C. A. Cambardella, T. B. Moorman, et al. · Journal of Environmental Quality · 193
Isotopic composition of precipitation in central Iowa
1995 · W.W. Simpkins · Journal of Hydrology · 80
Hydrogeology and redox geochemistry of CH4in a Late Wisconsinan Till and Loess Sequence in central Iowa
1993 · W. W. Simpkins, T. B. Parkin · Water Resources Research · 70
Groundwater flow, velocity, and age in a thick, fine-grained till unit in southeastern Wisconsin
1992 · W.W. Simpkins, K.R. Bradbury · Journal of Hydrology · 67
Riparian and Upland Buffer Practices
2009 · R.C. Schultz, T.M. Isenhart, et al. · ASSA, CSSA and SSSA · 62
Geology, Groundwater Flow, and Water Quality in the Walnut Creek Watershed
1999 · J. M. Eidem, W. W. Simpkins, et al. · Journal of Environmental Quality · 61
Riparian forest buffers in agroecosystems — lessons learned from the Bear Creek Watershed, central Iowa, USA
2004 · R. C. Schultz, T. M. Isenhart, et al. · Advances in agroforestry · 54
Occurrence of Total Dissolved Phosphorus in Unconsolidated Aquifers and Aquitards in Iowa1
2004 · Michael R. Burkart, William W. Simpkins, et al. · JAWRA Journal of the American Water Resources Association · 46
Hydrogeological constraints on riparian buffers for reduction of diffuse pollution: examples from the Bear Creek watershed in Iowa, USA
2002 · W.W. Simpkins, T.R. Wineland, et al. · Water Science & Technology · 42
Fracture‐Controlled Nitrate and Atrazine Transport in Four Iowa Till Units
2005 · Martin F. Helmke, William W. Simpkins, et al. · Journal of Environmental Quality · 32
A Multiscale Investigation of Ground Water Flow at Clear Lake, Iowa
2005 · William W. Simpkins · Ground Water · 29
Theme Overview: Agriculture and Water Quality in the Cornbelt: Overview of Issues and Approaches
2007 · Helmers, Matthew J., Isenhart, Thomas M., et al. · RePEc: Research Papers in Economics · 26
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Contemporary Groundwater Methane Production from Pleistocene Carbon
1995 · T. B. Parkin, W. W. Simpkins · Journal of Environmental Quality · 24
Simulating Conservative Tracers in Fractured Till under Realistic Timescales
2005 · M.F. Helmke, W.W. Simpkins, et al. · Ground Water · 22
Tributary Stream Infiltration as a Source of Herbicides in an Alluvial Aquifer
1999 · Michael R. Burkart, William W. Simpkins, et al. · Journal of Environmental Quality · 22
Hydrogeochemistry and Water Resources of the Triassic Lower Dockum Group in the Texas Panhandle and Eastern New Mexico
1986 · Bureau of Economic Geology, Alan R. Dutton, et al. · Report of investigations/Report of investigations - University of Texas at Austin. Bureau of Economic Geology · 21
Geology and geohydrology of the Palo Duro Basin, Texas Panhandle. Report on the progress of nuclear waste isolation feasibility studies, 1979
1980 · T Gustavson, M Presley, et al. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 17
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Potential Impact of Earthen Waste Storage Structures on Water Resources in Iowa1
2002 · William W. Simpkins, Michael R. Burkart, et al. · JAWRA Journal of the American Water Resources Association · 16
Isotopic evidence for paleohydrologic evolution of ground-water flow paths, southern Great Plains, United States
1989 · Alan R. Dutton, William W. Simpkins · Geology · 15
Estimation of the representative elementary volume of a fractured till: a field and groundwater modeling approach
2019 · Nathan L. Young, William W. Simpkins, et al. · Hydrogeology Journal · 14
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Experimental Determination of Effective Diffusion Parameters in the Matrix of Fractured Till
2004 · M. F. Helmke, W. W. Simpkins, et al. · Vadose Zone Journal · 14
Geomorphic Processes and Rates of Retreat Affecting the Caprock Escarpment, Texas Panhandle
1989 · Bureau of Economic Geology, Thomas Gustavson, et al. · Report of investigations/Report of investigations - University of Texas at Austin. Bureau of Economic Geology · 12
Evaluation of tillage and crop rotation effects on groundwater quality—Nashua project
1994 · R. S. Kanwar, Douglas L. Karlen, et al. · Iowa State University Digital Repository (Iowa State University) · 11
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Works count: 74
Citation count: 1,449
H-index: 18
I10-index: 26
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